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Hearth Boards & Stove Boards

Hearth boards, also known as stove boards or hearth pads, are primarily used to insulate your floor from the heat produced by a wood stove or furnace. If you're interested in one of these appliances there's a good chance that you're going to have to install it with a hearth board in order to maintain safe clearances. But even if your stove doesn't require a hearth board, you may want to consider getting one to use as a hearth extension.
Ask & Answer
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By Billy from Ringgold, Louisiana on September 3, 2016
Can these hearth boards be modified by cutting a hole for an exterior fresh air supply? Which one would you recommend for this alteration? I have a Fisher Goldilocks stove that requires air to enter the center of the pedestal.
By Will M. on September 6, 2016

You should choose a stove board that matches the manufacturer's listed requirements for floor protection based on the dimensions of your stove. This information is normally located in the product literature for your stove. Once this is done, you may cut a hole in the center of any of the stove boards we offer to accommodate the fresh air kit. You should be able to accomplish this via an appropriately size diamond grit hole saw for masonry.

By Ray from Mooresville, NC on December 3, 2014
What material is the UL-1618 type 2-36x36 made of?
By eFireplaceStore on December 3, 2014

The board is constructed of USG brand Micore mineral fiber board, enshrouded in a 30 gauge steel jacket for appearance and strength.

By Brent from Hobbs, NM on August 24, 2014
I own a cast iron stove in a small cabin and it doesn't have a lot of room. Do I need a type 1 or 2 pad?
By eFireplaceStore on August 25, 2014

This model of stove does require a floor protector with an R value, so a Type 2 protector must be used. The Hy-C 36-inch x 52-inch Type 2 UL1618 Black Stove Board is the smallest factory built board we offer to the 27 by 51 inch floor protector requirements this stove lists. Anything smaller would need to be custom made.

By Carol from Raleigh, NC on December 27, 2014
We received a fire pit for Christmas and would like to use it on our wood deck. What do we need to put under a fire pit in order to keep it from damaging the deck? The only stove boards that we can find are for interior use. Would bricks stain the deck if we put them directly onto the wood?
By eFireplaceStore on December 29, 2014

Depending on the model of fire pit you received, something as simple as a layer of concrete pavers can be used. As you have found, most hearth pads are indeed designed for interior use and the insulating mineral board inside them does not do well when exposed to moisture. Concrete pavers with no colored dye added to them should not stain the deck.

By Joe from Arlington, TX on November 13, 2013
Is there a code for the hearth in front of my fire place? Can I just have my wood floor there? Does something else have to be there and does it have to be a certain size?
By Collin C. - NFI Master Hearth Professional on November 14, 2013

Per the UL 127 standard for wood burning fireplaces, a hearth extension must be used. For a fireplace with an opening of less than 6 square feet, the hearth protector must extend 8 inches beyond each side of the opening and 16 inches in front of the unit. For a fireplace with an opening of 6 square feet or greater, the hearth protector must extend 12 inches beyond each side of the opening and 20 inches in front of the unit.

By Lisa from Odessa, MO on September 20, 2015
Is the quality of Hy-C as good as more expensive boards?
By Will M. on September 21, 2015

While not as decorative as some of the other brands, the Hy-C stove boards will satisfy the UL 1618 Type 2 requirement and will provide safe floor protection.

By Fred from Bayse, VA on March 4, 2015
We have a wood burner that was used as a fireplace insert and is not used as a free standing firebox. We want to put something directly on the sides of the box and back to give it a finished look. Can any of these boards that are fireproof be used this way? If not, what would you suggest?
By Chris C. on March 4, 2015

These boards are more commonly used as a means of protection to reduce clearance requirements to combustible wall board or flooring material beneath free standing stoves. If you are looking to finish out around a fireplace, this would be better accomplished utilizing a non-combustible board such as Durock, and then finish atop it with a ceramic tile, granite slab, or other non-combustible finishing material.

By Barbara on November 9, 2012
I have a wood pellet stove and want to put a stove board under it. I see there are two types of boards, Type I and Type II. What is the difference? I see they are only 5/8” thick. Does that offer enough protection if the pad will be on top of a plywood surface?
on November 9, 2012

The answer to your question all depends on your stove and what the manufacturer of it requires. As far as the types are concerned, Type I boards are ember protectors only. They keep embers from landing on an adjacent combustible surface. Type II boards offer thermal protection in addition to ember protection. These boards have a higher R value.

By Nick on November 9, 2012
I have an antique parlor stove & will required a stove board 6' x 6' square. Do you carry anything in this size & if so, is it UL listed & what is the R rating?
on November 9, 2012

Unfortunately, the largest square pre-manufactured stove boards that we carry measure 48" x 48". This is because shipment of anything larger than this would have to be done by a specialty freight carrier. Most floor protection that is larger than this would need to be custom made on site, utilizing concrete board and tile or an equivalent noncombustible material.

By Paul on November 9, 2012
I need a floor pad measuring 48 x 60. I don't see that as a specific size. Do you have something close?
on November 9, 2012

While we do offer 48" x 48" and 36" x 52" boards, we do not carry anything that is larger than these dimensions. This is largely due to the shipping limitations of boards that are any larger than this. Most larger hearth pads must be site built out of concrete board and a ceramic tile or brick of your choosing.

By Loretta on November 9, 2012
We just bought a an antique parlor stove & code requires 18" of space around the stove itself. I'm looking for a stove board that would be 5-1/2' square. Largest size I see you have is 4 x 4. Can you help me please?
on November 9, 2012

Unfortunately, you are correct. We do not currently carry a stove board larger than 48" square. Further, we do not customize any of our products. We apologize for the inconvenience.

By Merrilyn from Lacey, WA on September 4, 2013
We would like to use a hearth pad, but the Enviro stove requires venting through the floor of the mobile home. Can we cut a hole in the pad to accommodate the requirements?
By Tyler M. - NFI Certified Specialist on September 4, 2013

We do not recommend cutting into the stove boards or hearth boards. Doing so with compensate the effectiveness of these boards and cause potential issues with thermal and spark protection.

By Evelyn from Ohio on April 28, 2014
Are either ok to use on the wall behind the woodstove? What is the difference? I need something about 36 x 52".
By Collin C. - NFI Master Hearth Professional on April 29, 2014

The terms hearth board and stove board are often used interchangeably, although a hearth board by definition is a short and wide board that serves as an artificial hearth extension for a fireplace, while a stove board is larger and designed to shield the floor beneath a free standing stove. Stove boards can certainly be used to shield both a combustible floor or a wall. We offer several shades in the 36 x 52 inch size range, such as the Hy-C 36-inch x 52-inch Type 2 UL1618 Black Stove Board, the Hy-C 36-inch x 52-inch Type 2 UL1618 Gray Slate Tile Stove Board, and the Hy-C 36-inch x 52-inch Type 2 UL1618 Sandstone Stove Board.

By Judy from Madras, OR on November 30, 2012
Can I just order the framework for the hearth pad, so I can put my own tile in it?
By Collin C. - NFI Master Hearth Professional on December 3, 2012

Unfortunately, no. The metal frames for the hearth pads we sell are cut and welded together on site by the manufacturer. It would be necessary to purchase angled steel to construct your own frame or have a local fabricator cut the steel components to the required size so that they could be screwed or welded together on site.

By Tom from Milwaukee, WI on November 30, 2015
I bought a Napoleon Timberwolf 2100 Economizer from you and need to set it up with a hearth or stove board. If I understand the recommendations in the specifications, the board would have to be 48" deep by 42 inches wide, which seems very large for a small stove. Did I miss something here? What size board would you recommend?
By Will M. on December 1, 2015

Your calculations are correct and I would recommend a 48" x 48" stove board as this dimension will be readily available.

By Karen Walker from Washington, DC on February 26, 2013
Do you make/sell hearth boards (48 X 48) with an R Factor equal to or greater than 2?
By Tyler M. - Fireplace Specialist on February 26, 2013

Yes, we have one 48" x 48" stove board that has an R-value of 3: R-CO 48-in. x 48-in. Double Cut Brick Stove Board

Our other 48" x 48" boards have varying R-values, though none are greater than 2.

By Dan from Cedar City, UT on July 23, 2013
What are the dimensions for the corner pad that is 40 x 49? Is the long side 49" and the short cut side 40"?
By Magan B. on July 23, 2013

The length is 40" and width is 49".

By Steve from Denver, CO on June 14, 2014
What is the difference between type 2 stove board and 1 UL stove board? I need to protect a wood deck from an outdoor wood portable fire pit.
By eFireplaceStore on June 16, 2014

Type 1 stove boards offer ember protection only. They are excellent for protection against falling coals or even a log that rolls out of position, but they do not offer any kind of thermal insulation. Type 2 stove boards offer ember and thermal protection. They will utilize a layer of built in material, usually mineral board, which helps to shield the area below from excessive heat. If the fire pit is low to the ground and could potentially damage a combustible surface beneath it, the Type 2 board would be the product to use.

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