Are high quality building tapes worth the money?
In the world of high-performance building, the saying 'the devil is in the details' couldn't be more true. When designing homes for greater efficiency, many building professionals - and most homeowners - focus on the big-ticket items like increased levels of insulation, high-performance windows, and air barrier membranes with specific perm ratings.
Choosing high performance building products is of course a very important first step, but how those products and design features are implemented is what makes the difference in the end.
It has long been known that an easy third of the heat loss in a home can be attributed to air leakage. So those fancy triple-pane windows with all expensive add-ons are great, but the tiny seams and penetrations that connect them are the most vulnerable points in the entire building envelope.
That's why the choice of building tape is critical for a high-performance building envelope. The longevity and reliability of a tape is directly linked to the chemistry of its adhesive and its ability to withstand environmental stresses like wind pressure and seasonal temperature fluctuations.
On a personal note, I was first convinced of the value of quality tapes 20 years ago by a worker I met on a site who had a leaking sunroof on his truck. He told me that due to the abuse of movement, rain, wind, and sun on black truck, every tape he tried (electrical tape, duct tape, Tuck tape, etc) lasted at best 2 months. He then put on some leftofer Siga tape he had, and at that point it had been there for a year and still wasn't leaking.
High-performance building tapes are not simply a substitute for duct tape; they are engineered to create a permanent, airtight, and moisture-resistant seal that will last the lifetime of the home. Understanding the science behind these tapes is crucial for ensuring your home is energy-efficient, durable, and healthy for decades to come. This guide is intended to to help you choose the best products.
This guide provides a comprehensive look at the key aspects of this topic. Below is an overview of the sections we will cover, allowing you to jump directly to the information you need.
- What are High Performance Building Tapes?
- Why is Tape Quality so Important for a Building's Longevity?
- The Science of Adhesives: Why Solvent-Free is Best
- Top High-Performance Building Tape Brands
- In brief
What are high performance building tapes?
High-performance building tapes are specialized adhesive products designed to permanently seal seams, joints, and penetrations in a building's air and weather barrier. Unlike generic tapes (like the ubiquitous 'duct tape,' which is typically made from polyethylene and fabric mesh with a rubber-based adhesive), these tapes are designed to withstand the rigours of construction sites and the long-term stresses of a building envelope.
This includes exposure to a wide range of temperatures, humidity, UV rays during construction, and the constant thermal expansion and contraction of building materials. For this reason, high-performance tapes are always made with a highly durable backing material, and a superior adhesive.
Why is tape quality so important for a building's longevity?
In building science, the air barrier is considered the most important line of defence for a home's durability and energy performance. Air leakage, or the uncontrolled movement of air through the building envelope, can be a noteable source of heat loss in winter and heat gain in summer. It's also the main driver of moisture problems inside wall assemblies.
The average home can have countless openings and hundreds of feet of seams from air barriers, windows doors, to electrical conduits, ventilation openings and plumbing pipes. So if your sealing method fails and allows warm, humid air to pass through walls in winter, air will condence and deposit moisture in walls as it escapes.
Over time, this moisture can lead to mould growth, rot, and the degradation of insulation and structural components. High-performance tapes create a continuous, robust seal over these weak points, ensuring a home remains airtight and dry. Building science professionals understand that an effective air barrier is far more important than a vapour barrier for controlling moisture in a wall assembly.
The science of adhesives: Why solvent-free tapes are the best
The difference between a high-performance tape and a generic one comes down to its adhesive. The longevity and reliability of a tape are directly linked to the chemistry of its adhesive and its ability to withstand environmental stresses.
Many tapes, including some versions of Tuck tape in North America, use solvent-based adhesives. While they may stick initially, the evaporation of solvents can cause the adhesive to become brittle and lose its flexibility over time. This makes the tape susceptible to cracking and peeling, compromising the airtight seal.
In contrast, the top-tier building tapes use high-quality, solvent-free acrylic adhesives. These are often referred to as 100% solid's' or UV-cured adhesives. The manufacturing process does not rely on a liquid solvent that must evaporate. This provides several key benefits:
- Durability and flexibility: Without solvents to evaporate, the adhesive remains permanently flexible and non-embrittling. This allows the tape to withstand the thermal expansion and contraction of building materials, ensuring a long-lasting bond.
- Stronger initial bond: These modern adhesives often have a very high initial tack and form a stronger, more durable bond immediately upon application.
- Safer and healthier: The absence of solvents means no volatile organic compounds (VOCs) are released during application, making these products safer for installers and building occupants.
Top high-performance building tape brands
It is a common misconception that SIGA is the only company that uses solvent-free adhesives. That isn't true, and at this point the most respected manufacturers in the high-performance building field have all adopted this technology.
That rumor probably has roots in the fact that Siga got thier product to market early, but they also had a brilliant marketing campaign. It's illegal to ship food with anything toxic, so Siga at one time was including candies in their shipments to prove they were solvent-free and not hazardous.
Here are some of the top brands of building tape that building science professionals rely on for longevity and as an effective permanent air barrier :
SIGA
A true industry leader, SIGA is the brand most often associated with permanent, solvent-free tapes. Their products, such as Wigluv for exterior use and Rissan for interior use, are foundational components of many Passive House and high-efficiency builds. They are known for their exceptional adhesive quality and durability, which provides builders with confidence in the long-term performance of the building envelope.
Pro Clima
As a key competitor to SIGA, Pro Clima is another European manufacturer with an excellent reputation for building science and high-performance products. Tapes like Tescon Vana are designed to meet the same stringent standards for a permanent airtight seal. Pro Clima also offers a full system of membranes and tapes, ensuring compatibility and optimal performance when used together.
3M
A global leader in adhesives, 3M brings its extensive scientific expertise to the building industry with products like the 3M™ All-Weather Flashing Tape 8067. This and similar products are designed to be highly durable and have an impressive application temperature range. They are also engineered to be self-sealing around fasteners, a crucial feature for long-term reliability.
Delta (Dörken Systems)
Delta is a well-respected brand, particularly for its membranes and accessories. Their tapes, such as Delta-Multi-Band, use a solvent-free acrylic adhesive and are integral parts of their complete air and moisture control systems. Like the other top brands, they provide a reliable, high-quality solution for professional builders.
ZIP System (Huber Engineered Woods)
Huber's ZIP System sheathing is a popular all-in-one structural panel and weather barrier. The associated ZIP System flashing tapes are designed to work seamlessly with the panels, forming an airtight and watertight system. The adhesive is formulated specifically for the sheathing's surface, ensuring a durable and long-term bond for the entire wall or roof assembly.
Airstop (Isocell)
Produced by the Austrian company Isocell, Airstop tapes are a cornerstone of high-performance building in Europe and are gaining traction globally. Products such as Airstop Solo and Airstop Flex use a high-quality, solvent-free acrylate (acrylic) adhesive.
They are known for their exceptional adhesion to a wide variety of materials and are specifically designed to meet the rigorous demands of Passive House and other low-energy building standards. Like other top-tier brands, Airstop provides a durable and permanent airtight seal for a long-lasting building envelope.
Coroplast
Coroplast is a German manufacturer that produces high-performance tapes for various applications, including building. Their RPX series and other products feature a UV cross-linked acrylic adhesive that provides excellent durability, moisture resistance, and long-term performance without the use of solvents. These tapes are designed to be a reliable and enduring component of a permanent air barrier system.
Gerband
Another German manufacturer, Gerband is a well-established brand in the building industry. Their tapes, such as the Gerband 586, are used for airtight sealing and feature a high-performance polyacrylate adhesive, which is a type of acrylic adhesive. They are known for their strength, reliability, and ability to bond well in a variety of conditions, making them a staple in many professional builders' toolkits.
Aerotape Premium Blue (Salola)
A key player in the high-performance market, Aerotape Premium Blue is a reliable, solvent-free tape from the French company Salola. Its adhesive is a durable acrylate (acrylic) that forms a permanent bond without the risk of becoming brittle over time.
With a reinforcing mesh and strong initial tack, it is engineered for both interior and exterior applications, providing a robust, long-term seal for joints in sheathing, house wraps, and vapor barriers. Its high flexibility allows for easy application around complex details like windows and pipe penetrations.
The Middle-ground solution: blue Tuck® Tape
The air sealing building tapes listed above are the top of the line options that offer the longest serving and most effective air barrier. We are keenly aware that not everyone is ready to pay the premium for those, which brings us to a reasonable comprimise.
If this guide has not 'closed the deal' in convincing you to get the really good stuff, we
Positioned as an effective middle ground between basic red tapes and premium solvent-free products, blue Tuck® Tape provides an accessible and reliable solution for better air-sealing. Unlike its more general-purpose red counterpart, this tape is made with a solvent-based acrylic adhesive specifically formulated for a stronger, more permanent bond to challenging materials like polyethylene vapor barriers.
While it's not a solvent-free product like higher-end options, its improved adhesive technology makes it a significantly better choice for creating a lasting air barrier seal. For many builders, the reliable performance and common availability of blue Tuck® Tape make it a solid and practical upgrade.
Upgrading from red Tuck tape to higher end brands listed above can be significant as they may be three and even five times more expensive. Arguably that is still a very good investement, but if that is out of the question then at least aim for the blue Tuck tape which is generally about 10 to 15 percent more expensive, and definately worth the premium for what it offers long term.
Where to buy high performance building tape?
Building supply box stores will for the most part only offer you the bottom end building tapes. Why this is still the case is anyone's guess. Finding higher quality building products can take a bit more effort and is likely best done online.
You can find top quality air barrier building tapes here in the Ecohome product directory, where each manufacturer should have product descriptions and spec sheets to make sure you get the right product. And by that I mean - once you step into thee arena of high quality adhesives and membranes, they can have more specific uses, and there will be different products for different purposes.
In brief
The choice of building tape is one of the most important decisions for a home's longevity and performance. High-performance, solvent-free acrylic tapes are the gold standard because they provide a permanent, flexible, and durable seal that generic tapes cannot match.
This is the fundamental technology that provides the long-term performance, durability, and adhesion required for a truly permanent air barrier. The brands listed above represent the best on the market, each providing a system-based solution that has been rigorously tested and trusted by building science experts and professionals for decades.
Also remember that energy performance is closely tied to a building's footprint, which is why efficient home shapes are a cornerstone of high-performance building standards like Passive House or LEED.
Now that you know more about high performance building tapes, find more info about air sealing and green building techniques in the Ecohome Green Building Guide and these pages below:
-
Choosing the right house wrap / WRB / weather barrier - which is best?
-
What is the difference between an air barrier and a vapor barrier?
-
Building science basics made easy - video
-
how to install a peel and stick air barrier membrane to stop air leakage
Comments (0)
Sign Up to Comment