Aeroseal Duct Sealing Technology

Minneapolis, MN | 612•208•2111

Changing the Game

Aeroseal is a breakthrough duct sealing technology that offers engineers, building contractors and property owners a fast, safe and highly effective way to seal duct leaks… all duct leaks – even those hidden under insulation, behind walls or in other hard to access areas.

Aeroseal Can Help You Quickly and Easily…

Meet Code Requirements
Fix Faulty Ventilation / Improve IAQ
Reduce Energy Use
Save Money

In the early 90s, the U.S. Department of Energy, along with the Environmental Protection Agency and others sponsored research at Lawrence Berkeley National Laboratory to find a solution to what they saw as one of the most critical building performance concerns – how to find and seal air duct leaks in existing structures without having to tear down walls or strip apart insulation. Several years later, the Berkeley Lab scientists came up with a solution based upon revolutionary thinking: if we can’t access the leaks from the outside of the ductwork, let’s do it from the inside.

The breakthrough sealant they developed, called Aeroseal, is applied as a non-toxic aerosol mist that is pumped throughout the inside of the building’s air duct system or ventilation shaft. The Aerosol particles, about the size of smoke particles, do not coat the inside of the ductwork, but instead, stay suspended in air until they come across leaks. There they accumulate and bond together around the holes until the leaks are filled.

Tests indicate that aeroseal sealant can last the lifetime of the ductwork. It often takes less than a day to set up the equipment, apply the sealant. Best of all, when the job is done, results are immediate.

Aeroseal is applied with the help of specialized software that controls the flow of the sealant and provides a real time progress report of the process. During the sealing, the computer monitor shows a graph with a minute-by-minute view of the sealing in progress. When the job is completed, the equipment generates a printout report that shows an accurate before and after leakage rate and the overall reduction levels attained.

Tests indicate that Aeroseal sealant can last the lifetime of the ductwork. It often takes less than a day to set up the equipment, apply the sealant. Best of all, when the job is done, results are immediate.

Code Compilance

Today’s building codes are demanding increasing tighter standard when in comes to duct leakage. Meeting these regulatory standards is often difficult, if not impossible to do through traditional manual sealing methods.

Using the computerized Aeroseal solution, however, meeting these tight standards is usually fast and easy to do. A growing number of engineers and building contractors are reporting that Aeroseal was effective when multiple attempts at manual sealing failed.

Fixing Ventilation and IAQ

For decades, building owners and their tenants have had to contend with the ramifications of faulty building ventilation. While the problems were well know – strong odors, chronic mold and mildew, discomfort, IAQ health-related concerns, high energy costs – little could be done to solve the problem. Like sucking air through a straw with holes in it, no amount of fan power would provide the amount of draw needed to evacuate stale air – unless you could seal the ducts. Unfortunately, traditional duct sealing methods were simply unviable solutions to the problem. Accessing the leaks to manually seal them typically involves demolition and rebuilding of existing structures – a proposition that is simply too disruptive and too expensive to afford. So the problem has all too often, been ignored. Since Aeroseal duct sealing works from the inside of the ducts to find and seal leaks, holes can be sealed without disrupting existing structures.The successful use of Aeroeal to fix ventilation issues in existing buildings has facilitated a revolution in the retrofit market with hundreds of high rise buildings in the New York area alone, being successfully areosealed.

Energy Savings

In most cases, aerosealing a structure can stop most if not all of the leakage, saving property owners 30 percent or more on a typical heating or air conditioning bill. Users often find that the savings they get from sealing their ductwork pays for the cost of aerosealing in less than three years – that’s about 23 times faster than upgrading windows – 30 times faster than insulating walls.

In addition to energy savings, effective duct sealing can have an immediate impact on indoor comfort and issues related to poor ventilation and air quality. Leaks in the ductwork rob the fan’s ability to move treated air throughout the system. Like trying to suck water through a straw with holes in it, no amount of energy can do the job. Buildings that exhibit rooms that never get enough heat in the winter or air conditioned air in the summer are likely suffering from leaky ductwork.

Excessive mold, mildew, dust and indoor allergies are also typical signs of duct leakage. Allergens such as dirt and pollen from outside the building are regularly sucked into the air ducts by the furnace or air conditioner. Leaks and gaps in the air ducts allow these allergens to bypass filters and get blown throughout the structure.

Until the advent of Aeroseal technology, there was little if anything a property owner or engineer could do to effectively fix duct leaks. Tape and mastic could be manually applied to the leaks that could be easily located, but most of your ductwork is hidden behind walls, under insulation or other hard to reach places. Aeroseal solves this problem by working from the inside to seal leaks. The U.S. Department of Energy awarded Aeroseal technology its Energy 23 Award, calling it one of the most significant developments in energy saving technologies to be made available since the DOE was first established.

Changing the Game

Code Compilance

Fixing Ventilation and IAQ

Energy Savings

Commercial Services | Residential Services