How Insulated Glass Works

Insulated glass units, often called IGUs, are engineered to deliver exceptional comfort and efficiency. These windows are crafted with two or more panes of glass that are carefully separated by a spacer, creating an insulating chamber between them. Think of it as a built-in thermal shield, working quietly to stabilize interior temperatures year-round.

The real insulating power lies in the space between the panes. While some systems use ordinary air, most high-performance IGUs are filled with specialized gases such as argon or krypton. These gases significantly slow the transfer of heat, helping to keep warmth indoors during winter and unwanted heat outdoors in summer.

To maintain clarity and longevity, the spacer is packed with a desiccant — a moisture-absorbing compound that prevents condensation and humidity from forming between the panes. This detail is critical to ensuring the glass stays clear and effective for years to come.

Production involves a precise, multi-step process. Each pane is paired with its spacer, sealed within a controlled environment, and infused with insulating gas. Once assembled, the unit undergoes polishing and a final application of durable sealants around the perimeter. This airtight seal ensures that gas stays in, moisture stays out, and the unit performs to its highest potential.

At US GLASS TEMP, this meticulous process is elevated into an art form — combining advanced engineering with uncompromising quality to deliver glass solutions that are as functional as they are beautifully crafted

Insulated Glass Components

Primary Seal

Polyisobutylene (PIB) forms the first line of defense in every insulated unit. This high-performance sealant minimizes the passage of moisture while delivering one of the industry’s lowest rates of argon loss. The result is reliable insulation that preserves energy efficiency over time.

Spacer

Our spacer systems are available in mill, black, bronze, or aluminum finishes, with stainless steel options offered upon request. Each spacer is engineered to maximize surface area for both primary and secondary sealants, ensuring greater durability. By reducing stress across the sealed unit and enhancing resistance to condensation, the spacer plays a vital role in both performance and longevity.

Secondary Silicone Seal

The secondary silicone layer secures long-term adhesion and adds strength to every insulated unit. Because silicone is non-organic, it resists weathering and maintains superior bonding with glass substrates. Its inherent structural properties reinforce the entire system, ensuring each insulated glass unit retains its integrity under demanding conditions.