Air Duct Sealant

Duct sealing by michael church here and in this video we re going to show you how and why it s very important to air seal the run of the ductwork.

Air duct sealant.

Closure systems used with flexible air ducts and flexible air connectors shall comply with ul 181b and shall be marked181b fx for pressure sensitive tape or 181b m for mastic. Air duct sealing video transcript. It dries to a tough flexible and weather resistant seal. It adheres to many surfaces like.

Rated for indoor or outdoor use you can apply this anywhere you have an air leak. 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 water based air duct sealant helps seal all types of air ducts to reduce the risk of conditioned air leakage. The sealant is fiber reinforced and easy to apply by brush gloved hand or putty knife to flex duct duct board and sheet metal air ducts.

Duct connections to flanges of air distribution system equipment or sheet metal fittings shall be mechanically fastened. You all have duct work either in your attic or crawlspace or something like that. In houses with forced air heating and cooling systems ducts are used to distribute conditioned air throughout the house. In a typical house however about 20 to 30 percent of the air that moves through the duct system is lost due to leaks holes and poorly connected ducts.

We connect our proven technology to your home or business heating air system to distribute the sealing formula. The mastic duct sealant foil is also uv resistant mold and mildew resistant and will hold up to water moisture most chemicals and any weather conditions. The sealant is fiber reinforced and easy to apply by brush gloved hand or. 3m aluminum foil tape 3340 2 5 x 50 yd 4 0 mil silver hvac sealing and patching hot and cold air ducts fiberglass duct board insulation metal repair 4 7 out of 5 stars 452 16 98 16.