Constructing the heat shield itself is a relatively easy process.
Durock cement board for fireplace.
They screwed each panel into the wood frame with cement board screws as well as the corner bead to keep the edges and seams sharp and clean.
Hardi cement board is also designed to have ceramic porcelain or stone tiles installed over it to cover and beautify the heat shield after it is installed.
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.
After some research and looking online for inspiration i decided to use a piece of metal schluter for the edges on the inside of the fireplace.
Board is readily applied over wood or steel framing spaced 16 in.
The hardiebacker board is made with a quarter inch thickness so that it can serve as fireplace facing.
Once i figured out to add cement board to the fireplace surround i was a little worried about the edges of the cement board showing when it was installed.
The fireplace manual should specify how far around it you need fire resistent typically cement board or steel board typically it is only for the top.
Cut the cement board pieces to size.
Proper installation for fireplace tile cement board.
Durock brand cement board with edgeguard offers architects builders and tile contractors a strong water durable tile backerboard for floors walls countertops tub shower areas and exterior finish systems.
Cement board on the fireplace surround.
Fireplace surround plywood or durock cement board.
On center with corrosion.
Hardi cement board is an inexpensive solution that will form the foundation of an effective heat shield for any application.
Use these measurements to mark where the cement board must be cut.
Place a straight edge along the areas of the cement.
Hardiebacker board is generally noncombustible and the heat produced from the fireplace will not damage it.
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.
Durock cement board technical bulletin september 2004 cement board wall shields and floor protectors for ul listed solid fuel room heaters and stoves protects combustible walls and floors asbestos free yet highly fire resistant reduces required wall clearances by one half available in 6 convenient sizes for minimal cutting 3 x 4 5 and 6.
Also an ideal underlayment for tile on floors and countertops in new construction and remodeling.
Because the pollios didn t have existing drywall or a mantel to work around they went straight for the durock cement boards that are also typically used as backers for tile or stone.
Usg durock brand cement board with edgeguard offers architects builders and tile contractors a strong water durable tile base for tub and shower areas.
I d use at least a foot of cement board to be safe if you can t find the spec.
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.