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    SBI Micore-300 Mineral Fiber Board - Pack of Four

    230.95
    List Price: $289.99
    Sale Price: $230.95
    You Save: $59.04 (20%)
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    * Usually Ships Same Business Day.

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    Product Details
    Manufacturer: SBI
    Part Number: AC02565B
    eFireplaceStore Item Number: SBI-AC02565
    UPC: 773388155326

    Features

    • Micore-300 mineral fiber construction
    • Pack contains four boards
    • Board Dimensions: 48" x 24" x 1/2"
    • R value per 1/2 inch sheet of Micore is 1.04
    Versatile and sturdy, with a nearly endless list of applications, Fiber Board from SBI is simply peerless. This Micore-300 Fiber Board features mineral fiber construction for extra safety and durability. This pack contains four exceptionally high-quality Micore-300 boards. The boards themselves measure 48" x 24" x 1/2", and make for a splendid addition to whatever project you're using Fiber Core for. SBI's high quality materials are among the finest in the industry. You can't go wrong with this stellar Fiber Board from SBI.
    Customer Questions & Answers
    24 Questions & 24 Answers
    Cindy
    from Winchester, KY asked:
    October 30, 2018
    Does heat transfer through this material?
    1 Answer
    Heat does transfer through this material.
    Brennan W.
    on October 30, 2018

    Chuck
    from Detroit, MI asked:
    May 16, 2018
    Can this be used to line an outside fireplace pit?
    1 Answer
    Unfortunately, this is not approved for outdoor use.
    Brennan W.
    on May 16, 2018

    Jim
    from Phoenix, AZ asked:
    April 17, 2018
    Can this be prepped and plastered over?
    1 Answer
    Yes it can.
    Owen O.
    on April 17, 2018

    Gary
    from NE asked:
    November 13, 2017
    Could I use this under a wood stove?
    1 Answer
    These could indeed be used under a wood stove.
    Brennan W.
    on November 14, 2017

    Jake
    from Los Angeles, CA asked:
    October 28, 2017
    Would this be good to use inside of a safe with thick steel walls to create a degree of fire-resistance?
    1 Answer
    Those panels provide heat resistance, so it would offer some benefit, yes.
    Owen
    on October 30, 2017

    Jim
    from TX asked:
    October 19, 2017
    Can this product be installed directly to the studs? Also, can drywall mud be applied directly to product and textured and painted?
    1 Answer
    This can indeed be attached to the studs and you can cover the surface of it with drywall mud.
    Brennan W.
    on October 19, 2017

    William
    from McCormick, SC asked:
    September 17, 2017
    Can this be used as a surround for a gas fireplace requiring non-combustible materials?
    1 Answer
    Yes, this product is considered a non-combustible material.
    Owen
    on September 18, 2017

    Kim
    from Northern California asked:
    December 14, 2016
    What can I use as an adhesive for this?
    1 Answer
    Adhesive does not hold well to the micore board, so it is recommended that these are installed using standard wood screws.
    Brennan W.
    on December 14, 2016

    Ferman
    from NJ asked:
    August 25, 2016
    Can this be used outside behind a outdoor barbecue grill as a fire protection for a wall?
    1 Answer
    This product cannot be used in an outdoor installation.
    Will M.
    on August 26, 2016

    Audrey
    from GA asked:
    March 21, 2016
    What does each sheet of SBI fiber board weigh?
    1 Answer
    Each piece weighing in at approximately 8 pounds.
    eFireplaceStore
    on March 22, 2016

    Jessie
    from Fairhope, AL asked:
    January 29, 2016
    Do I glue this SBI Micore-300 board to the subfloor or do I just screw it down?
    1 Answer
    This can simply be screwed down using wood screws.
    Brennan W.
    on January 29, 2016

    Russ
    from Kalamazoo, MI asked:
    November 29, 2015
    Can I mortar ceramic tile directly onto this SBI Micore-300 mineral fiber board or does it need a layer of cement board first?
    1 Answer
    A cement backer board should be used first. The Micore product is not a high density material and compressibility is high enough that concentrated pressure from a stove leg or other point of contact could cause a shift or crack in the tile veneer.
    eFireplaceStore
    on November 30, 2015

    Laura
    from AZ asked:
    October 15, 2015
    What temperatures can this SBI Micore-300 mineral fiber board withstand?
    1 Answer
    This product can withstand sustained temperatures of 450 degrees Fahrenheit, but can withstand temperatures of 550 degree Fahrenheit intermittently.
    Chris C.
    on October 15, 2015

    Charles
    from Santa Barbara, CA asked:
    May 13, 2015
    How does one cut this SBI Micore-300 mineral fiber board?
    1 Answer
    Micore can be cut with a utility knife.
    Brennan W.
    on May 13, 2015

    Brad
    from Ridgecrest, CA asked:
    December 29, 2014
    Can I put granite directly on top of the Micore?
    1 Answer
    Granite can "float" directly upon the Micore product. However, if you are planning to adhere the granite permanently, a layer of cement backer board should be screwed to the Micore first, as adhesive does not hold well to the mineral construction of the Micore product.
    eFireplaceStore
    on December 30, 2014

    Kimberly
    from NH asked:
    September 2, 2014
    Can the boards be stacked to achieve higher R rating?
    1 Answer
    You can indeed layer the product to achieve a higher R value, if the manufacturer requires it.
    eFireplaceStore
    on September 3, 2014

    Max
    from Hedgesville, WV asked:
    October 19, 2013
    If the installation calls for a 1/2 inch Micore board and 24 gauge steel sheet for floor protection, which goes on top and which is the bottom next to the floor? How should it be fastened down?
    1 Answer
    The 1/2 Micore board should be used as the substrate with the steel sheet placed over the top of the Micore for additional protection and finishing. If the Micore is upon a combustible surface, wood screws should be used every 6 to 8 inches to secure the Micore to the floor. The 24 gauge steel can then be secured to the Micore using construction adhesive.
    Collin C. - NFI Master Hearth Professional
    on October 21, 2013

    Steve
    from CT asked:
    August 21, 2013
    What is the value of one sheet of Micore?
    1 Answer
    The R-value of the Micore board is 1.03 for every 1/2 inch of board that is used.
    Collin C. - NFI Master Hearth Professional
    on August 21, 2013

    Gerry
    from San Jose, CA asked:
    January 26, 2013
    Could a granite slab be placed on top of the Micore 300 board?
    1 Answer
    The Micore 300 product is indeed dense enough for granite or stone to be placed on top of it. Most installations will require two layers of Micore to achieve the minimum required R value.
    Collin C. - NFI Master Hearth Professional
    on January 28, 2013

    Curt
    from Cornwallville, NY asked:
    December 5, 2012
    Does cutting this compromise the thermal resistance of the board?
    1 Answer
    Cutting the Micore board will not compromise its R-value. As long as the thickness of the board is not changed in any way, the product will meet the same listed values outlined on the data sheet.
    Collin C. - NFI Master Hearth Professional
    on December 5, 2012

    Jason
    from Dallas asked:
    December 5, 2012
    Is this a good product to use as a sub-floor in front of the fireplace?
    1 Answer
    This product was recently revised with increased density that would make it ideal for this type of application. Its superior R-value over concrete board makes it an excellent substrate to be used for hearth extensions and hearth boards/pads.
    Collin C. - NFI Master Hearth Professional
    on December 5, 2012

    Curt
    from Cornwallville, NY asked:
    November 27, 2012
    Can you apply ceramic tiles directly to this board with thin set mortar?
    1 Answer
    You can indeed apply ceramic tile directly to this product, but for better results it is recommended to use a layer of cement backer board over the Micore.
    Collin C. - NFI Master Hearth Professional
    on November 28, 2012

    T
    from USA asked:
    September 19, 2012
    What is the shipping weight for the pack of four?
    1 Answer
    The shipping weight on this pack of four mineral fiber boards measures 34 lbs.
    Tyler M. - Fireplace Specialist
    on September 19, 2012

    Charles
    from Mariposa, CA asked:
    January 19, 2012
    What temperatures would this product withstand?
    1 Answer
    This board is able to provide protection from continuous temperatures of up to 450 degrees and intermittent temperatures of up to 550.
    Collin C. - NFI Master Hearth Professional
    on January 19, 2012

    Customer Reviews
    4.7
    34 Reviews
    5
    76% (26)
    4
    21% (7)
    3
    0% (0)
    2
    0% (0)
    1
    3% (1)
    97% Recommend this product (33 of 34 responses)
    By Norm from Minneapolis on November 14, 2018
    I would recommend this item to a friend.
    Sauna Heat Shield Application
    After contemplating how to make an existing small, Cedar log sauna building as safe as possible for a wood burning stove (Kuuma), I was advised by a fireplace company to look into Micor. I've only just started using the outdoor, rustic sauna but so far, so good. It seems to be doing the job. I feel it's as safe as I could get the heat shields (Dura Rock on the wall, spacers of 2 inches and then Micor) it so it's worth the extra cost.
    ProsLightweight
    ConsDamaged corners upon delivery....they should put a plastic corner protector before shipping 4 sheet package and print do not drop on corners on shipping boxes.
    By Mark from TX on February 28, 2018
    I would recommend this item to a friend.
    Great service
    The store had what i wanted and it shipped quickly and arrived in perfect condition.
    By Patrick G from Smithtown, NY on February 20, 2018
    I would recommend this item to a friend.
    Impossible to find Except here.
    My wife and I purchased a new Medota gas fireplace and we're having a granite hearth installed which required a half inch fiberboard with an R-factor that was at least 1 or higher. I researched and found that Micore Mineral Fiberboard 300 was exactly what I needed but no one on Long Island, New York sold it. I found a hardware store in Ohio that would ship me a pallet with 75 pieces and I only needed one. Then I found the e-fireplace store that shipped me a package of 4 with no shipping charge for $125. The package arrived in 3 days and our hearth was installed that same day. We are now enjoying our new fireplace thanks E-Fireplace Store.
    By KF from Long Island, NY on October 30, 2017
    I would recommend this item to a friend.
    As Advertised
    Four micore boards showed up at my door!
    By Sam from Linesville, PA on October 25, 2017
    I would recommend this item to a friend.
    Glad I Found This Product!
    I am so glad I found this product. My wood burning stove requires a hearth with an R-value of 1.2. I couldn't find any way to make that happen until I stumbled across this mineral board. I put this down and then applied a 1/2" thick cement board on top of it and then set porcelain tile using thin set mortar and grout. I ended up with a beautiful hearth that exceeds requirements.
    ProsLightweight Easy to work with the product High R-value
    ConsEasily damaged if dropped on corners. My box was apparently dropped on a corner during transit. I was able to cut off the damaged areas and still had plenty to complete my project. It would be nice if the packaging could be strengthened at the corners to prevent damage during shipment.
    By Keith from VA on September 14, 2017
    I would recommend this item to a friend.
    Too Much Product
    I only needed a 20" x 22" piece; and, now what do I do with all the rest?
    ProsIt was easy to cut the small piece I needed.
    By Talina from ID on March 18, 2017
    I would recommend this item to a friend.
    Micore Fiber Board
    We tried finding this fireproof board locally with no luck. I ordered it from eFireplaceStore and had in two days at a reasonable cost.
    By Greg from San Rafael, CA on March 10, 2017
    I would recommend this item to a friend.
    Micore Mineral Fiber Board
    Great material to work with.. Used it for a new gas fireplace surround.
    By James from PHILADELPHIA on February 3, 2017
    I would recommend this item to a friend.
    amazing product
    I purchased this for our fireplace facing the area above a gas fireplace that prevents heat from transfer and combustion of regular drywall materials. The fireplace was installed by someone else and was too close to tv and also too large of a unit. We had hardi board but that was heating and retaining heat. We used micore 300 and finished with wire mesh and durabond spackle, came out great heats about 40-50% less than cement board. One note if not going to install cement board on face of micore 300, and going to use as finished wall surface prime the board first. Original fireplace came with 5" of "non combustible facing" but was unable to order more this actaully worked out for me getting almost 18" of micore 300 instead of 5" that came with.
    Proslight weight withstands high heat low thermal transfer
    Consonly con and mostly because i am using as a finished wall surface is needs to be primed prior to spackle ( not exactly a con just using in ways different than intended)
    By Neil from San Jose on January 17, 2017
    I would recommend this item to a friend.
    As advertised
    Nice to find a source for this product online; none of the local big box stores carries this type of product. Shipping was quick and product was in good shape. Satisfied customer.
    By Kim from Hayward, California on January 2, 2017
    I would recommend this item to a friend.
    Cool top!
    We installed this over a custom fire pit to keep the granite top cool. It really works!!!
    By Steven from Iron Mountain on November 25, 2016
    I would recommend this item to a friend.
    Micore 300
    Have not installed yet, product arrived well packaged and undamaged.
    By Matt from Shepherdstown on October 19, 2016
    I would recommend this item to a friend.
    Price is right!
    Good product/quantity for price.
    By JESSE from ATHOL,ID on September 5, 2016
    I would recommend this item to a friend.
    Awesome product .excellent shipping thank you efireplacestore you guys are the best
    It's very hard to find this product ..The family is excited we needed this for are hearth pad ,and thanks to efireplacestore are dreams have came a reality if it wasent for these guys we would be up a creek with no paddle .Thank you folks, much appreciated.
    ProsExcellent service,excellent product.
    ConsNo cons.
    By Marty from NC on January 27, 2016
    I would recommend this item to a friend.
    building code
    great way to meet/exceed the NC building code for a fireplace hearth
    By Amy from Lake Village, Indiana on January 12, 2016
    I would recommend this item to a friend.
    Amazing Product
    We noticed that the wall behind our stove pipe was incredibly hot, so we purchased this product to hopefully eliminate this problem. It has worked amazingly well, drastically reducing the wall temperature!! Ordering was easy and product showed up as promised. Installation was a breeze!!! Thank you efireplace store!!!! Looking forward to working with your store in the future!
    By Erika from Kentucky on December 17, 2015
    I would recommend this item to a friend.
    No hassle company
    I have purchased SBI Micore from this company twice now. Each time it was a painless experience. And both times the product shipped quickly, without damage and arrived ahead of the date promised! Personally, I wouldn't hesitated to buy from efireplacestore in the future.
    ProsQuality product Fast shipping
    By Terry A from Shelburne Falls on November 28, 2015
    I would recommend this item to a friend.
    Great product, solves problems
    Micore 300 solves building code problems with fire separation with minimum of thickness and cost. It is easy to work with and arrives from eFireplaceStore within a day or two. Great product that is hard to find elsewhere.
    By Matthew Morrison from Big Sandy TN on October 29, 2015
    I would recommend this item to a friend.
    Great Price, Great Product
    The only problem I had with the purchase was that the estimated delivery time was wildly inaccurate. I talked to customer service and the next day i got an e-mail that it had shipped. The product ended up being shipped from the manufacturer in Canada. This held up my hearth project for a while but all's well that ends well.
    By Rick from Linden Az on October 26, 2015
    I would recommend this item to a friend.
    SBI Micore-300
    I am using this "stove board" as a heat berrier between the roof of my porch and a patiio heater. Not enough space to feel safe without shield The patio heater puts out 36000 btu on high. I had only apx. 10" or so between the roof and top of heater. So, I ordered this Fiber Board and put it between two pieces of sheet metal.Added a few nuts and bolts to keep it in place and have had good results. This heat shield fits above the heater apx.6"-8 " and between the rafters. I can hold my hand above the shield with heater on high. I have heat resistant paint on the sheet metal and the paint did not peel or burn off. I did not cut the board. Used 24x48 piece since my rafters were 24" on center. So far so good. The product works.
    ProsSo far pruduct performs as claimed. Works well for my application. Reduces space needed between heater/stove and in my case roof boards.
    ConsWill soak up moisture. For my outdoor use wish it was more "outdoor" usefull. I painted over it to hopefully seal it better.Yes, using hi-temp paint.
    By Pam from central Wisconsin on October 6, 2015
    I would recommend this item to a friend.
    Micore for a woodburner hearth pad
    I have not installed this item yet but am so happy to have found it. I asked at a woodburning stove sales shop what insulating board to use for a hearth pad. They recommended Micore Fiber Board and since I had heard of it I welcomed the endorsement as I was already leaning that way. However, they said it was readily available at home improvement stores but I found that is not the case. Thanks to this seller for carrying it!
    By Jim from Southwest, VA on April 7, 2015
    I would recommend this item to a friend.
    The only insulating board I have found for making a stove board.
    I have had no success in finding suitable stove boards at a reasonable price, so I decided to make my own. I previously purchased Micore 300 to make a stove board for the wood stove at my hunting cabin. I had a local sheet metal shop make me a 44" square pan, 1" deep. Painted it black and turned it upside down on 2 layers of Micore, and I had a reasonably priced stove board with an R factor of 2.06. I used 14 gauge metal, which spread the weight out enough for the Micore to be able to support my stove (350#). I am putting another stove in an addition at my house, so I am doing another homemade stove board. I have no doubt it will work out just as good as my first one.
    ProsReasonable price, quick shipping, sturdy product.
    ConsA little damage to the edges in shipping. Not really a problem for me because I had to trim the pieces anyway.
    By Paul G from Cleveland Oh. suburbs on March 29, 2015
    micore300
    Micore 300 was not the easiest stuff to find, and it is pricey, but you get what you pay for! It allows you to make a fireplace hearth that is a lot thinner, rather than using thicker materials, to obtain the ''R'' required. This seller is one of the few places I found that carry Micore, and their shipping was super fast!! I sandwiched the micore between two 1/2'' sheets of Durock next generation cement board, and then finished with multi color slate tile cemented on top. Looks fantastic, and is more protective than the 1.2 R factor that my stove required..
    Prosgreat insulator
    Conskind of pricey
    By Opie from Ronkonkoma, New York on December 26, 2014
    I would recommend this item to a friend.
    A product that is easy to install..and works
    I had a problem with my ceiling for a number of years now and went to a store that sells stoves and asked him about my problem which was paint flaking off my ceiling. I have repaired it many times but to no avail. The man in the store stated that my smoke pipe is too close to your ceiling and then i asked him what he would put on the ceiling..he said Micore-300 Mineral Fiber Board.! and so i ordered it and installed it over my ceiling with screws going into the ceiling joists...
    ProsI was told that this item is put into the backs of stoves
    By Brad from Vermont on October 10, 2014
    I would recommend this item to a friend.
    Micore
    Just what I needed for custom hearth pad, best price, no problems.
    By Denis Lee from PA, United States on September 12, 2014
    I would recommend this item to a friend.
    Good price for hard to find Item
    I was installing a slate pad for under a wood stove and wanted to protect the original hard wood floors, century and a half old house. In my area this product is not carried in the hardware stores. They could order it for me but I would have to wait for the next USG shipment of drywall, maybe weeks. Both price with shipping and timing were better than any local store offered me. Very happy , pad and stove installed.
    ProsThe product is a heat barrier, it preforms as described. The time to delivery and price were what was exceptional.
    ConsNo cons.
    By Chris from Willsboro, New York on August 13, 2014
    I would recommend this item to a friend.
    Great product, Great Price
    I was already aware of the benefits of Micore for building my hearth but I was surprised to find it here for less than Amazon and the shipping was fast.
    ProsGood product
    ConsYou can't buy one sheet.
    By Theresa from Boise, ID on June 17, 2014
    I would recommend this item to a friend.
    High R value, light weight and easy to use.
    We installed a wood burning stove over hardwood floors in a house with a basement. Because of the weight of the stove we didn't want to add a lot more weight in the floor pad. It needed an R value of 1.5. By using the Micore 300 in place of many layers of durarock we achieved the R value we wanted without it weighing a ton. We used 1/4 " plywood and the Micore was sandwiched between the durarock. On top is ceramic floor tile. The Micore was easy to cut and light weight. I only gave it 4 stars because I thought it was pricy.
    By Dean Selzer from Valley Lee, MD on May 5, 2014
    I would recommend this item to a friend.
    Awesome Product and Fast Free Shipping!
    Micore board was exactly what I needed for my hearth!
    ProsR-value and Free shipping!!!
    ConsNone
    By cody from mi on December 16, 2013
    I would recommend this item to a friend.
    Great Product
    Exactly what I needed for my custom hearth pad and hard to find .
    By DW from MA on October 30, 2013
    I would recommend this item to a friend.
    Exactly What I Needed
    This product is fairly hard to find, but FS had it shipped to my door very quickly. My only caveat is that it comes in a large quantity. If it came in a package with half the coverage I would have given it 5 stars.
    By Kurt from Mt. Holly, NJ on October 12, 2013
    I would recommend this item to a friend.
    Great product
    If you need R value this is the product. Sandwich between two sheet of 1/2 Durarock and you can put any stove on it.
    ProsCan be shipped anyware
    ConsWould be nice to have a larger sheets.
    By Renee from Aztec, New Mexico on April 15, 2013
    I would recommend this item to a friend.
    Micore-300 Mineral Fiber Board completed our Wood Stove
    The product was easy to use and just what wee needed to complete our hearth for our wood stove. We had to abide by the codes since we put it into our manufactured home. I would recommend this product to others. The price was also in our budget.
    ProsIn our budget easy to use
    By Robert from (S. Indiana/Louisville, Kentucky on February 4, 2013
    I would recommend this item to a friend.
    A Complete Minimum Clearance Solution
    I bought this product so I could comply with my wife's request that our new wood stove be placed closely as possible against the wall and without a raised hearth. This product solved all of our clearance issues in as much as a one half inch thick sheet has the heat transference protection of nearly six inches of concrete!
    ProsGreat product with excellent heat transfer retardancy values.
    ConsThere was nothing that I disliked about the product itself. I was simply surprised that it was so difficult to locate. In that regard, I am especially grateful to this store for including it in its inventory of wonderful products.
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