... *2.8mm, 3*3mm IntroductionFiberglass self-adhesive tape (also called fiberglass drywall joint tape) is made of high quality fiberglass. And ... wall space should be kept clean and dry2.attaching adhesive tape and pressing tightly in the breaking point of wall3. ... lightly5.filling enough coating ,let surface smooth6.cutting uncovering adhesive tape, to make sure all the leakage point have been mended ,then ...