Cement Board Vs Drywall Fire Rating

Hardiebacker board is not designed to take the place of stone drywall or other materials used near or on your fireplace.

Cement board vs drywall fire rating.

Around a fireplace you can use hardiebacker board to prepare an area for tile installation either stone or ceramic. To receive the type x designation a gypsum board must achieve at least a one hour fire resistance rating for 5 8 inch board or a 3 4 hour rating for 1 2 inch board in a single layer nailed on each face of load bearing wood framing members. Durock durock is manufactured in sheets with a thickness of anywhere from 1 4 to 5 8 inch a width of 32 36 or 38 inches and a length between 4 and 10 feet. Hanging drywall is not difficult if you have patience the right tools and.

Drywall by john vann. Blue board drywall is not made for mud tape or paint. Usg durock brand 1 2 in. Such materials include drywall also known as sheetrock and durock also known as cement board.

Two hour fire rated construction chase walls steel framed acoustical performance construction detail description test number stc test number 9 1 2 usg durock brand cement board and 1 4 ceramic tile two rows 2 x 4 wood studs 16 o c. Thermafiber safb sheetrock firecode panels r ul des u329 durock cement board systems ny sa932 5. As added benefits type x absorbs sound slightly better and is slightly stronger than conventional 3 8 inch or 1 2 inch drywall. Instead it was designed to be a subfloor or backing material for another material installed on top of it.

Also because it is denser than normal gypsum and paper drywall it takes longer for the fire to degrade it. On 2 x 8 common plate 3 1 2 thermafiber safb both cavities joints taped. Most type x drywall has a one hour fire rating. Cement board with edgeguard model 172954 view the tile backerboard collection 10 97.

Glass fibers are added to the board to help it retard fire. Yes hardiebacker 1 4 cement board is deemed noncombustible when tested to astm e 136 and can be used in conjunction with other noncombustible materials around a fireplace. Fire rating of durock vs. This does not mean that clearances to combustible building materials can be reduced by using hardiebacker 1 4.