When installing 12mm cement backerboard on walls make sure that the entire construction is in compliance with the applicable regulation and that all remained dry lining is removed prior to installation.
Tile backer board on brick wall.
The various brands of cement board such as hardiebacker durock denshield and wonderboard have become a standard tile backer material for nearly all ceramic porcelain and stone tiles for floor wall and countertop applications.
Engineered to prevent damage to the sub floor or wall cavity if moisture seeps through grouted tile densshield tile backer is the first backer board with a built in moisture barrier.
It s the ideal ceramic tile underlayment for new construction bathroom remodeling pool areas and many other high humidity or wet areas 1.
Steps for tiling over a brick fireplace.
As a tiling backerboard hardiebacker does not require any primer and can be tiled onto directly after installation.
James hardie 0 42 in x 36 in x 60 in hardiebacker with hydrodefense technology fiber cement backer board.
A 50mm alkaline resistant fibatape should be added over the joints and the tiles installed onto the boards.
Hardiebacker is water resistant and fire resistant.
And is often used as alternative to plywood chipboord plasterboard as tiling backer board.
Unlike wood or drywall sub surfaces cement backerboard will not rot warp or grow mold and mildew when exposed to water.
Go over the entire area with a wire brush to dislodge any loose mortar then scrub off the soot with a rag soaked in white vinegar.
Never install new tiles over existing tiles or onto an unprotected wood or plywood floor.
Whenever you re laying tile on a wood subfloor you need to first install cement backerboard to prevent leaks and water damage.
Laying hardier backer board to brick walls does not need dot and dab boards need to be fix in stagger pattern 2mm joints with screws and wall plugs at least 9 screws per board then cover joints with cement tapes grey then cover cement tapes with thin sett adhesive this is the best way to have peace of mind.
Answered 26th feb 2017 like 24.