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 sealant.

Duct connections to flanges of air distribution system equipment or sheet metal fittings shall be mechanically fastened. Air duct sealing video transcript. You all have duct work either in your attic or crawlspace or something like that. 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.

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. 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. It dries to a tough flexible and weather resistant seal. Dap high temp 100 rtv silicone sealant 10 3 fl oz red duct sealant.

Rated for indoor or outdoor use you can apply this anywhere you have an air leak. Master flow water based air duct sealant helps seal all types of air ducts to reduce the risk of conditioned air leakage. Our non toxic water based formula effectively seals all the holes in the air ducts and vents making sure the air goes where you need it not where you don t. 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.

It adheres to many surfaces like. We connect our proven technology to your home or business heating air system to distribute the sealing formula. The sealant is fiber reinforced and easy to apply by brush gloved hand or. In houses with forced air heating and cooling systems ducts are used to distribute conditioned air throughout the house.