RIGID FIBERGLASS AIR DUCT: Assemble sections to manufacturer’s instructions. Apply a 3” side by 10 mil band of duct sealant to duct board. Embed a fiberglass scrim (5 mils, 20 x 10 weave) into the base coat and apply another 10 mil coat over the scrim.

FLEXIBLE AIR DUCT/ METAL DUCT APPLICATION: Using a brush or putty knife, apply duct sealant at a minimum thickness of 20 mils to the male section of the spiral duct or to both fittings in a rectangular duct. Effect joint while sealant is wet (within approximately 15 minutes) and secure with sheet metal screws applied as close to the joint head as possible (approx. 1/2” or less). Apply duct sealant to outside of assemble with a 3” band of sealant, thoroughly covering the head and sheet metal screws. Allow it to set (approx. 48-72 hours) before pressure testing system for leaks. 

Do not mix with strong acids. Prevent from freezing. Avoid excessive inhalation of vapors.  Do NOT handle or use this product until all safety precautions have been read and understood. Keep out of the reach of children. Provide general, adequate ventilation. If used as a spray or airborne, a respirator may be needed. Wear safety glasses. Wash hands thoroughly after handling.