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Why is Air Barrier vs Vapor Barrier Sealing Tape Important to Ensure Efficiency?

Updated: May 3, 2021

Window installations can be nerve wracking. They’re often big and heavy, yet fragile. And in a high-performance building, windows are the most expensive components.

But that investment in great windows has a big payoff. High-performance windows deliver on interior comfort and building efficiency – so you don’t have to rely on less dependable HVAC systems to make you comfortable.

As a component of the building envelope when sealed with air barrier tape, windows are the most logical location to keep the outside air outside and the inside air inside. Whether it’s heating your home in winter while keeping out the cold or preventing overheating in summer – high-performance windows perform many core building functions. Windows have zero operational costs and no engines that inevitably break.

Interior air barrier systems are essential for a high-performance building envelope. There are many different types of air barriers used because they dramatically improve building energy efficiency, indoor comfort, and longevity.

The quickest way to remember the difference between an air barrier vs a vapor barrier is; air barriers protect the inside and a vapor barrier protects from the outside.

Jaeger USA Air Barrier Sealing Tape


Jaeger USA’s interior air barrier products are self-adhering air, vapor, and waterproof barriers that protect structures from the elements from the inside. There are many different types of air barriers. Fluid applied air barrier and membrane polyethylene air barrier materials are the two most popular.

Versatile and used as a transition material where different substrates meet or break, beams, columns, and similar joints or connections provide a solid envelope barrier.

Air barrier membranes are also great for covering staples or vapor barrier stakes for a finished look.

Made of a UV-resistant polyethylene film that can be used in many exterior house wrap locations. Examples of air barrier locations are; masking surfaces during stucco (render) application and painting, surface protection, color-coding, and can also be used for splicing and seaming pipefitting covers. It also works well under floating floors, carpet padding, any other location air can sneak in.

Air, Water, and Vapor Barrier Sealing Tape

Air, Water, and Vapor Barrier Sealing Systems


Jaeger USA’s Exterior Vapor Barrier Tape is a high performing, heavy-duty, commercial-grade sealing tape. Engineered to provide a permanent, durable installation that uses a revolutionary waterproofing air and water barrier membrane to provide protection against the element’s penetration into the structure.

Jaeger USA’s Air Barrier products, specifically transition tape, provide a durable seal around doors, windows, and other spaces exposed to the elements. Air barrier membranes can also be used to seal interior joints, seams, holes, and through-wall breaks.

Made of UV and moisture-resistant polyethylene air barrier film was designed to withstand the most demanding outdoor conditions. When used as an air barrier insulation Jaeger USA’s seam tape is highly durable, sticky, and created to withstand the most demanding conditions.

Whether meeting regulatory requirements for energy efficiency or enhancing weather ability, Jaeger USA barriers meet the need for high-performance building design. Key benefits of air, water, and vapor barriers include:

  1. Airtight performance in a wide range of temperatures

  2. UV-resistant technology and advanced weatherproofing

  3. Long-lasting, primerless adhesion to challenging materials, including PVC and metals

  4. Durability

  5. Bulk water resistance and covers a wide range of vapor permeabilities

Looking for more information? High-Performance Building Supply


Submitted By: Kate Putnam Marketing Manager Jaeger USA 198 Pickering Road Rochester, NH 03868 1-603-332-5816



Pete Walczak Director of Sales Jaeger USA 198 Pickering Road Rochester, NH 03868 1-603-332-5816
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