Understanding the Different Types of Window Glass
- Fog Busters
- May 30
- 2 min read
Window glass plays a crucial role in architecture and interior design, offering not only views and natural light but also insulation, security and aesthetic appeal. As technology has advanced, so too has the variety of glass options available. Choosing the right type of glass can significantly impact energy efficiency, comfort and even safety. Below is an overview of window glass and their applications.
Annealed Glass
Annealed glass is the most basic type of glass, produced by slowly cooling molten glass to relieve internal stresses. It's clear and inexpensive but weaker than tempered glass. When broken, it shatters into large, sharp shards. It is best used for interior applications where safety is not a concern.
Tempered Glass
Tempered glass is heat-treated to increase its strength. It's four to five times stronger than annealed glass and, if broken, shatters into small, blunt pieces that are less likely to cause injury. Tempered glass is best for doors, windows close to the ground, above a sink or bathtub, and other areas prone to impact.
Laminated Glass
Laminated glass consists of two or more layers of glass bonded together with a plastic interlayer. If it breaks, the interlayer holds the shards in place, making it a top choice for safety and sound insulation. The downside is that it is often too heavy to install into residential windows making them hard to operate. If soundproofing is a concern, it can be helpful.
Insulated Glass (IGU
Insulated glass units are made of two glass panes separated by a spacer and sealed to form a unit. The space between the panes is filled with air or inert gas (like Argon or Krypton) to improve thermal insulation. Most residential windows use insulated glass units. The IGU can be made with either annealed or tempered glass.
Low e Glass
Tinted glass is infused with colorants (such as bronze, gray or green) to reduce glare and control heat gain. It also offers a degree of aesthetic enhancement. It is best for sunny locations as it deflects the UV rays from the sun to prevent fading of furniture, carpet, etc.
Obscured Glass
This type of glass is treated to make it translucent, allowing light in while maintaining privacy. Techniques include acid-etching and sandblasting. There are a variety of patterns to choose from. It is best for bathrooms, entryways and any space needing both light and privacy.
Choosing the right window glass depends on multiple factors, including climate, building codes and safety requirements. Whether you're seeking energy savings, enhanced safety, or improved aesthetics, understanding the options available can help you make informed
decisions and create a more comfortable and efficient space.
