By Norm from Seattle, WA on July 12, 2012
Can I use this to adhere firebricks to a concrete block fireplace. If not, what do you recommend?
By Collin C. - NFI Master Hearth Professional on July 12, 2012
Answer:This product can indeed be used to set and finish firebrick to a cement pad or block fireplace. Please keep in mind that the fireplace will need to be heat cured to at least 500 degrees, within a week of using this product.
By Greg from Philadelphia, PA on February 27, 2012
I have a wood burning fireplace that has a tile floor and I was looking to update the tile. If I were to rip out the tile and replace it with a new tile floor, what would I use for the mortar bed and what could I use for the grout? Could they be the same product? If so, what product?
By Kevin E. - Fireplace Specialist on February 28, 2012
By Steve from Wheaton, IL on March 23, 2015
Can I use this product to coat a refractory panel in the back of my wood burning firebox?
By eFireplaceStore on March 24, 2015
Answer:This product can indeed be used as a thin coating to damaged refractory panels, although the difference in heat expansion between the product and the panel means that the solution may only be temporary. The product should be cured immediately after the initial drying period to ensure maximum hardness.
By Lowell from Lexington KY on April 19, 2014
How do I heat treat the repaired joints?
By Collin C. - NFI Master Hearth Professional on April 21, 2014
Answer:For a wood burning stove, the best method is to build a compact, hot fire. Exceeding 500 degrees is not a problem, but the fire should be kept as compact and dense as possible, to prevent any ash or embers contacting the cement.
By Erica from Bergen County, NJ on October 15, 2014
I have a 100 year old fireplace with what appears to be cement covered bricks lining the firebox. This past winter several patches of the concrete flaked off ( 2-3 inch areas) exposing the underlying brick. Can this product be used to recover the brick and blend or smooth over onto the remaining concrete?
By eFireplaceStore on October 16, 2014
Answer:This product can indeed be used to resurface the interior of your firebox. I highly recommend using a chisel and hammer to break loose and remove as much of the existing cement as will readily separate. This will help to prevent additional separation from beneath the new cement, which would result in new cracks forming.
By Gary from Woodbury, CT on September 30, 2013
Is this the right product to patch solid stone/granite fireplace bases (with ash clean-out trap doors)? Over time, the bases in two of our fireplaces have worn into concavities under the fire grates. They have been patched by previous owners, and that cement is now crumbling away. The areas are approximately 3/4" deep and 8' - 12" wide.
By Collin C. - NFI Master Hearth Professional on October 1, 2013
Answer:This product can indeed be used for this type of application. However, I do recommend layering the product, as covering the indentation in a single 3/4 inch deep layer will likely yield the same results that you are experiencing now. Adding the product in a single 1/2 layer is acceptable, then adding a second layer when the first has had approximately 1 hour to begin setting is the best way to proceed.
By John from Detroit, MI on March 17, 2015
Can the refractory fireplace cement be used to repair the floor of my wood burning pizza oven? It has become pitted and I need a "skin coat" to smooth and level the floor.
By Will M. on March 17, 2015
To withstand the temperatures produced by a wood stove, I would recommend using furnace cement.
By Robert Roelle from Huntington, NY on February 11, 2013
Where the fireplace box meets the hearth, there exists a gap of about 5/8 inches wide and 4 inches deep. Is there a fireplace mortar that can be used for the 4 inch deep gap that I need to fill? If not, Can I use a regular concrete patch to fill most of the gap, allow it to set, and then top the gap with the refractory product?
By Collin C. - NFI Master Hearth Professional on February 12, 2013
Per the manufacturer, this gap could be sealed with the Rutland Castable Refractory Fireplace Cement - 12.5 Pound Tub
. The product would need to be applied in layers of about 1 inch at a time, then allowed to set for approximately 1 hour before applying the next layer.
This product makes an excellent, long lasting seal of large cracks and joints when applied in this manner.
By Eric from Pennsylvania on November 1, 2012
I have a homemade box stove and I don't know how to line it with fire brick. I have the bricks and cement. Do I lay the brick on a bed of cement for the bottom? Do I leave space between bricks? And the sides I have to go 3 bricks high. Do I put cement on the back of the brick and slap it in ?
By Tyler M. - Fireplace Specialist on November 1, 2012
Answer:We recommend contacting a local mason for more information regarding your construction. We only deal with manufactured wood stoves. We apologize for the inconvenience.
By Kim from OR on November 17, 2014
I am trying to heat cure some repairs to a firebox using refractory cement but I will not have a fire until after I can have this cured and painted. Can I cure this with a space heater and, if so, for how long before painting it with a high temperature paint? If not, what other options do I have knowing that I cannot build a fire until after I have painted the surface?
By eFireplaceStore on November 18, 2014
Answer:Unfortunately, a space heater will not be able to provide the necessary temperatures to cure the surface properly. To be honest, building a fire is the only way to cure the product, as it requires constant exposure to 500 degree heat for at least an hour. The fire can be kept fairly small and confined to keep from getting the surface dirty.
By Robert from St. Paul, Minnesota on May 20, 2014
I live in Minnesota and have an outdoor fire pit. Can this product be used to adhere to brick on top of brick with all of the inclement weather we have in MN? The bowl which sits on top of this brick holds the wood to be burned. The bricks are 11" x 7" x 9" and 2" thick and there are 11 of them forming a circle.
By eFireplaceStore on May 20, 2014
By Freddie from Memphis, TN on March 13, 2013
My fireplace is 40 years old. I've never close the vent. The back wall has cracks in it and I was hoping to repair it myself with the cement. Is this possible or do I need to get a new liner for the back wall?
By Tyler M. - NFI Certified Specialist on March 14, 2013