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    By Jim from Durand, MI on October 7, 2013
    For a multi-cap chimney, would I need to measure the length, width, and height of flues?
    By Collin C. - NFI Master Hearth Professional on October 8, 2013

    Precisely. The outside dimensions of the flues, as well as their projection above the chimney wash would need to be known. Any offset from one flue to the other will also need to be noted.

    By Kathleen from Cincinnati, OH on September 17, 2015
    Can you tell us what type of chimney cap to look for for a 100 year old stone chimney? It has no clay pipe liner to attach a normal cap to?
    By Chris C. on September 17, 2015

    If the top of the stone chimney is somewhat flat, you could utilize an item such as our Multi-Flue Semi-Custom Gelco Chimney Cap - 8" High Mesh as these are available in many sizes to match almost any size chimney. It the leading edge of the chimney does not provide a flat or even surface, I would suggest having a layer of cement laid atop the stonework.

    By Patricia from Woodland Park, CO on March 9, 2016
    We live at 8300 ft altitude. Chimney sweep tells us a special type of chimney cap is recommended (one without a mesh screen)... what are your thoughts? We have a wood stove vented out an 8' tall chimney.
    By Will M. on March 9, 2016

    At an altitude of this height, I would trust his judgement. While I have not heard of this type of recommendation, the thinner air at this altitude will negatively impact draft and the mesh commonly used in chimney caps does cause a very minimal restriction to the flow of flue gases while exiting the termination.

    By Ray from OK on July 27, 2013
    How can I keep water from going down my chimney? What kind of chimney cap should I use?
    By Collin C. - NFI Master Hearth Professional on July 29, 2013

    Generally, the best way to stop this from happening is to use a chimney cap that is oversized to the chimney opening.

    By Debbie from Conyers, GA on February 10, 2016
    Do you have a chimney cap to fit a 15 3/4" x 15 3/4" flue?
    By Will M. on February 10, 2016

    Absolutely. If you have a flue tile extending from your crown, a product like the Gelco Stainless Steel 15 in. x 15 in. Base Single-Flue Chimney Cap will be an excellent choice.

    By Bob from NY on July 27, 2013
    Would getting a cap with damper help with my very old stone fireplace with a rusted out damper? The draw up is not good and smoke rolls back into the room.
    By Collin C. - NFI Master Hearth Professional on July 29, 2013

    Likely not. A poorly drafting fireplace is usually caused by one of the following problems:

    1. Chimney flue is poorly insulated (cold hearth syndrome).
    2. Chimney flue is too large for the opening.
    3. Chimney is too short.
    4. Obstruction near the chimney is interfering with drafting.
    5. Prevailing wind is overpowering natural draft.

    By Paul from Duxbury, MA on March 23, 2016
    How high above the top of the clay flue should the top of the chimney cap be and how much room should the cap from the flue be to provide clearance for installation? Does the cap come with flanged bottoms so the cap can be anchored to the mortar?
    By Chris C. on March 23, 2016

    I would recommend at least 5" from the top of the clay flue to the underside of the chimney cap's lid to ensure that the chimney will not be restricted during use. Caps such as our Multi-Flue Semi-Custom Gelco Chimney Cap - 8" High Mesh should be sized several inches beyond the length and width of the clay flue at a minimum to ensure that wind blown rain cannot enter the chimney. The multi flue caps due utilize a perforated flange mounted on piano hinges to the mesh screen which can be placed to the interior or exterior of the mesh screen. The flange may be mounted directly to the chimney crown with masonry anchors of your choice.

    By Phil from New Mexico on November 29, 2016
    I need a high wind chimney cap for a pellet stove chimney.

    By Mal from La Habra, CA on March 11, 2015
    I am looking for a chimney cap for a house in California. What would you recommend for my dimensions?
    By eFireplaceStore on March 12, 2015

    We do indeed carry custom caps that can be made to fit your application. The link to the cap style I recommend is the Multi-Flue Semi-Custom Gelco Chimney Cap - 8" High Mesh. From here, you can select the width and length needed, as well as the California 5/8 mesh required for your state. The caps can bolt directly to the concrete wash of each chimney.

    By David from MA on July 28, 2015
    I have a wood stove with a double wall flue pipe. I need a chimney cap that prevents birds from getting in as we have had a couple of nests in there this summer. The current rain cap I have does not have mesh to prevent the birds from getting in. The pipe has an inside diameter of 8 inches and an outside diameter of 9.25 inches. What chimney cap would you recommend for me?
    By Will M. on July 28, 2015

    By Chris from McMinnville, TN on November 5, 2016
    What size cap do I need for a CPF-2465569, 6" ID pipe?

    By Michele from Clyde, NC on March 1, 2017
    I am looking for "knock down" or "unassembled" single flue caps. All I'm seeing is multi-flue. Do you have any suggestions?
    By Brennan W. on March 1, 2017

    The multi-flue caps are shipped knock down.

    By Charlie from San Jose on November 19, 2016
    I'd like to use a cap that goes around the brick. Dimensions: 15 1/2" x 27 1/2". Do you have a cap to fit that size?

    By Jean from Lynchburg, VA on October 31, 2014
    We need to replace an inside mount chimney cap. The inside dimensions of the flue are 10 3/4" X 15". The chimney flue is flush with the top of the chimney and our current cap is held in place by a flange that goes around the base of the cap. What would you suggest?

    By eFireplaceStore on November 3, 2014

    Based on your description, a product such as the Gelco Stainless Steel 12 in. x 16 in. Base Single-Flue Chimney Cap should work well for you. The outside perimeter flange is normally designed to fit around the chimney flue but the cap can be equipped with the Gelco Stainless Steel Flue Gripper Leg Set for an inside fit application.

    By Doug from Richardson, TX on December 5, 2016
    I need a 24" X 36" cap, with tabs to mount to the brick sailors.
    By Will M. on December 6, 2016

    The Multi-Flue Semi-Custom Gelco Chimney Cap - 8" High Mesh has 3/4" reversible swing tabs at the base to allow for inside or outside mounting and 24" x 36" may be selected via the drop-down menu on the item page. If this is not what you are needing, please provide further details so that we may look into other options.

    By David from New Jersey on February 18, 2014
    What cap do you recommend for 5" Asbestos (transient) B vent exhaust pipe?
    By Collin C. - NFI Master Hearth Professional on February 18, 2014

    A universal cap that we offer that will fit most brands of B vent piping is the Metal-Fab Type B Round Universal Chimney Vent Cap - For 5 Inch Chimney Systems. This friction fit louvered cap can be pushed into a B vent chimney system and secured with self tapping screws.

    By Ann Bekaert from Holly, MI on December 4, 2012
    Is there such a thing as a cap extension? Our two crocks are jammed together. We have a cap over them but need it raised higher.
    By Collin C. - NFI Master Hearth Professional on December 4, 2012

    We do offer individual flue extenders, such as the Gelco Stainless Steel 8 in. x 13 in. Base 1 Foot Flue Stretcher. These caps are available in various sizes, so it is possible we may have one to suit your needs.

    By Sandy from Pebble Beach, CA on April 2, 2013
    I need to replace the chimney cap on my Majestic fireplace. I'm looking for an S series cap. Do you have something I can use?
    By Tyler M. - NFI Certified Specialist on April 3, 2013

    If you are referring to the Type S triple-wall Majestic pipe that has an 8" inner diameter, 11" diameter second wall and a 13 3/8" outer diameter, please see the appropriate cap here:

    Round Louvered Termination for Majestic 8 in. Diameter Triple-Wall Flue Pipe

    By Alfred from Salem, NH on October 22, 2016
    I have a single flue chimney for a propane furnace where the flue does not go to the top. I am looking for a top mount cap with flanges on the outside for mounting to the top of the chimney. The size I need is 16" x 16" to the outside of the flange. I do not know how high the screen should be for a propane furnace as far as air flow or draft. I plan to blot it and caulk it to the top of the chimney. Can you suggest the right cap for this? Thank you.
    By eFireplaceStore on October 24, 2016

    Based on your description, the Gelco Stainless Steel 15 in. x 15 in. Base Single-Flue Chimney Cap would be a perfect match for your needs. The cap can be adjusted all the way to 16 1/2 inches on one side and 17 inches on the other. The cap has 8 inches of mesh height, which will work well for your needs.

    By Frank from Sterling Heights, MI on October 16, 2013
    My house was built in 1967. I have a natural wood fireplace with a single flue. We want to convert to natural gas with vented logs. We want to preserve as much heat as possible and not have it all go up the chimney. Can you give us some advice on how to do this?
    By Collin C. - NFI Master Hearth Professional on October 16, 2013

    Vented logs by nature give a great deal of their heat up to the chimney. The best way to preserve some heat is to regulate the damper assembly in the fireplace. If the cast iron damper is intact, it can be closed down far enough that the log set damper clamp is the only thing keeping it propped open. This will help to keep hot gases in the smoke chamber longer, increasing heat output.

    By Diane from Dallas, TX on April 3, 2017
    I have a chimney with outside dimensions of 64" x 27." Do you have anything to fit those dimensions?

    By Will M. on April 4, 2017

    While we will not have any stock caps that will mount on the outside of this chimney, most customers choose a product like our Multi-Flue Semi-Custom Gelco Chimney Cap - 8" High Mesh to install on the chimney crown surface in between the outer perimeter of the chimney crown and flue tile(s). We also have the ability to have caps custom-fabricated with the dimensions you prefer.

    By Lorri from Clarksville, GA on December 1, 2015
    I bought a house with just the opening in the chimney. I don't know what I'll need to put some type of cap on the top of it. I measure the outside of the top of the chimney and is 21" x 22". What would you recommend to cover this chimney?
    By Will M. on December 2, 2015

    If you are just looking for a cover to prevent rain and pests from getting in, the Multi-Flue Semi-Custom Gelco Chimney Cap - 8" High Mesh will attach to the flat surface of your chimney. You will need to select a screen size that will mount securely to the flat surface using the reversible 3/4" swing tabs.

    By Carl from Riverside, CA on December 28, 2015
    I have a Fireplace and every time that the wind blows from 5 mph to 50 mph I get a down draft and smoke in my house. This also happens when the forced air heater comes on. I have no cap on my chimney. What can I do to stop the smoke from entering my house?
    By Will M. on December 29, 2015

    Installing a cap will definitely help as this will create resistance to downdraft. In addition, it is always a good idea to install doors as this will further restrict downdraft to prevent backpuffing. Please note that diagnosing and correcting draft issues can prove to be difficult, especially when the hearth is on a perimeter and not an interior wall. When the fireplace and chimney is positioned in this fashion, a majority of the flue gases will be at or near outdoor temperatures, which can aggravate draft issues as cold air is more dense and will quite easily move into the home as replacement air. You have experienced this with your mechanical exhaust. As air leaves the home, air will be pulled from the easiest point of access, which will be your chimney, more often than not. Installing a cap and doors will restrict the home from pulling makeup air from the chimney.

    By Jerry from Boston on November 27, 2012
    I need a low cost 16 x 36 chimney cap. Can you please help me to find one?
    By Tyler M. - Fireplace Specialist on November 27, 2012

    We do not have a cap that is exactly the size you need. The closest we offer is this Gelco Model D 17 in. x 41 in. Base Stainless Steel Multi-Flue Chimney Cap.

    By Pete from MN on April 21, 2014
    I have a round clay tile flue(natural gas furnace) with an 8" inside diameter and an outside diameter of about 9.75 inches. Which cap(s) would work best for me?
    By Collin C. - NFI Master Hearth Professional on April 22, 2014

    Ideally, a cap such as the HomeSaver Pro 10 in. Diameter Base Black Steel Chimney Cap for Round Clay Flue Tiles would be used for your application. The cap uses adjustment screws that dig into the clay tile and hold the cap firmly in position.

    By Chris from Kodiak, AK on January 17, 2015
    Is the 10 inch Home Saver Guardian Chimney cap 10 inches inner diameter or outer diameter?
    By eFireplaceStore on January 19, 2015

    The listed diameter will be for the inner diameter of the pipe it is intended to fit.

    By Todd from Vacaville, CA on January 30, 2017
    I have a chimney that has an 8" x 20" oval flu, and 16" x 28" brick outer. I would like a chimney cap (with cover). What can you recommend?
    By Will M. on January 31, 2017

    Please provide the measurement of the flat portion of your concrete crown surface before the steep slope towards the outer brick chimney. Also, we will need to know how many inches the flue tile extends from this surface to determine the proper mesh height. As you are in California, any cap recommendation will incorporate 5/8" mesh.

    By Pete from Pittsburgh, PA on May 12, 2017
    I have a wood burning fireplace and when temperature warms up outside or it rains, smell comes through wood burner. Do you make a chimney cap that spins and stops the air being pulled down?
    By Will M. on May 15, 2017

    There would not really be a cap design that would correct this issue with any assurance as the problems you are describing are the result of negative pressure. In the warmer months when customers turn on their home's HVAC for cooling, the fireplace's chimney will tend to draw in outside air as the return vent will pull floor level air up through the home's ventilation and push cool air out of the cooling registers near the ceiling. Since the pressure is not equalized, the force of a motorized blower fan will easily pull air down through the chimney, so I would recommend cracking a window to see if this is still happening once makeup air is being pulled from another location. If not, I recommend making sure the damper is in the fully closed position. If it is, consider installing doors to additionally restrict the amount of air that can be pulled through the fireplace opening.

    To address the downdraft when it rains outside, these two things could be related to the subsequent wind that comes along with rain and the chimney not being tall enough to prevent downdraft. In order to correct this, please ensure the chimney is at least 3' above the roof and then an additional 2' over any obstruction measured within 10' horizontally from this point.

    By Ron Brushaber from CT on November 7, 2016
    Would you have a chimney cap that is 10 inch high, with 3/4 mesh; 36" by 24"

    By Daniel from Warner, NH on October 13, 2015
    I need a chimney cap to keep the downpour rains from entering my chimney. My chimney liner is 9x9 inches but does not extend above the chimney top's surface much. I have a cap on the other chimney that is screwed into the mortar that surrounds the liner and it works well. My chimney dimensions is 18x26 inches with a single flue. What cap would you recommend for me?
    By Will M. on October 13, 2015

    The Multi-Flue Semi-Custom Gelco Chimney Cap - 8" High Mesh matches this description. You will need to choose the appropriate dimensions for your crown via the drop-down menu.

    By John from Hot Springs, VA on October 22, 2015
    My flue liner is flush with the top of the chimney. Is there a flue cap that mounts from the inside? My flue liner measures 7" x 7".
    By Brennan W. on October 22, 2015

    For your installation, we would suggest the Gelco Stainless Steel 8 in. x 8 in. Base Single-Flue Chimney Cap utilizing the Gelco Stainless Steel Flue Gripper Leg Set to allow for mounting from the inside.

    By Joaanne from Littleton, CO on October 27, 2015
    The smoke from our chimney goes right into our neighbors yard and house (when they have a window open). Is there a chimney cap that can divert the flow of the smoke?
    By eFireplaceStore on October 27, 2015

    Unfortunately, no. Even if a cap has baffles on one side, there is still nothing to stop the flow of smoke once it has gotten away from the cap. I recommend considering a chimney extension to raise the level of the smoke exit above your neighbors home.

    By Shirley from Gouldbusk, TX on April 6, 2013
    We have a wood stove and rain comes down the chimney pipe when it rains at an angle. There's an 8 inch pipe inside of the larger pipe and I think the rain is coming in the space between the two pipes. Is there some sort of a cover or flange that will cover this gap? The outside pipe is approximately 44.5 inches in circumference, with a 14" diameter.
    By Collin C. - NFI Master Hearth Professional on April 8, 2013

    The closest item I have is a DuraTech All-Fuel Chimney Storm Collar - For Chimney Pipes with 5-Inch and 6-Inch Inner Diameters - 9359. This collar is designed to fit around 6 inch Duratech chimney pipes, which have an 8 inch outer diameter, as does your existing chimney. The collar is wide enough to cover up to a 14 inch width. You will need to seal the leading and trailing edges of the collar with high temperature silicone to keep water from leaking past it.

    By Jeff from ME on December 2, 2015
    I have a chimney that is 20 1/4" X 52 1/2" outside measurement. Do you have options for those dimensions with a 12 inch high screening?
    By Brennan W. on December 2, 2015

    For any application like yours, we would suggest the Multi-Flue Semi-Custom Gelco Chimney Cap - 12" High Mesh.

    By Luke from Fort Worth, TX on October 7, 2015
    I have a chimney that is currently covered by a piece of metal mesh and I am looking at putting a better solution on top of my chimney. The flue(exhaust) is 8" x 16 1/2". The outer measurements (to the actual brick) 30" x 47 1/2". Since the actual flue lining does not stick out of the top of the chimney I am not sure I can just put a cap on it as I have nothing but the mortar to screw, glue or nail it to, and I'm not sure that is possible or recommended. What would you suggest?
    By Chris C. on October 8, 2015

    In a situation such as this, I would suggest a top mount style chimney cap such as our Multi-Flue Semi-Custom Gelco Chimney Cap as you can specify the screen to screen dimensions to best suit your chimney. This type of cap utilizes tapcon style concrete anchors which are put through the perforated flange around the perimeter of the mesh screen. These anchors are then drilled into the chimney crown for a secure installation.

    By Jim from Greenwich, CT on July 14, 2013
    I get lousy draw in my fireplace when the cap is on. What is wrong?

    By Collin C. - NFI Master Hearth Professional on July 15, 2013

    It is quite likely that the draft of your fireplace is weak to begin with and the cap is simply enough to stifle what little draft there is. There are a couple of things that could cause this. 1. The chimney cap screen height is too short, placing the top of the cap too close to your chimney termination and impeding draft. 2. The chimney is too short and the house itself is fighting the chimney for draft. This often is characterized by smoke rolling back into the room.

    By Gary from Jackson, MO on January 8, 2014
    I have a customer with a 2 flue chiminey with a wood burning stove in the basement and a wood burning fire place on the main level. The brick chimney is about 30 feet tall total with both 9 x 13 liners extending about 8 inches above the brick. When he burns a fire in the main level fireplace it pulls smoke into the house from the wood burning stove in the basement. should I extend one flue higher than the other? Neither of them have a cap. Would this also help?
    By Collin C. - NFI Master Hearth Professional on January 9, 2014

    Extending the flue by means of a flue stretcher cap or section of manufactured chimney would indeed be the way to go. It is recommended to have at least 18 inches of difference in height for any chimney flues that are 24 inches or closer to one another. This is usually enough to prevent the drawback problem. If you use a flue stretcher, such as the Gelco Stainless Steel 8 in. x 13 in. Base 2 Foot Flue Stretcher, this will help to solve the issue. It is also recommended to cap the lower flue, as this will also help to disrupt the direct line of travel the smoke is taking from one flue to the other.

    By Bill Petranszky from Eastlake, OH on October 23, 2012
    I want to purchase and install a chimney cap but I currently have a round cap at the top of the chimney liner. This round cap does not cover the square chimney pipe. What should I do? By the way, my furnace no longer uses the chimney, just the hot water tank.
    By Collin C. - NFI Master Hearth Professional on October 23, 2012

    Do you happen to know how the liner is currently supported at the top of the chimney? If it uses a flat metal support plate, and the liner is clamped to the plate, you should be able to remove the current cap and storm collar, then cover the square clay flue tile with a larger cap.

    However, if the liner is the type that attaches to your current cap, then pulls down on the top plate, you will need to support the liner using alternate means. It is possible to use HVAC strapping to hold the liner in position, then attach another cap.

    By Tim from Cloquet, MN on March 22, 2013
    When it rains, water seeps down and through the mortar between the blocks. Can I do anything to prevent this? Is getting a chimney cap my best option?
    By Tyler M. - NFI Certified Specialist on March 22, 2013

    We offer the CrownSeal Pre-Mixed Flexible Waterproof Coating - 2 Gallon Tub as a great option for waterproofing chimney crowns, chimney corbels, and other masonry surfaces.

    By Stephen from Cumberland, MD on October 22, 2014
    I need a single flue chimney cap with legs or brackets that is 17 inches by 17 inches. What options do you offer?
    By eFireplaceStore on October 22, 2014

    A popular galvanized cap in this size is the Gelco 17 in. x 17 in. Base Black Galvanized Steel Single-Flue Chimney Cap. A stainless version in the same design is the Gelco Stainless Steel 17 in. x 17 in. Base Single-Flue Chimney Cap. Both items use set screws to mount to the chimney flue tiles, but mounting legs and gripper legs are available and listed in the "accessories" tab for both caps.

    By Glenn from Phoenix, AZ on November 23, 2015
    Looking for some assistance with a Cap selection. As you may see the oval chimney liner was capped with concrete. The internal measurements are 10 6/8" by 13 3/8". This is surrounded with a 2 1/2" border. I realize that the cap can be mounted a number of ways - screw via cap brackets, slide in via legs and adhesive. What size of chimney cap should I get? What is the mounting Method? Should I use SS or Anodized Paint?
    By Will M. on November 24, 2015

    It appears as though there is a ledge around the perimeter of this chimney and this would be an ideal location to install a surface mount cap as any other option would do little to prevent rain intrusion. I am unsure of how tall that illustrated portion extends from this flat ledge, but a Multi-Flue Semi-Custom Gelco Chimney Cap could be installed on this surface, so long as a mesh height is chosen that is at least 5" taller than the tallest portion of that elevated portion in the attached picture.

    By Bob from Wilmington, DE on July 15, 2013
    I have an air insulated class A chimney pipe that needs a new cap. The current one seems to allow water into the stove. How should I measure the size cap required? Is it the inside diameter of the current pipe?
    By Tyler M. - NFI Certified Specialist on July 16, 2013

    Yes, please measure the inside diameter of your pipe. Being able to identify the manufacturer/model information of the pipe will also be helpful, if you want a factory replacement.

    By Clarence from Stuart, VA on July 1, 2015
    How far above the top of the flu do these chimney cap covers need to be?
    By Will M. on July 2, 2015

    When selecting a chimney cap, you will need to ensure the mesh height or lid will be at least 5" taller than the highest flue tile that extends from your crown. Typically, the terracotta flue should extend 2" above the crown, splay or wash, however, the flue tile can sometimes be level with this surface or extend much higher than 2". We have caps on our site that can accommodate this issue and we also have a custom fabrication department that can make a cap to your needs, with the proper information provided.

    By Mark from Cary, NC on October 17, 2016
    I have just installed vent-free natural gas fireplace logs. I will not be using the fireplace anymore for "normal" wood burning fires. The inside damper will remain closed. Should I completely close off the chimney or install a vented cap? If a cap is recommended, how high of a cap would you recommend?
    By Will M. on October 18, 2016

    When installing a ventless log set, you should always follow the manufacturer's instructions included with that log set, however, only the damper should be closed, as a wood burning fireplace must remain fully functional when installing a ventless gas log set. You should not seal the chimney in any other fashion.

    By Lance from Lewisville, TX on July 24, 2017
    I am not entirely sure how I need to measure for the chimney cap. I have a rough estimate of 40' x 11' for the internal flute, which is flush with the chimney itself. Do I measure the inside or the entire chimney?
    By Owen on July 25, 2017

    It would depend on how you would like the cap to mount. On a flue mounted cap, we would need the ID and OD of the flue itself.

    By Heather from Gainesville, Georgia on January 14, 2013
    We are looking for a "fireproof" product or material to place on top of our chimney cap to hopefully get rid of noise. We have a 2 story home with a fireplace containing gas logs on each floor. The second floor fireplace is in our master bedroom & unfortunately we have a hickory nut tree that drops nuts on top of our stainless chimney cap, thus making a lot of noise. Rain is also a noisy factor due to the cap being 12 feet away from our bedroom ceiling and our home being located on the highest elevation on the lake in our state, we see a lot of heavy storms/wind making a lot of noise. Do you know of any "fixes" or products available?
    By Collin C. - NFI Master Hearth Professional on January 15, 2013

    Unfortunately, I do not have an insulating material that can be applied to a chimney cap that with withstand both the heat and outdoor elements. The main thing I can suggest would be to cut several pieces of sheet metal to the same size as the cap lid and either rivet or screw them to the lid. By adding layers of metal, this will increase the overall thickness of the lid and will cut down on reverberation. Applying a thin layer of construction adhesive between the layers of metal would further insulate the noise. I apologize that I do not have a premade product to remedy this issue.

    By Beth Burkette from Denham Springs, LA on November 27, 2016
    Where would I find a chimney cap screen?

    By Bill from MI on August 12, 2017
    Is it okay to overlap the pre-existing mesh with more protective covering in my situation? I'm having a hard time with bats entering my house. Everything is sealed except my chimney cap has 3/4 mesh. It is a natural gas set up.
    By Kelsey C. on August 14, 2017

    We would not recommend overlapping the pre-existing mesh as this could result in too little air space available for the exhaust fumes to escape from your chimney. If you have a pre-fabricated chimney, we would suggest a louvered top replacement or changing to a cap with 5/8" mesh.

    By Sally from Homeworth, OH on October 3, 2015
    If my chimney flue measures 12 x 12 1/2 inches, what size of chimney cap should I get? I need one with a damper as well.
    By eFireplaceStore on October 5, 2015

    Based on your dimensions, one of our best selling caps, the Lock-Top II 13 in. x 13 in. Base Chimney Cap and Damper Combo. The mounting ring is adjustable to various dimensions for different tile thicknesses.

    By Debbie from Edmond, OK on January 9, 2014
    I have a Majestic BC36 wood burning fireplace. On windy days, puffs of smoke come into the living room. Do you have any solutions for this?
    By Collin C. - NFI Master Hearth Professional on January 9, 2014

    Unfortunately, this is an issue that often plagues open faced wood burning fireplaces, as they have a characteristically weak draft that wind can easily overwhelm. A product that is designed to help with this issue is the HomeSaver Air-Cooled WindBeater Stainless Steel Chimney Cap - 8 Inch Round. The internally baffled cap acts as a stop to the wind and the lower baffle below the cap will still allow your chimney to breathe properly.

    By Barbara Jouett from Santa Barbara, CA on December 2, 2016
    We are looking for an oval chimney cap for an older home. The unit is set onto an oval plaster shape over the basic chimney. After years, ours has was blown off in a strong wind.
    By Brennan W. on December 2, 2016

    We will be happy to see if we have anything that would fit. What are the dimensions of the flue?

    By Jim from CT on October 19, 2015
    I have a multi-flued chimney that is rectangle that measures 8 x 8 and 8 x 12. One flue is taller than the other and stands approximately 5 inches above the crown. How much is required from the top of the flue to the cap?
    By eFireplaceStore on October 20, 2015

    For proper draft, you should maintain at least 5 inches of clearance from the top of the flue tile to the underside of the cap lid.

    By Martin Luchak from Wiemar, Texas on November 15, 2016
    I have a 100+ year Catholic Church with a brick chimney. The outside dimension are 47" x 47", inside dimension 20"x 20". The boiler in the basement is exhausting into a 12" pipe into the chimney. I would like it to be side mounted and material to be 22 gauge copper with copper screen 8" tall.

    By Jim from Woodland, WA on January 4, 2014
    I have a large woodburning fireplace with a 13" rectangular flue that is flush with the top of the chimney. Which single flue caps have available mounting hardware to attach to the flush top? It's fairly windy here so legs are probably not the best option. Also, I probably need 10" or more in height. What do you suggest?
    By Collin C. - NFI Master Hearth Professional on January 6, 2014

    For your application, a swing tab type of cap would be the best item to use. An example is the BigTop 14 in. x 21 in. Painted Black Galvanized Steel Multi-Flue Chimney Cover. The mounting tabs can be pivoted to fit any angle of your chimney wash. You can utilize either construction adhesive or masonry anchors and screws to hold the unit to the chimney wash. This model is available in a 10 inch screen height as well.

    By Steve from Portland, OR on October 17, 2016
    My chimney measures 18 x 46 outside. Would i purchase a 17 x 45 cap?
    By Will M. on October 18, 2016

    If you are considering a product like the Multi-Flue Semi-Custom Gelco Chimney Cap - 8" High Mesh, there are reversible 3/4" swingtabs located along the base of the mesh for mounting the cap to a chimney crown surface. As such, the 17" x 45" dimension you've provided would work.

    By Andrew from Roswell, GA on November 24, 2015
    I'm trying to determine which size of chimney cap to buy. I know i want to do one that covers the entire top of the chimney and not just the flue. I have a brick chimney with the outside measurements of the top being 25x29" and the flue itself sticks up about 3". What dimension of chimney cap should i order?
    By Will M. on November 24, 2015

    You may use a surface mount cap that is slightly smaller than your outer crown surface, yet larger than the outside dimension of your 3" flue tile extending from the crown. You will need to select a mesh height that is at least 5" taller than the highest flue tile extending from the crown for proper draft. The Multi-Flue Semi-Custom Gelco Chimney Cap - 8" High Mesh is one example of a suitable option.

    By Chris from Chula Vista, CA on May 30, 2016
    I am looking for a galvanized steel chimney cap for a Rampart General built chimney with a flue diameter of 11" x 11". There is no real 'external' flue tile to attach a cap TO: the old cap (rusted badly) has grab-bars that go INSIDE the flue.
    By Brennan W. on May 31, 2016

    By Dave Lance from Cerritos, CA on February 24, 2013
    I need a chimney cap. I have a problem with bees. Do they make a chimney cap with mesh small enough to keep the bees out?
    By Collin C. - NFI Master Hearth Professional on February 25, 2013

    For instances when small insects are a nuisance, I recommend wrapping the factory chimney mesh with a smaller gauge stainless steel wire mesh. So as not to impede draft, I do not recommend going smaller than 1/8 of an inch.

    By RC from Montville, NJ on August 3, 2014
    I am looking for a Dual Flue Chimney Cap in stainless steel. See the sketch of the two Flues below. Could you please advise what size I should use? The 8 1/2 x13 Flue is used with an oil furnace. The other 13 x 13 is for a fireplace which is not used.
    By eFireplaceStore on August 4, 2014

    Based on your supplied information, one of our semi custom caps will serve you best. The Multi-Flue Semi-Custom Gelco Chimney Cap - 12" High Mesh will be the best choice, as the 12 inch mesh height will be needed to clear the flues properly. Once on the page, you can select a 24 inch length, 16 inch width, standard mesh, and standard overhang. This will give you a proportional cap with perfect coverage.

    By Jerry from San Diego, CA on January 17, 2016
    I have an old chimney; flue interior dimensions are approximately 9.75" x 26.75" but it varies where the dimensions are taken. The exterior dimensions are approximately 14" x 31.5". I don't use the fireplace so I'm not worried about a spark arrestor or chimney draft. What sort of caps are available and what would you recommend?
    By Will M. on January 18, 2016

    If you are not intending to use the fireplace, the Multi-Flue Semi-Custom Gelco Chimney Cap - 8" High Mesh chosen in a 30" W x 13" L dimension should work. Please note that this would need to be chosen with 5/8" California mesh and the chimney flue will need to be relined if you are needing to pass inspection.

    By Joseph on November 9, 2012
    What are the pros and cons of single chimney caps vs. one cap that covers both flues?
    on November 9, 2012

    The main advantages to a single cap are a cleaner look and generally lower cost overall. It will also eliminate the need for determining the proper lid size needed for the side by side flues. However, a single cap can cause back drafting issues, if the flues are close to each other. Individual caps, especially if they are staggered in height, will help to avoid the individual flues pulling against one another. Obviously, there must be enough clearance between the caps so that they do not bump one another. Please let me know if I can assist you further.

    By Ray on November 9, 2012
    I am looking for a 17" x 22" chimney cap preferably that has a tightening band used to attach it to chimney. What options do you have available?
    on November 9, 2012

    Please view the cap at the link below. It has an outside perimeter band as you describe and can adjust between 16.5" to 18.5" on one side and 20.5" to 22.5" on the other. This should suit your needs accordingly. Chimney Cover Please let me know if you have any technical questions about the product or if I can help you in any other way.

    By Pete on November 9, 2012
    I have a double flue, each about 18 x 18. I use a vent free gas log set. I would like a flat cap on each flue. We live on a high ridge with a lot of wind. Is all is right if we get rain in the flues, even though the total stack has a concrete cover? Bottom line: we don't need the wire, just a means to tighten down a cover. Do you have any ideas?
    on November 9, 2012

    Given the fact that a vent free log set does put off some residual heat to the chimney, I would recommend using a wind/rain guard on the side of the chimney that is exposed to the prevailing wind the most. This way, the chimney will still be able to vent properly, but will be less susceptible to water intrusion. Unfortunately, this would be somewhat of a custom application, as we really do not carry anything that can be used on larger chimneys as a wind guard. You would likely need to have a guard manufactured by a fabricator out of 22 gauge stainless steel. Unfortunately, we do not offer any fabrication. We are a dealer of finished products only.

    By Greg on November 9, 2012
    What is the lowest cost for an 8" high cap that will fit my brick chimney with an outside diameter of 17.75" X 27"?
    on November 9, 2012

    Unfortunately, I do not have a cap in these exact dimensions. However, I do have caps that are slightly smaller and can be attached to the top of the chimney, rather than around the outer perimeter.

    By Gary from TX on June 17, 2016
    My chimney is topped with mortar. There is no flue rising from inside the brick chimney walls. How does the cap attach to the chimney in this case?
    By Will M. on June 17, 2016

    Please note that most local code offices will require the chimney flue to extend at least 2" above the tallest flue tile, but I recommend choosing a cap like the Multi-Flue Semi-Custom Gelco Chimney Cap - 8" High Mesh as this will allow you to mount the base of the cap to your chimney crown surface using the reversible 3/4" swing tabs.

    By Mary from Sacramento, CA on November 16, 2016
    I own several residences at South Lake Tahoe, California, which have custom fireplaces; all clean, but require chimney caps for new fire protection codes. How do I know which height: 8, 10, 12 inches high?

    By Gabe from Scotch Plains, NJ on January 20, 2015
    I just purchased a house with an old Temco TLC 39-1 fireplace insert and discovered that the chimney cap was missing. When I tried searching for Temco, I couldn't find anything online and I fear they went out of business. What are my options at this point?
    By eFireplaceStore on January 20, 2015

    Temco is indeed no longer in business and their chimney systems have been discontinued. This unit uses an 8 inch air cooled class A chimney system. A universal cap that we carry that will work in place of what you had is the HomeSaver Pro 8 Inch Round Chimney Cap for Air-Insulated Factory-Built Chimneys.

    By Bob from Seattle on February 14, 2014
    I have a Napoleon GDi44 with two 3 inch liners that attach to a Napoleon 14 x 16 high wind co-terminal (GDi226). The flue is a clay tile 12 x 16 in size and extends 10 inches above the crown. Do you have anything that can be used to attach the terminal to the flue, or a base that the terminal can be attached to for mounting to the flue?
    By Collin C. - NFI Master Hearth Professional on February 14, 2014

    Unfortunately, we do not offer any particular attachment to be used with the co-linear termination. Typically, the terminal would be attached with construction adhesive, but if you have too much overlap and air space results, you may need have a custom mounting plate made for the terminal to attach to. The only other option would be to cut down the terra cotta flue tile to be flush with the crown, allowing the termination to be cemented directly to the crown mortar.

    By Tom from Long Valley, NJ on September 8, 2014
    Is there a minimum distance from the top of the flu to the underside of the top of the cap? I wanted to make sure that I had enough distance to allow a proper flow.
    By eFireplaceStore on September 9, 2014

    The minimum required gap between the top of a clay flue tile and the underside of the cap lid is five inches. Keep in mind that this is a minimum and an inch or two of extra space will help to improve draft further, especially on shorter chimneys.

    By Charles from Tucson, AZ on November 2, 2016
    What is the correct way to measure for a chimney cap? We have a large fireplace; floor to ceiling. Do I have to go onto the roof to measure the opening?

    By Mark from Marietta, GA on December 13, 2016
    I have a direct vent chimney cap on a Martin model BW4245A fireplace and would like to switch to a vented gas log fireplace. Do you have a cross reference for what cap I need to install?
    By Will M. on December 13, 2016

    You would simply need to convert this back to a functional wood burning fireplace. Any refractory panels that may have been removed for installation of the insert will need to be replaced and the direct vent cap (and liner) will need to be removed and replaced with a cap that is safe for use with a wood burning fireplace. As the listed caps for Martin Industries fireplaces have been discontinued for quite some time and I have no access to the flue dimensions, please provide the inside and outside diameter of your chimney so that we may locate a universal cap.

    By Chuck from Westminster, CO on August 7, 2015
    My double flue chimney pipe is approximately 49 x 19 and my chimney is tin that is designed to look like masonry. Must the cap be screwed into the tin, or is there some sort of corner mount system available?
    By Brennan W. on August 7, 2015

    These caps are designed to be adhered with sealant and then screwed into a masonry chimney crown.

    By Ann from Winston-Salem, NC on August 29, 2014
    I have a flue, 10 3/8 inches square, flush with the chimney top. I want a chimney cap with mesh to keep out the birds and the top to keep out the rain. What would you suggest?
    By eFireplaceStore on August 29, 2014

    I recommend installing a product such as the Gelco Model A 14 in. x 14 in. Base Fully Assembled Black Steel Multi-Flue Chimney Cap. The screen mesh will do a fine job of keeping out rodents and pests, while the overlap of the lid will provide a good apron of dry area to help prevent rain from entering the flue.

    By Paul from Trenton, Ontario on November 4, 2012
    I have a 5-inch liner inside an 8 inch x 12 inch clay flue tile. Can you please advise products that will fit this application? I prefer copper.
    By Collin C. - NFI Master Hearth Professional on November 5, 2012

    As far as capping the 8 x 12 flue tile goes, the Gelco 8 in. x 13 in. cap could be adjusted to work. However, I am unsure of how your 5-inch liner is currently supported. It is possible to attach this cap over an existing top plate, if that is what you currently have.

    Also, the supplier of this cap will not ship to Canada, but we could ship to a U.S. location for shipment forwarding of the cap.

    By Jonathan from Newbury Park, CA on February 15, 2017
    I need a chimney cap and the opening is oval and 15 3/4 by 8 inches. What size do you think I should get?
    By Owen on February 16, 2017

    For a crown mounted cap, you should measure from the outside edge of the the flue, rounding up to nearest inch.

    By Bill from Long Island, NY on March 27, 2017
    I have an 8" X 8" and an 8" X 12" flue next to each other on a chimney. I need a custom cap that will fit over both and can still mount to the clay flue. The outside dimensions are 81/2" X 241/2." Is this possible?
    By Owen on March 27, 2017

    Yes it is possible, or you could use a crown mounted cap.

    By Gary from Green Bay, WI on July 11, 2016
    I have an air insulated chimney that measures 12 inches outside and 8 inches inside diameter pipe. Which chimney cap will vent the interstitial space?
    By Will M. on July 12, 2016

    With air-cooled or air-insulated chimney, the listed cap for your chimney system should be used and we should be able to confirm the correct cap via the make and model number of your fireplace. If the original, listed cap is not available, the HomeSaver Pro 8 Inch Round Chimney Cap for Air-Insulated Factory-Built Chimneys should be sufficient.

    By Perry from Cutler, Ohio on November 24, 2012
    I purchased 6" double wall Super-Vent chimney pipe and I need to purchase a chimney cap. Is a Super-Vent cap the only brand that will work with this pipe?
    By Collin C. - NFI Master Hearth Professional on November 26, 2012

    Any push-in type of 6 inch cap for factory built chimneys will work. Selkirk's SuperPro line also uses the same type of twist lock mechanism as their Supervent line. As such, this SuperPro All-Fuel Deluxe Chimney Rain Cap would offer a direct fit to your existing chimney and would give a factory appearance.

    By Eric from Hillsborough, NJ on May 2, 2014
    I need to cap off two chimneys on my home. The round opening is 10" diameter but the opening doesn't extend very far out. The rectangular opening is about 42" wide by 22.5" wide for the outside brick measurement.

    I would like to know if any 10" round diameter rain cap will work for the first chimney. For the second, do you sell rectangular solid caps to cover the opening completely? That chimney is not in use.
    By Collin C. - NFI Master Hearth Professional on May 5, 2014

    For the first chimney, it appears you have enough projection to use a cap such as the HomeSaver Pro 10 in. Diameter Base Black Steel Chimney Cap for Round Clay Flue Tiles. For the second chimney, a custom solid cover can be fabricated. This will include a reinforced center span and drip edge, also in black galvanized steel. If you would like to place an order for the custom cap, I can contact you via phone to do so.

    By Gordon from Manchester, TN on February 26, 2016
    How do I measure my chimney to get an accurate measure for a chimney cap?
    By Will M. on February 26, 2016

    There is a wealth of information available on our site posted about this here.

    By Rick from MA on October 5, 2015
    I'm looking for a cap that will fit a chimney flu that is 6 3/4 inches x 6 3/4 inches - inside dimension. The flu is flush with the cement cap. What would you suggest?
    By Will M. on October 6, 2015

    If this is a square flue and you are not in an area with extremely high winds, the Gelco Stainless Steel 8 in. x 8 in. Base Single-Flue Chimney Cap will work along with the Gelco Stainless Steel Flue Gripper Leg Set.

    By Charles from Bend, OR on January 25, 2017
    I have a Tr344 chimney cap, presently, that I believe is more prone to creosote build-up with the outside of the pipe spark arrest or vein construction. The inside pipe has very little build-up, almost nothing. It is most prone during very cold days and nights. I have to wire brush it a couple of times a season.

    By Owen on January 25, 2017

    Creosote will form once the flue gases fall below 225 degrees. If this happens before the gases clear the pipe, or in you case the cap, it will condensate on the cooler surface.

    By Rigo from Dallas, TX on November 18, 2014
    Do you use screws to mount the Gelco Muti-flue to the top of the chimney?
    By Kevin E. on November 18, 2014

    That is correct. Standard masonry fasteners should be used.

    By Tim from Statesville, NC on November 27, 2014
    My chimney measure 16 5/8 inches x 55 1/8 inches. How does the cap anchor to the chimney? Do I need to cut back the mortar cap and make the cap smaller or does the cap anchor to the side?
    By Tyler M. on November 28, 2014

    Assuming you are referring to the Gelco semi-custom multi flue caps, those caps can be installed in one of two ways. The first is to set the cap in position to verify proper fit, then trace the outer perimeter of the mounting flange. You can then apply a bead of construction adhesive just inside the traced line, then position the cap again. This is the easier way to install, but the cap will be difficult to remove, should it ever need replacement.

    The second way is to position the cap, then mark 4 to 6 attachment points evenly spaced around the perimeter of the perforated mounting flange. The cap must then be set aside and a masonry bit used to drill anchor holes into the chimney wash. After installing mounting anchors, place the cap in position again and fasten it to the wash with coarse thread screws.

    By Dona from Searcy, AR on November 4, 2012
    I have a double-wall solid pack insulated round chimney pipe. The interior pipe is 6". Exterior is 9". My present chimney cap has the interior pipe and then an exterior wall that fits over the outside pipe. The stove is installed in the front, on a very steep roof that is a single story in the front and two story in the back.

    I need a replacement but am not sure exactly what to get. The company that installed the stove is out of business and there is nothing to tell me the brand of the original cap (22 years old).
    By Tyler M. - Fireplace Specialist on November 5, 2012

    We recommend the HomeSaver Guardian 6-Inch Diameter 316-Alloy Stainless Steel Chimney Cap. This cap will slide inside your 6" inner pipe with a tight friction fit.

    By Leland from Seminole, TX on August 9, 2015
    I have a chimney flue that is 17 1/2" x 13 1/2". Would a chimney cap that is 18" x 14" work for that size of chimney?
    By Kevin E. on August 9, 2015

    Yes, assuming your chimney wash extends out far enough to provide a surface for mounting the cap, an 18" x 14" should serve you well. You will need to order a cap that provides a minimum of 5" of clearance between the top of your flue and the bottom of the chimney cap lid.

    By Joe Dorman from Seattle, WA on December 9, 2016
    I would like to cap multiple flues that measure 29 1/2" x 12" overall. The outside dimension of brick chimney is 48" x 24".
    By Brennan W. on December 9, 2016

    We will be happy to make a recommendation. If you could, please let us know how far the flues extend off the top of the chimney.

    By Doug from Dallas, TX on November 23, 2016
    I need a cheap 24" X 36" cap; preferably in black galvanized.

    By Steven from Los Angeles, CA on September 8, 2015
    My chimney measures 21 1/2 x 21 and does not seem to have a flue. There is an oval hole down the center of the chimney which is about 9 1/2" x 11". There is now flue or lip protruding above the mortar at the top of the chimney. The mortar is sloped or angled and rises about 3" above the bricks.
    What sort and size of chimney caps should I consider?
    By Brennan W. on September 9, 2015

    Based on your information, we would suggest the Duro-Shield 21 in. x 21 in. Aluminum Band-Around Brick Single Flue Chimney Cover.

    By Teresa from Satsuma, Florida on January 18, 2013
    I have a 1992 mobile home that has a FMI fullview fireplace model # 36ECM ll. I am trying to find a replacement round top termination cap. Do you know where I can get one?
    By Tyler M. - Fireplace Specialist on January 18, 2013

    Some of our best sellers include the multi-flue, semi-custom Gelco chimney covers with high mesh, which are available in a variety of sizes. We also sell a base stainless steel multi-flue chimney cap. All of our products come with a lifetime warranty, and also lists its exact dimensions and specifications. We've also provided a list of common questions and answers for most of these products.

    Your chimney cap will help prevent damage from such things as rain, debris, and pests. We specialize in different types and styles of chimney covers. The HomeSaver Pro 8 Inch Round Chimney Cap for Air-Insulated Factory-Built Chimneys and Lock-Top II 13 in. x 13 in. Base Chimney Cap and Damper Combo are two of our best sellers. We also have a wide variety of rain, vent, and flue caps. Many of these chimney flue caps come in different materials such as aluminum, galvanized steel, stainless steel, and copper. We are also proud to offer multi-flue caps, as well as removable caps that allow for easy cleaning. It's our privilege to offer affordable prices, so you can have the most beautiful and classy chimney cap in your neighborhood without breaking your budget!

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