It is thick and easily applied with a paintbrush or putty knife.
Water based duct mastic sealant.
Available in two sizes this mastic is ideal for all manner of hvac air leak repairs.
Used for permanently sealing sheet metal and flexible duct system joints.
Product overview master flow water based air duct sealant helps seal all types of air ducts to reduce the risk of conditioned air leakage.
Sealing air duct plenums takeoffs elbows and vent boots where they connect and sealing the seams per product instructions may help save energy.
Master flow duct mastic sealant creates tight seal on duct seams and joints and helps eliminate air leakage to increases the overall efficiency of the duct system.
Non toxic adhesive sealant.
Learn how to seal yo.
Using a duct sealant called mastic is the professionals choice.
Ul 181 listed rigid fiberglass and flexible air ducts.
Water based non flammable fire and weather resistant.
It will flow into corners and creases too.