What kind of screws do you use for cement board?Ĭement board attached to plywood or similar underlayment will hold with only 1 1/4-inch screws for thick or heavy metal fixtures, use 1 5/8-inch screws. Use ITW’s ROCK-ON and BACKER-ON screws instead. They can corrode, they can break down the edges of the boards, and they won’t drive in flush properly. You don’t want to use regular drywall screws for cement boards. Can you use drywall screws for cement board? … It is important to highlight that screws shall not be installed all the way down to the floor joists. All of your backer board pieces should be cut before they are placed on the floor. Screw and Joints Do not use drywall screws as they are not recommended to be used to hold the backer board in place. Backerboard is usually installed rough side out when used under a thin-set mortar for slate or ceramic tile flooring, and smooth side out when it is a base for adhesive-set wall tile. Should I install cementitious backerboard (Durock, Wonderboard, etc.) with the rough or the smooth side facing out? A. If you’re using our quarter-inch board, you can score along the provided grid lines. Score along your straight edge, applying firm pressure as you go. Place your HardieBacker Cement Board on a flat surface and mark your cuts with a straight edge. Which side goes up, smooth or rough? Either is acceptable, but we recommend that the smooth side with the nailing pattern of every 8″ on center go up. Does it matter which side of Hardibacker board faces out? The back of cement board is plain, has no manufacturer-defining stickers and is void of the front-featured grid. … Also, cement board typically has a label or manufacturer sticker on the front of the board. Is there a front and back on cement board?Ĭement board manufacturers imprint a gridlike pattern on one surface of the board. Face the rough side out if you will be using thin-set mortar adhesive to install the tile but the smooth side out if you will be using latex mastic. 36 What are the disadvantages of fiber cement siding? What side of the cement board faces up?Ĭement board has a smooth side and a rough side.
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