Cement Board Drywall Joint Tape

Mix thin set mortar according to the manufacturer s instructions and apply a thin coat over the fiberglass tape with a drywall knife.

Cement board drywall joint tape.

Tape and mud the joints. The joint between cement board and greenboard is similar to the joint between two pieces of cement board or two pieces of drywall. Screw the drywall to the studs. Mesh cement board tape.

Cut drywall to fill in between the existing wall or ceiling and the cement board. Roll alkali resistant self adhesive. Spread joint compound over the length of the tape with a 6 inch drywall knife. Gray cement board tape 2 in.

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. 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. Run the drywall knife over the mortar to create a smooth finish and remove any excess material. Mix more thin set mortar and cover the taped joints with a thin layer using a drywall knife similar to mudding drywall joints.

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. I cracked the corner of the cement board while cutting it see pic and this tape is the perfect fix. 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. Qep 2 inch x 150 foot cement board drywall tape 99605q is perfect for my cement board project.

Very adhesive and very easy to cut with household shears. I ve use fiberglass drywall tape before and this tape seems to be easier to use than others. Push the mortar through the mesh tape and into the 1 8 inch space between the backer board and the drywall.