$79. 1/2 drywall. This stove board can be wall mounted with a Stove Board Spacer Kit to protect walls from heat, reducing the clearance between the appliance and combustible materials by as much as 67% to a. If you need further support, you can call us at 1-800-544-1307 Mon-Fri. The most common way to protect floors around a woodstove is by adding a hearth pad. This batting blanket material is found above the fiberboard plates in the top of your stove. x 39. 99. It can be used as part of a hour-long fire wall, which is a wall that can resist a fire for up to an hour when properly constructed. Can be used with a Stove Board Spacer Kit to protect walls from heat reducing the clearance between the appliance and combustible materials by as much as 67% to a minimum of 18. 15% coupon applied at checkout Save 15% with coupon. Once the wall is prepared, it’s time to install fireproof insulation. #2. We Offer A Price Match Promise – Our vermiculite fireboards provide fire resistance, insulation and thermal stability. 81. 98 (1007) Saint-Gobain ADFORS. 592 ( R-value information ), it provides protection well above the minimum requirements for Type 2 hearth pads (minimum requirement of R-value=1. Lynn Manufacturing Replacement Buck Stove Fiber Baffle Board, Model 51 and 74, POBPFB74, Single, 2677A. Browse our fire resistant boards suitable for drylining, wall lining & ceiling systems where increased fire protection is needed. L. Wood fire stoves can often also come with optional heat shields or firebacks, which will help to protect the building material behind your log. We like the look of the stone fireplace but we lose a lot of heat to the outside. Find My Store. Hardi cement board is an inexpensive solution that will form the foundation of an effective heat shield for any application. 47" x 12" x 24", Pack of 1, Fireproof Insulation Board for Wood Stoves, Pizza Ovens, Forges, Kilns, Furnaces, Fireplaces 10 Pcs Ceramic Fiber Paper 11 x 12 x 0. Join Prime to buy this item at $22. The metal building has plastic backed fiberglass batting. Sheet metal is possibly the easiest heat shield material since metal is a cheap and effective conductor of heat and there are many prefab metal heat shields that can be bought and assembled with minimal construction. 2 out of 5 stars 15. Shop this Collection. Fireproof boards are lightweight and can be processed with traditional wood tools. Available in different sizes and types. Shop this Collection. 4. 2 inches : Package Weight 5. Call Us Now: 08455 208880 01264 586778 Email: info@enviroboards. It can be used to cover the wall around the fireplace opening, and it can also be used to frame the opening itself. 215 Mini Pellet Stove, 800 Sq Ft - F500215. Keep the stove away from nearby combustible materials. Another excellent idea is to line the area around your wood-burning stove with brick. 1174. This is a Type 1 Panel with non combustible substrate. 01256 889 397. Push up the plate’s front edge. ft. register plates, or replacement fire bricks for wood burning or multi-fuel stoves. For maximum protection behind the bricks, I recommend fire rated plaster board sheets such as Gyprock CSR 3600 x 1200 x 13mm Plasterboard Fyrchek. Metal is commonly used because installation is faster than the other types of shield. Step 1. Product Details. 95. website builder. It’s applications include in fireplaces, stoves, heaters, boilers, vessels, tanks, or wood-fired ovens. Qty Out of stock. Simond Store Ceramic Fiber Insulation Board, 2300F Rated, 0. 0 out of 5 stars 3. Or fastest delivery Sat, Sep 9 . #1. 8 out of 5 stars 73. Now after heating the stove up a few times. This stove board can be wall mounted with a Stove Board Spacer Kit to protect walls from heat, reducing the clearance between the appliance and combustible materials by as much as 67% to a. W X 32 in. Vermiculite Fire Resistant Board -Fire-proof Insulation VITCAS Fire-proof Insulation Board Refractory to 1100ºC (2010ºF). Dark wood stove cover board with handles. The board was first mounted to the wall using 1 1/2" stand-offs - essentially small metal tubes that acted as spacers, though a non-heat-conducting stand-off would have been. Cover that paper with tile or steel, and that's a cinch to comply. 50+ bought in past month. 90Fire Pit Mat - 39''× 39'' Fireproof Stove Grill Mats Blanket for Wood Deck Insulation, Camping BBQ Temperature Resistant Rugs Accessories for Outside Indoor Lawn Protection - Camel. 5% coupon applied at checkout Save 5% with coupon. Such board is a lightweight refractory material being fabricated from alumina-silica fibers, and is extensively used in high temperatures atmosphere that is as high as 1430℃. com FREE DELIVERY possible on eligible purchasesThis item: VICASKY Fire Pit Mat Square Fireproof Firepit Pad Heat Resistant Wood Shield Concrete Floor Grass Patio Mat Deck Protector for Under Grill Stove Chiminea. Other styles, materials, or shapes. HY-C T2UL3652BL-1C Stove. Thread Starter. , a 6-inch pipe needs 18 inches of clearance. We manufacture and supply refractory cement and mortar, fire bricks, insulating boards and blankets, heat resistant rope, tape, paints and adhesives, and more. On the ground and drywall, use thinset and screws to attach the cement board. Shop today!Lynn Manufacturing Kaowool Ceramic Fiber Insulation, 1" Thick x 16" x 48", 2400F Fireproof Insulation Blanket, 3026E. Originally published as "Old. 33 pounds : Manufacturer : Lynn Manufacturing : ASIN :Brick and stone absorb heat and release it slowly, unlike other materials like metal, which heat fast and retain the heat. The ignition temperature can drop to 200 to 250°F. You must fireproof the wall behind a wood-burning stove for several reasons. Vitcas Vermiculite Fireproof Board with Brick Pattern. Alibaba Construction & Real Estate Fireplaces & Stoves Fireplaces Wholesale fireproof boards for fireplace. HardieBacker 1/4 in. A “combustible material” is any material that is not A1 fire-rated or to as high a specification as this (your sofa and that wooden beam are definitely combustible materials!). Dundee Deco. $67. Fire Pit Mat - 39''× 39'' Fireproof Stove Grill Mats Blanket for Wood Deck Insulation, Camping BBQ Temperature Resistant Rugs Accessories for Outside Indoor Lawn Protection - Camel. Ceramic Fiber Insulation Board, 1" x 12" x 24", 2300F Rated, Fireproof Insulation Board for Wood Stoves, Fireplaces, Pizza Ovens, Forges, Kilns, Furnaces - Pack of 1 4. FREE delivery Thu, Nov 2 . Plasterboard is officially a combustible material. These include items like cardboard, magazines, boxes, wrappers, pressure-treated wood, and even natural items like ocean driftwood. 7" x 39. 5mm. Limitless Applications: Ceramic fiber insulation board used in various types of heating equipment such as Wood Stove, Fireplaces, Pizza Ovens, Kilns, Forges, Internal Baffle of Wood Stove, Pellet Stove, Backup Insulation of Refractory Bricks and Castable Linings, Furnace Hot Face Linings and Boiler Wall Insulation, heat shields, combustion. 56 $ 65. #1. L Slate Stove Board. Ceramic Fiber Insulation Board, 1" x 12" x 24", 2300F Rated, Fireproof Insulation Board for Wood Stoves, Fireplaces, Pizza Ovens, Forges, Kilns, Furnaces - Pack of 1 4. Shop By Brand. Min Order: 100. 5"wide x 1" thick (Dimensions may vary slightly) If your current fireplace firebrick lining has cracks of 1/4" or more, you should replace the panels for safety reason. Heat shields may be used to reduce the clearance by the same ratio as for the stove. Imperial Manufacturing BM0408 32 x 28 in. People commonly use stainless steel as a heat shield. 1-48 of 113 results for "fire board for wood burning stove" Results. The compact size is perfect for fitting in tight spaces. 50+ bought in past month. 0 kilograms. The SkamoStove insulates the stove and increase combustion temperature, which provides a cleaner burning process and a more efficient use of the wood. Using this setup should give you excellent heat retention and reflection from the wood stove. For example, with sheet metal you can reduce the clearance by two-thirds, from 18 inches to 6 inches. com: SIMOND STORE Ceramic Fiber Board, 2300F Rated, 1" x 19. 5. Best ceramic fiberboard | Ceramic insulation board. It looks great and cleans easily. DuraVent Gray Pellet Vent 90-degree Elbow. 7 Inch X 39. ANSWER – Ceramic tile behind a woodstove works very well as long as it’s installed correctly over the right type of substrate. Type 2 floor protection stove boards are rated with an R-Value. co. Select the department you want to search in2 Pcs Ceramic Fiber Insulation Board 12'' x 8'' x 0. Received 793 Upvotes on 696 Posts. Only 2 left in stock - order soon. Cucina Green 30 Inches Noodle Board Stove Cover & Cutting Board - Acacia Wood. 20 gauge steel construction. 90. 6 out of 5 stars 17. or Best Offer. 4. ft. The HY-C Type 2 stove board protects floors from the intense heat, hot coals, ashes and soot stoves or fireplaces can produce. Additionally, 6 inches of clearance must be left between any wood stove pipes and the combustible surface. W X 36 in. Step 6. These gas options can come with gas ovens as well and are still the most popular option around the world because it does not require an electric connection and many recipes require an open flame that electric cooktops cannot. It is easy to cut and shape to fit your needs. Plasterboard is officially a combustible material. 99 $. Our smallest stove, the Dwarf 3kW, is a great option for smaller tents and milder climates where less heat is required. The television might be the most-watched object in the home, but the fireplace still remains the heart of it. Ceramic or Cement Board Heat Shields; For these types of heat shields, the same clearance (25mm) recommended for metal-only. 4 Inch, 2300F Rated, Fireproof Insulating Board for Wood Stove Fireplace Pizza Oven Kiln Furnace Forge Hearthstone Dishwasher - Pack of 1. Fire proof board is also called fire-resistant board. Fireproof Wall Panels for Wood Stove. Amazon. 100+ bought in past month. 999 posts · Joined 2007. These protective insulating boards make a great addition to homemade stove boards, fireplace framing, and more. A door with a seal. With its Type 2 UL 1618 rating, this Imperial 36-in x 48-in stove board has an R-value of 1. $54. Some of the options include brick, stone, faux panels, cement board, and more. Heat shields work by creating a barrier, and deflecting heat back into a room. I suppose those dimensions include the feet and little rail around the top. 47 x 18 x 24 inches. Now here's where you need to make a few. Hold the piece of backer board against the wall. The adhesive can be used for gap filling as well and has a good working time. Pack of 1 - Ceramic Fiber Thermal Insulation Board for Wood Stoves, Ovens, Forges, Kilns, Furnaces, Fireplaces. Type 2 Thermal Protection is used for wood stoves that have not been tested to sit directly on a combustible floor. 2 x side panels 985mm high x 450mm wide. FREE delivery Tue, Oct 24 . 30. Overall Pick Simond Store Ceramic Fiber Insulation. 3 out of 5 stars 99 $52. x 5 ft. Attach ½-inch Hardi cement board directly to the 2-inch by 2-inch by 8-foot pieces of lumber using 1-5/8-inch backer board screws. The woodstove I'm looking at says this in the manual: A combustible floor must be protected by a non-combustible material (like tile, concrete board, or certified to UL-1618 or as defined by local codes) extending beneath the heater and a minimum of 6" from each side and minimum 16" from the front face of the stove and minimum 6" (or the rear. 6" x 35. 52. g. Vermiculite board also provides. Measure the area where you’ll be installing the insulation and cut the insulation to size. 9 out of 5 stars 75. Cleveland Iron Works No. Fireproof Insulation: Vacuum cast ceramic fiber refractory board rated to 2300 F(1260 C). Posts: 45,458. 00. Yes, you can use cement board as a heat shield. pink plasterboard might be. x 300 ft. The HY-C Type 2 stove board protects floors from the intense heat, hot coals, ashes and soot stoves or fireplaces can produce. The experts at Fama Creations designed and installed this wall using aged wood reclaimed from an old horse barn dating back to the 1800s. VITCAS CS Fireplace Construction Board is an insulation board resistant to 1100°C / 1830°F. Fire-resistant mats. 88The vermiculite boards owns the all benefits and plays an important role in the stoves applying especially in wood stoves and pellet stoves. Jan 27, 2009. 42 in. And our durable vermiculite boards with longer working life can resistant the bending and crushing which caused by long time uneven heating, bring the stoves longer service life and less trouble for the. Their embossed pebble-finish steel is scratch resistantFor wood or gas stove customers looking for floor protection but are on a budget or do not want to spend a fortune, Friendly Fires has economy hearth boards that may work just fine. 2 out of 5 stars 15 $52. 7" x 39. The things that burn well in a wood stove, in addition to wood, are: • Crumbled up newspaper. Clearances far stove and stovepipe from walls and floor. Ceramic Fiber Insulation Board, 1" x 12" x 24", 2300F Rated, Fireproof Insulation Board for Wood Stoves, Fireplaces, Pizza Ovens, Forges, Kilns, Furnaces - Pack of 1 Visit the SIMOND STORE Store 4. Heat Barrier Made of Brick and Stone. Est. More like 19 inches. Do one wall at a time, and mark the line all the across the board. team@stoveworlduk. 62 Kilograms : Item Dimensions LxWxHThis protective stove board helps to protect walls and floors from the intense heat, hot coals, ashes and soot that a woodstove can produce. 4", 2300F Rated, Fireproof Insulation Board for Wood Stoves, Pizza Ovens, Forges, Kilns, Furnaces, Fireplaces - Pack of 1: Firing Accessories - Amazon. 6 x 29 x 1. These stove boards protect. 9 watchers. More Options Available $ 19109. DuraVent Gray Pellet Vent 45-degree Elbow. In addition to the usual gypsum found in regular drywall, fire-rated drywall contains glass fibers to form a super-tough core. $28. The Imperial Type 2 Stove Board protects walls and floors from the intense heat, hot coals, ashes, and soot that woodstoves can produce. Please note that each state and council has its own rules and regulations for fire safety. $66. It can withstand up to 2300 F and has a low thermal conductivity. Logwood 900 sq. Sep 28, 2011. The Hardiebacker board is made with a quarter-inch thickness so that it can serve as fireplace facing. Apply screws every six inches. That’s why I decided to take matters into my own hands and find ways to fireproof my walls. Cut each board to width so seams will land directly over one of the 2-inch by 2-inch by 8-foot pieces of lumber. uk Web: Prices. It’s a non-combustible decorative fireproof board which does not contain any gypsum. Nelson DIY pine shims are handy for numerous household projects. The HY-C Type 2 stove board protects floors from the intense heat, hot coals, ashes and soot stoves or fireplaces can produce. 4'' Fireproof Insulation Board, Flame Retardant, Heat Resistant, High Temperature Insulation for Wood Stoves Fireplaces. Shop Wayfair for the best fireproof stove board. (Thick)Ceramic Fiber Blanket Fireproof Insulation Baffle Rated to 2400F, High-Temperature Resistance. £199. The rock or masonry material should be no less than 2 inches thick in all places. com: stove board for wood burning stove. It’s a good starter material for getting a fire going. 4" - Pack of 1 - Ceramic Fiber Thermal Insulation Board for Wood Stoves, Ovens, Forges, Kilns, Furnaces, Fireplace, Dishwasher Insulation at Amazon. Don’t care what it looksHigh Temp Plasterboard. , a 6-inch pipe needs 18 inches of clearance. 99. $11090. Operating temperature of 167ºF-392ºF. Clear all. Free 4 day shipping. STEP 4. 5" x 1. Fire Resistant Insulation Board for Wood Stove Fireplace Pizza Oven Kiln Forged Hearthstone Dishwasher,600 * 400 * 20mm. How do you fireproof a wall behind a wood stove? Bare wood or sheetrock walls around a wood stove are fire hazards. Attach the shielding using the heat proof adhesive and a couple of screws to hold it in position until the adhesive cures. 2 individual sheets / boards of Size 600mm x 600mm x 25mm – Quantity: 2 sheets / boards. Imperial 32 in. High Strength LITE Drywall Board can be used for walls and ceilings in non-fire rated single layer. See Details. Trustpilot. 5 out of 5 stars 138. The woodstove I'm looking at says this in the manual: A combustible floor must be protected by a non-combustible material (like tile, concrete board, or certified to UL-1618 or as defined by local codes) extending beneath the heater and a minimum of 6" from each side and minimum 16" from the front face of the stove and minimum 6" (or the rear. 4. Gas cooktops use LPG to create a fire that cooks the food. 2 cm), the US Stove Company Fire Brick is a thoughtful addition to your heating system, encouraging a better distribution of warmth. Cleveland Iron Works Ash Vacuum Cleaner Black Wood and Pellet Stove Cleaner. The use of a heat-resistant layer on top of the backer board makes it easier to lift and distribute heat, while protecting the floor at the same time. 88 $ 52 . 2%. for reliable heating when burning seasoned cordwood. Stainless steel is often used, but copper is also an option. Sprayed polyurethane foam will start to burn at about 650 degrees Fahrenheit, which is within the range of a wood stove's chimney temperature. 🔥5 Star feedback and FAST Delivery! LARGE UK STOCK🔥🔥. Figure 2. Like | 2; Save; Antoinette Arsic thanked Lehman Design Studio. Gypsum Plasterboard 5. This simple protection can save you and your family from a tragedy. FREE delivery Mon, Nov 20. Fireplace lining for multifuel stoves and more. Thermal floor protection types are manufactured in the form of a stove board. The result is a superior board that is lighter in weight, sag resistant, and easier to handle. Heat-Resistant to 150°C. Compare. White 1. 400+ bought in past month. Get it as soon as Tuesday, Nov 28. Refractory to 1100°C (2010°F) with very good insulation properties for indoor or covered applications including fireplaces, stoves, heaters, range cookers, boilers, night storage heaters, vessels & tanks, hobby kilns etc Vermiculite is a naturally occurring non-toxic, asbestos free aluminium-magnesium silicate material. 4. 5/8 drywall. Shop wood & pellet stove accessories and a variety of heating & cooling products online at Lowes. 6"), Fireproof Insulation Board for Wood Stoves, Pizza Ovens, Forges, Kilns, Furnaces - Pack of 1 Visit the SIMOND STORE Store 3. CompareHigh density (700 kgs/m3) heat resistant vermiculite fire boards used by the trade! These boards are easy to cut down with a wood saw or jigsaw and are ideal replacements for broken, crumbled fire bricks inside woodburning and multi-fuel stoves. 1/2-in x 4-ft x 10-ft High Strength LITE Regular Drywall Panel. 4", Pack of 1, Fireproof Insulation Board for Wood Stove, Furnace, Forge, Kiln, Oven, Fireplace Heat Shield Simond Store Ceramic Fiber Insulation Board, (2300 F) (1" x 18" x 24"), Ceramic Thermal Insulation Board for Wood Stoves Fireplaces Furnaces Forges. When installing a wood stove, it is important to ensure that there is proper clearances between the wall and the wood stove. 47" x 12" x 24", Pack of 1, Fireproof Insulation Board for Wood Stoves, Pizza Ovens, Forges, Kilns, Furnaces, Fireplaces. It protects floors fro intense heat, hot coals, ashes and soot that wood and coal stoves can produce. Self-Adhesive Mesh Drywall Joint Tape. Vermiculite is a naturally occurring non-toxic. This six-pack of 4-1/2 in. Vitcas® Heat Resistant Tile Adhesive is a ready mixed tile cement acting as a wet adhesive for fixing tiles in any indoor high temperature condition. The room’s carpet must be removed before the pad can be installed. Follow your pencil line and drive screws every 4 to 6 inches. 5 Gallon Ash Vacuum Cleaner, Black - F500520. I assume you mean pine wood boards when you say “common board”. Use insulated chimney sections inside and outside of boat. Cement board offers an insulating property, which makes it great to help keep heat from escaping a space or from entering a space that you don’t want it to get into. Whether you're a DIY enthusiast or a hardworking contractor, Nelson Shims provide you with the quality and consistency you need. Hardiebacker is a good choice because it is resistant to excessive moisture and it has a high fire rating. Muros Wall Panels are robust and fire resistant, however they are not designed to withstand strong, direct or constant heat. 99. 17 More buying choices $60. team@stoveworlduk. x 1-1/2 in. com. 40. 99. Stove boards are designed to withstand thermal heat and come in different sizes to complement the size of your stove. 5 out of 5 stars 441. A wood burning stove typically contains: A firebox. Pay $14. 1; 2Protect your wood and vinyl flooring from your wood burning stove with a hearth pad. Made of refractory cement, the material is designed to withstand temperatures and should be replaced on a regular. Ash Vacuum Cleaner Stainless Steel Wood and Pellet Stove Cleaner. #2. 65 (inc VAT). 7" x 39. Thinking it would disappear, I installed it as planned. Firebrick Universal Fit (6-Pack) (303) Questions & Answers (106) Hover Image to Zoom. 5/8-in x 4-ft x 8-ft Fire-Shield PURPLE XP Mold Resistant Moisture Resistant Type x Drywall Panel. 4 out of 5 stars 40 ratings-8% $22. See our inspiring fireplace projects. 1. Start Now. Compare. Simond Store Ceramic Fiber Insulation Board, 2300f, 1 Inch X 12 Inch X 24 Inch, Ceramic Thermal Insulation Board for Wood Stoves Fireplaces Furnaces Forges Kiln Pizza Oven. We want to get the stove (Woodstock Fireview) as close to the wall as possible and have been advised by Woodstock that one of the things we need is a 1" air space Wonderboard. The benchmark temperature, which determines safe clearances, is typically 115 degrees F over the ambient room temperature. com is THE place on the internet for free information and advice about wood stoves, pellet stoves and other energy saving equipment. replacement ceramic fire bricks can be used in any brand of wood or coal stove that uses this standard sized brick. The EPA includes particleboard in its list of woods that should not. I currently have a piece of leftover underfloor heating insulation, with. The construction is embossed printed steel over a 1/2" thick specially formulated fiber board which is non-combustible. For decades our decorative wall panels have been used safely near appropriate wood and gas fires. 00 $ 100. Keep a distance of at least 150mm / 6 inches around the side of the burner. S. 5" deep. Add To Cart Flame Bond heat Resistant Sealant use with. Amerbro Heat Resistant Stove Top Covers for Electric Stove - 21×29. Buy 39" x 39" Fireproof Mat For Fire Pit Mats For Under Fire Pit Mat Grill Mats For Outdoor Grill Deck Protector Fire Mat Deck Patio Wood Stove Bbq Camping Tent Lawn Resistant Floor Heat Pad Proof Blanket at Amazon. Black Friday Deal. Small Business. Then it best protects the back wall. 82. This item Simond Store Ceramic Fiber Board Insulation, 2300F Rated, 2" x 19. Buy Simond Store Ceramic Fiber Insulation Board, 2300F Rated, 0. A wood stove hearth or a stove board is made from a variety of fire-resistant materials. Making a metal shield with spacers will reduce how much heat gets to the ceiling, but unless your ceiling is low, I don't imagine it'll be necessary. Very High Quality, Smooth, High Density Vermiculite board – quantity 2. Overall Pick Simond Store Ceramic Fiber Insulation Board - 2300F Rated - 0. Delivering to Lebanon 66952 Choose location for most accurate options All. Thick x 24 in. Adequate floor protection, or an approved hearth pad, is critical to a safe wood burning stove installation. Embrace the Seamless Hearthpad Look. GROUP USA Stove Board. Fireproof boards are an essential component in the construction of fireplaces and stoves. Step 2 : Install Fireproof Insulation. SBI's high-quality materials are among. Small Business. ft. Dimensions. 99 £29. Optional 5/8" thickness is also available. We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense,. How to Make Pads for Wood Stoves Backer Board Foundation. Lynn Manufacturing Universal Baffle Board, Superwool, 2100F, 21'' x 11-3/4'' x 1/2'', for Wood Stove, High Temperature Rated, Ceramic Fiber Alternative, Rigid, 2250A. Have a look at Moistsure board, I use it primarily as a tile backer board but have also used it as a register plate above our wood burner and found 6mm off cuts brilliant for surface protection when soldering copper pipe. 99 Cement board, such as Hardiebacker, is a good option for this. $24. 46 FREE delivery 25 - 30 OctFirst, remember the basics. sheetrock drywall sheet. Ideal for wood burning stoves which are easy to cut to make your own fire bricks and are available in a number of thicknesses. 30 $ 63. So, yes, you can use cement board behind a wood stove, in fact, it is highly recommended that you do – for your safety and the planets. ZUZU Babe Fire Pit Mat for Deck Fireproof, Outdoor Wood Stove Hearth Pads, Camping BBQ Mat with Fire Retardant Material to Protect Your Deck Patio Lawn Campsite from Fire Burn. The pan can be directly exposed to a stove's flame and not burn, yet the food in the pan will cook in time. 99 Members Save: $1. 4 in. Fig. Model #A11240848096. kenreich. STEP 2. 0 pieces. The tall firebox, airtight controls, and secondary burn technology give the Dwarf 3kW stove the longest burn time in the 3kW size. 5"x8. Spread a coat of heat-resistant epoxy mortar on the backerboard. 99 Smokey Grey Slate 48" x 48" Double Cut Hearth Pad $799. Cleveland Iron Works No. 99 $ 126. g. At least one inch of air space must exist between the sheet metal and the wall, and the substance used as a spacer between the metal and the wall must be non-combustible. They may also. 4. 4.