Hardiebacker Cement Board Fire Rating

Use 5 8 inch backer board as a fire rated material similar to type x drywall.

Hardiebacker cement board fire rating.

Unless otherwise noted fire ratings apply to tests conducted on both sides. Durock cement board hardie backer 0 25 in. Unlike pure cement board hardiebacker s fiber is almost invisibly integrated into the board making for cleaner cuts. 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.

View top sellers in. The best backer board choice. Hardiebacker cement board is a portable fiber cement backer board that is composed of 90 portland cement and sand 10 cellulose. 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.

The hardiebacker board is made with a quarter inch thickness so that it can serve as fireplace facing. James hardie industries manufactures hardiebacker. Get free shipping on qualified fire resistant cement boards or buy online pick up in store today in the building materials department. On 2 x 8 common plate 3 1 2 thermafiber safb both cavities joints taped.

Hardiebacker is composed of 90 percent portland cement and. 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. Tile backer board brands hardiebacker. Hardiebacker board is generally noncombustible and the heat produced from the fireplace will not damage it.

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. Hardiebacker cement board hardiebacker cement board is the strongest easiest to use and is the most durable lightweight cement backer board on the market today. 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.