Duct sealing from inside

with AEROSEAL®

Delivering clean, temperate air with big energy savings

by making your ducts airtight.

lims aeroseal logo

Keeping air in ducts and energy costs down with Aeroseal

All air ducts leak to some degree, a lot of them badly. When you're losing air, you're losing money. It takes a lot more energy to keep your building occupiers comfortable, happy and productive when your ventilation system isn't sealed.

  • Aeroseal "finds" and seals all leaks up to 15mm from the inside of the duct, greatly reducing labour
  • No demolishing walls, ripping open ceilings, or creating false vent grilles to find and repair leaks
  • Improvements in air tightness are usually 80-90% and sealed leaks can withstand up to 2000Pa
  • Quicker, with much less business disruption than manual sealing methods
  • Usually around 30% cheaper than alternatives, with payback times averaging 1-4 years
  • Safe to use - The Aeroseal sealant meets European VOC regulations, and achieved French VOC class A+

Apartment Buildings

Say goodbye to dirty air, allergens, and contaminants blowing all over your apartments.



Commercial Properties

Increase energy efficiency while improving comfort and indoor air quality.



Hospitals & Clinics

Leaky ductwork is a key contributor to poor indoor air quality, directly impacting the health of your patients.

AEROSEAL® TAPPED FOR BILL GATE’s “SOLVING FOR ZERO: THE SEARCH FOR CLIMATE INNOVATION” PROJECT

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Aeroseal is safe to use in food preparation areas and pharmaceutical industries

 Winner of Energy Top 100 award by the US Department of Energy.

Our technology and service has been recognized by home builders and industry experts.

Trusted by homeowners and developers since 1997

How it works

Aerosealing the ductwork not only solved our critical ventilation issue, but it allowed us to lower fan speeds while increasing HVAC efficiency. There is no doubt that the duct sealing process had a significant impact on reducing energy usage and saving the county money. 


Jeff Hatton, Energy Management, Montgomery County Government, Miami Valley Autopsy Lab.


Healthier air

Say goodbye to dirty air, allergens, 

and contaminants blowing all over your house.

Real savings

Say goodbye to dirty air, allergens, 

and contaminants blowing all over your house.

Eco-friendly

Own a more efficient home. Save money and the planet at the same time.

"AEROSEAL® proved to be the right solution. Since it works from the inside to seal, it also provided a better alternative to mastic and tape when exposed ductwork made aesthetics an issue. I had initial concern that the AEROSEAL® process could coat the entire interior of the ductwork. It didn’t."


Nigel Marcussen, PE CEng, Arup Group Limited

Shattuck office building, California

Reduce energy consumption

Experts rank duct sealing as one of the most effective ways to reduce energy costs.

Improve indoor air quality (IAQ)

Leaky ductwork is a key contributor to poor indoor air quality, directly impacting the health and well being of a building’s occupants.

Improve building ventilation

Ventilation issues can be serious. They waste energy, cost money, and greatly reduce indoor air quality.

Meet building specifications

Building and energy codes change frequently, but with Aeroseal projects pass inspection — every time.

Save energy with AEROSEAL®

on your next project


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