Installing Wonderboard On Wood Floor

Use thin set mortar when installing cement backerboard.

Installing wonderboard on wood floor.

When installing wonderboard lite in wet areas such as showers nail or staple 15 pound roofing felt or 4 mil polyethylene sheeting the to the studs first. I am redoing a bathroom and installing cement board for the first time. If it is plywood you can install 1 4 backerboard over it with thinset beneath then ditra or just install 1 2 backerboard. This stabilizes the backer board levels it and prevents cracks in the tiles or tile grout.

Fasten the panels onto the studs using the same 1 8th inch spacing as a floor installation. Thin set dries slowly allowing you to fix and readjust backerboard sheets as needed. Ridge the mortar with the notched side of the trowel. Wonderboard lite must not be used as a structural load bearing member.

Spread the mortar with a notched trowel and lay the backer board while the mortar is still wet. I put down 7 16 wonderboard lite per manufacturer s direction which included thin set in the joints with mesh tape embedded. Everything looks great however all of the seams are slightly raised due to taping. The recommended procedure for installing fiber cement board such as wonderboard on the floor calls for first spreading a layer or mortar.

To avoid building up the floor too high you can use 1 4 in thick backer board instead of 1 2 in. Required tools for this project. 1 4 or 7 16 wonderboard lite floors countertops score then snap wonderboard lite 5 8 subfloor with 16 on center framing adhere to subfloor stagger surface and panel joints installation over existing vinyl floor fasten to studs tape gaps not for use over concrete gypsum substrates. Have the necessary tools for this diy project lined up before you start you ll save time and frustration.

Or you can apply redgard waterproofing and crack prevention liquid to the face of the wonderboard. Backer board installation when tiling bathroom floor. With the smooth side of a 1 4 inch notched trowel spread enough mortar for one sheet.