Fiberglass Self-Adhesive Drywall Joint Tape is an easy-to-apply mesh used to reinforce cracks in walls, joints in drywall or cement boards, and finishes in polystyrene moldings. Its self-adhesive backing allows quick installation, while its alkali-resistant composition makes it a reliable choice for cement-based materials. This tape helps prevent cracks over time and is ideal for construction, remodeling, and drywall projects.