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December 26, 2019 - Building & Construction

3 Ways Window Sealants Impact End-Use Performance

As a window manufacturer, you likely know that while a window may be manufactured properly, there still may be issues once installed that prohibit the window from reaching its true performance potential. Here are three reasons why that may be the case when it comes to window sealants and how to avoid them.

#1: The Wrong Technology May Have Been Chosen for End-Use Environment

While there are many window sealants on the market today, such as silicones and polyurethanes as well as modified and hybrid technologies, not every sealant is ideal for every end-use environment. Rather, each sealant technology has different capabilities and environmental resistance levels based on formulation. These differences ultimately impact how the window will perform once installed.

For example, acrylic sealants are susceptible to freezing and shrinkage. Therefore, consider using them on a window installation only if the window is in a warmer environment. Otherwise, the window will likely not reach its true performance potential.

Additionally, certain sealant technologies, such as silicone, will typically not adhere to wet or damp surfaces. While the window may have been manufactured properly, it still will fail once in use.

Ensure you choose a sealant that is equipped to perform in the installation environment.

window sealants

#2: The Overall Window Aesthetic May Not Have Been Taken Into Account

Another aspect to think about is the role window sealants play in overall window aesthetics and how that impacts perceived performance. For instance, when installing a window into a home, consider using a sealant that can match the home’s siding or trim. Additionally, when installing a window to a brick building, consider using a textured sealant.

Selecting a sealant that enhances end-use window aesthetics will improve perceived value and performance.

#3: The Sealant May Have Been Applied Inconsistently

Another issue that can impact window performance is inconsistent sealant bead application during the install process. This is because inconsistent bead application can lead to:

  • Improper window seal
  • Insufficient protection from environmental elements

Ensure your sealant beads are applied consistently, so that the window is able to achieve full performance potential.

One way to aid in consistent sealant bead application is to select the right package size for the given installation job. This will mitigate having to change packages mid-project, which makes it more difficult to achieve the exact same bead size. Using a sausage package or one with a removable nozzle can help achieve consistency.

Looking for a Window Sealant?

Bostik formulates sealants for both window manufacturing and installation processes. As a one-stop-shop, you can rest assured that these products are compatible and work together to improve window performance, longevity and durability.

Contact a Bostik expert today to learn which window sealant is right for your application.

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