Mastic vs Tape: Confirm the Approved Sealing System
Use the sealing material approved for that joint, pressure class, duct type, exposure, and project specification; mastic and tape are not automatically interchangeable.
Stop if For this joint and pressure class, is the approved seal system mastic, listed tape, gasket, or a combination? Watch out Do not substitute cloth duct tape, mix incompatible products, or assume the material used on another system is acceptable here. Check Identify the exact seam or joint Check the seal class and project specification Verify the tape or mastic product is approved for the surface and exposure Confirm required surface preparation and cure time Use manufacturer-compatible accessories where reinforcement is required Steps Identify the exact seam or joint Check the seal class and project specification Verify the tape or mastic product is approved for the surface and exposure Confirm required surface preparation and cure time Use manufacturer-compatible accessories where reinforcement is required Say this to your foreman For this joint and pressure class, is the approved seal system mastic, listed tape, gasket, or a combination?
Copy this More in Sealing, Leakage, Mastic & Pressure Testing