WEATHER RESISTANT: Sealer not affected by normal movement of building wide service temperature range. Long shelf life. STRONG AND DURABLE: Installs without gaps and can reliably shut off moisture, vapor, corrosive chemicals and other leakages. Tacky, but leaves no sticky mess. Flexible and non hardening. PROFESSIONAL REPAIR: Ideal for crawl space wall liners, decking, joists, roofing, patch and repair, mobile home, automobile, windshield, headlight, sunroof and boat surfaces. EASY TO INSTALL: Double-sided adhesive applies to any overlapping metal seams and unusual patterns, for a watertight seal. DIRECTIONS: Simply apply this waterproof tape in tightly and cut the tape (don’t tear it) for best results.