Remember to lay the sheets broken bond or brick pattern. Subsequent sheets are fixed in the same method. Fixings can be either 30mm galvanised roof nails or HardieBacker screws. Fixings are 15mm from edges and 50mm from corners of sheets. Sheets are nailed through the body of the board (there are marker guides on the EZ-grid to help) and around the perimeter at 200mm centres. Note: the adhesive is used as a gap filler only and is no required to attach HardieBacker boards to the sub-base- this is carried out by the application of the mechanical fixings. Sheets are then pressed into the bed of tile adhesive. Sheets must be laid with a 3mm gap from all walls, vanities, baths etc. Applying too much adhesive may result in the adhesive drying out too fast. Make sure that only enough tile adhesive is spread out for a sheet at a time. Spread the tile adhesive across the floor with a 6mm notched trowel. The tile adhesive levels out any minor deviations to allow for a well supported evenly tile backer substrate. HardieBacker 250 Cement Board is bedded into a tile adhesive compound. Step 1: Preparing the bed for the HardieBacker Cement Board HardieBackerâ„¢ cement board is an ideal solution for wet area floors, walls, and countertops. HardieBacker Cement Board keeps your tiles just where you want them. James Hardie is the world leader in fiber cement siding and backerboard and HardieBacker Cement Board is now stocked here at Greengates Builders Merchants Accrington, Lancashire.
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