Cement Board Drywall Joint Tape

Apply a length of mesh style self adhesive drywall tape lengthwise over each of the seams that are between the drywall and the cement board rolling the sticky side of the tape out along its length and pressing it firmly to the surface with your palm.

Cement board drywall joint tape.

Cut drywall to fill in between the existing wall or ceiling and the cement board. Run the drywall knife over the mortar to create a smooth finish and remove any excess material. Cement board tape is a patented alkali resistant fiberglass mesh tape and the only tape that should be used for cement applications with dry or thin set mortar. The joint between cement board and greenboard is similar to the joint between two pieces of cement board or two pieces of drywall.

This self adhesive tape is made from the same vinyl coated fabric that is embedded in the face of some cement boards to give the board added strength and crack resistance. Screw the drywall to the studs. Push the mortar through the mesh tape and into the 1 8 inch space between the backer board and the drywall. Apply cement board joint tape to all of the joints between sheets adhering the tape with its self adhesive backing.

Gray cement board tape 2 in. Cover all of the corners joints and seams including the joint where drywall and cement board meet with the fiberglass mesh tape. Mix more thin set mortar and cover the taped joints with a thin layer using a drywall knife similar to mudding drywall joints. Roll alkali resistant self adhesive.

Very adhesive and very easy to cut with household shears. Tape and mud the joints. I cracked the corner of the cement board while cutting it see pic and this tape is the perfect fix. Qep 2 inch x 150 foot cement board drywall tape 99605q is perfect for my cement board project.

I ve use fiberglass drywall tape before and this tape seems to be easier to use than others. Mesh cement board tape. This video transition between cement board and drywall joint or how to tap drywall and cement board joint or tapping cement board and sheetrock shows the tra.