March 15, 2017 - Building & Construction

Understanding Insulated Glass Sealants

The global insulated glass market is expected to reach $4.26 billion by 2025, according to Grand View Research. With a 7% annual growth rate, this type of glass is growing in popularity due to its:

  • Energy savings
  • Lower carbon dioxide emissions
  • Stricter building regulations

Find out how sealants are used in insulated glass (IG) and what manufacturers need to know when selecting one:

How are Sealants Used in IG?

Sealants are used to prevent the glass units from moisture and gas penetration. They also help bond the components of the IG unit together.

Types of Sealants for IG:

  • Two-component: While these types of sealants form an irreversible bond, window manufacturers must ensure proper mixing, application and curing occur. If not, then the process can result in sealant failure as well as additional time and money.
  • Single-component: These sealants rely on a water vapor cure mechanism. This requires an effective packaging system to prevent the inclusion of atmospheric moisture. It’s important to ensure an effective post application cure to aid in product performance.
  • Hot Melt Butyl: These sealants have traditionally been the go-to option for insulated glass sealants, because they do not pose any cure issues. They eliminate all cure-time handling requirements and are the best balance between performance and operational efficiency.

Bostik is a global leader in hot melt IG sealants, working with others in the industry. In North America specifically, we’ve partnered with Quanex, the leading supplier of IG systems, as our exclusive IG sealant distributor. To learn more about IG systems, visit Quanex.com.

For more information on sealants for windows and other applications, call 800-7-BOSTIK.

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