Cement Board Drywall Joint Tape

Mesh cement board tape.

Cement board drywall joint tape. Run the drywall knife over the mortar to create a smooth finish and remove any excess material. Screw the drywall to the studs. I ve use fiberglass drywall tape before and this tape seems to be easier to use than others. 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.

Mix more thin set mortar and cover the taped joints with a thin layer using a drywall knife similar to mudding drywall joints. 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. Cover all of the corners joints and seams including the joint where drywall and cement board meet with the fiberglass mesh tape. Mix thin set mortar according to the manufacturer s instructions and apply a thin coat over the fiberglass tape with a drywall knife.

Cut drywall to fill in between the existing wall or ceiling and the cement board. The joint between cement board and greenboard is similar to the joint between two pieces of cement board or two pieces of drywall. 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. Spread joint compound over the length of the tape with a 6 inch drywall knife.

Complete the job by piecing in any missing drywall and taping the seams. I cracked the corner of the cement board while cutting it see pic and this tape is the perfect fix. Very adhesive and very easy to cut with household shears. 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. 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. Tape and mud the joints.