Roofing Nails With Thinset Mortar

Then with 2 inch galvanized roofing nails nail through the cement board and into the floor joist cement board screws work as well.

Roofing nails with thinset mortar.

Of a little known fact but most cement board manufacturers want fiberglass alkaline resistant mesh tape embedded in thinset mortar over the backer board seams. While nailing the cement board down the spacing should be approximately 8 inches apart. When you squeeze the thin set mortar into this gap it will lock the two sheets together and strengthen the seam. Gap between sheets of cement board.

But this doesn t stop people from trying to use ring shank nails. Most cement board manufacturers require galvanized roofing nails or cement board screws. Hot dipped galvanized roofing nails. If special screws aren t available attach the cement board with 1 1 2 in.

You ll still need to screw it down with deck screws 1 or 1 1 4 and avoid the joists or nail it down with roofing nails. The point of mortar under the hardibacker is to ensure even bedding and good support of the hardibacker. With the cement board in place use a fiberglass mesh tape and a thin set mortar tape up all your seams. 1 inch corrosion resistant roofing nails 1 inch self drilling corrosion resistant screws drill sponge use a sponge to wet down the backer board before applying thin set above the backer board 2 inch wide alkali resistant fiberglass joint tap setting materials square notch trowel thin set mortar.

Use nails or screws as temporary spacers to create a 1 8 in.