Install the carpet gripper around the perimeter of the room, ensuring half an inch is left between the walls and gripper.Butt the carpet gripper against each other, stapling the underlay along the inside of edge of the carpet gripper. Trim the excess, and using duct tape, seal the seams.
Cutting the carpet and seams
Practice your cutting technique on the old carpet, prior to installing the new piece, otherwise a slip of the knife will be expensive!Allow an extra 100-150mm'in each direction for safety. If carpet heat seaming tape can't be avoided because the room is too wide, make sure the pile faces in the one direction and there's enough to overlap the first piece by 4 to 6 inches.Use heat seaming tape with the adhesive side up, on the floor underneath where the pieces join, iron the tape with a seaming iron to activate the adhesive. Use a rolling pin to seal the carpet heat seaming tape.