Foil Tape vs FSK vs Mastic 🔧 | How ATC Seals Ducts the Right Way! This is what it looks like when a system’s strapped in and sealed the ATC way. Panduit strap tightened with the tensioning tool, foil tape locked in airtight and professional. 🏗️ Foil Tape: Creates an airtight seal against metal, perfect for connecting rigid duct and ensuring no air leaks. 📦 FSK Tape: Sticks to insulation far better than foil, ideal for sealing seams or wrapping fiberglass. 🧱 Mastic Tape / Water-Based Mastic:

Introducing Gorilla Mounting Tape! Gorilla Mounting Tape is a tough, clear, permanent, double-sided mounting tape that holds in an instant, for a long-lasting, weatherproof bond. | The Gorilla Glue Company