Hardiebacker Cement Board Fire Rating

Hardiebacker board is generally noncombustible and the heat produced from the fireplace will not damage it.

Hardiebacker cement board fire rating. The exact fire rating of durock is dependent on the other materials used during construction but a panel 1 4 or 1 2 inch thick typically provides an additional hour of fire protection. Get free shipping on qualified fire resistant cement boards or buy online pick up in store today in the building materials department. Unless otherwise noted fire ratings apply to tests conducted on both sides. Hardiebacker is composed of 90 percent portland cement and.

Hardiebacker cement board is a portable fiber cement backer board that is composed of 90 portland cement and sand 10 cellulose. Hardiebacker cement board hardiebacker 1 4 board hardiebacker 250 cement board hardiebacker ez grid cement board hardiebacker 500 cement board hardiefloor wet area solution. The hardiebacker board is made with a quarter inch thickness so that it can serve as fireplace facing. Unlike pure cement board hardiebacker s fiber is almost invisibly integrated into the board making for cleaner cuts.

Tile backer board brands hardiebacker. 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. Durock cement board hardie backer 0 25 in. View top sellers in.

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. This does not mean that clearances to combustible building materials can be reduced by using hardiebacker 1 4. 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. 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.

On 2 x 8 common plate 3 1 2 thermafiber safb both cavities joints taped. The best backer board choice. Use 5 8 inch backer board as a fire rated material similar to type x drywall.