Living room dualpane windows with Low-E glass look out onto a snowy deck

Willmar ES3500 dualpane single-hung window

Welcome to FAQ Friday – a new feature on the JELD-WEN blog. Each week we will answer a Frequently Asked Question about our products, service or industry. We hope you find these answers helpful! Let’s look at this week’s question:

What is “Low-E” glass?

Low-emissivity (or Low-E) glass is window glass that has been coated with a low-emittance material designed to reduce the ultraviolet factor (u-factor) through absorption or reflection of solar radiation. Low-E glass repels ultraviolet rays that cause heat during summer months and absorbs rays to let in heat during winter. This can help lower energy bills significantly, year round.

To see other questions we’ve answered, visit the FAQ page on our website. If you have a question you don’t see answered there, just leave your question in a comment below! Or,  contact us.