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DUCT SEALANTS

Reasons to seal duct work.
Heating and cooling costs for a typical home represent the greatest portions of the home’s energy costs. Duct leakage robs a home of the energy expended to heat or cool the home, and causes pollutants to be drawn into the home. Leaking ductwork often accounts for up to 30% of total heating and cooling costs. This leakage can account for as much as 50% of a homes total air infiltration. Leaking supply ducts contribute to an increase in energy costs. Duct leakage not only lowers the heating and cooling capacity, but can lessen equipment life as well.


Why duct work may leak.
Most connections are not sealed, not sealed properly, or sealed with a poor quality sealant. Adhesives on duct tapes can also dry out and not provide a good seal. On new construction, duct sealant is about the same cost of a job that is sealed with tape.


Types of duct work that can be sealed.
All types of duct work can have leakage problems, and can be sealed including sheet metal, flexible duct and fiberglass duct board.


Where to use duct sealant.
The connections between air handling units and plenums; all seams, plenums, takeoffs, boots, and other connections; longitudinal seams in spiral duct work; disconnected components; connecting joints between sections of branched duct work.



P26-0186

Airseal 22 Water-Based

Airseal 22 is a UL 181 A-M & B-M listed fast drying water based duct sealant with excellent adhesion, formulated to pressure seal all types of HVAC duct systems, including sheet metal, fiberglass duct board ad flexible duct. Apply to clean dry surfaces, dries to the touch in one hour, can be pressure tested in 12 to 24 hours. Water based, cleans up with soap and warm water.

Shelf Life: 18 months unopened
Color: Gray
Pressure Rating: Maximum 12” water column pressure
Coverage rate: Approx. 80 sq. ft. per gallon @ 20 mils. wet film thickness

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P26-0184

Airseal 33 Water-Based, Fiber-Reinforced

Airseal 33 is a UL 181 A-M & B-M listed fiber reinforced water based duct sealant used to pressure seal all types of HVAC duct systems, including sheet metal, fiberglass duct board and flexible duct. Apply to clean dry surfaces, dries to the touch in one hour, can be pressure tested in 12 to 24 hours. Water based, cleans up with soap and warm water.

 

Shelf Life:  18 months unopened
Color:  Gray
Pressure Rating:  Maximum 10” water column pressure
Coverage rate:  Approx. 80 sq. ft. per gallon @ 20 mils. wet film thickness

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