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Frequently Asked Questions About Insulated Glass Units

Insulated glass units are very common in home and commercial buildings. At Glass Doctor®, we specialize in installing insulated glass units for windows that need replacements and upgrades. Call us at 855-603-1919 for a free, in-home consultation and have one of our certified professionals install an IGU for you today. 

Answering Your Questions About Insulated Glass Units

Expertise is important when you install new windows in your home. Glazing is a trade requiring training and skill you're probably not going to get from a store clerk. Here are some of the questions we routinely hear from customers who are thinking about purchasing insulated windows.

Q. Do insulated glass windows really save on energy bills?

Yes. Glass is great for letting in light and adding space to homes, but single pane windows don't do much to protect against weather. Insulated glass units seal air or gas in between the window panes. This air pocket increases the insulating value of your home. 

Q. Do I need to inject gas in between the panes?

Sometimes, the spaces in between insulated windows are filled with argon or krypton gas. There is a bit of debate about the value they add. That said, when we come to the house for your consultation, we're happy to walk through the costs and benefits of a gas fill.

Q. What is "Low-E" glass?

Low emissivity glass has a reflective film applied to the panes. In warmer climates, the film is placed on the outer pane to reflect heat away from the window. In colder climates, it's placed on the inside frame to reflect heat back into your home. We're happy to offer Low-E glass as an option for your insulated windows.

Q. Do I have to replace the whole window?

In many cases, you won't have to replace the whole window. If your window has a broken seal or a cracked pane, we're happy to simply replace the glass and restore the seal.

Q. Does Glass Doctor have emergency services?

Yes, we offer emergency services 24 hours a day. If you have a broken window or glass that needs to be repaired, call us as soon as possible. If you're interested in priority scheduling, take a look at our Advantage Plan®.

Schedule Your Free, In-Home Consultation Today

When you're ready to choose an insulated glass unit, give Glass Doctor a call at 855-603-1919 to schedule your free, in-home consultation.




Glass Doctor installed the most perfect shower enclosure I've ever seen. Ahead of schedule, on budget, exactly what was ordered! This was a GREAT deal. Thank you.

— Dennis B.

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