FAQs for
residential applications

Should I call Guardian Glass if I need help with my window or door?

Can you explain what Low-E coatings are?

How do Low-E coatings work?

What types of Low-E are there?

Do Low-E coatings also affect visibility?

Can you explain how a home gains heat? How does it lose heat?

What is the Solar Heat Gain Coefficient?

What do U-value and R-value mean?

How do windows insulate my home?

What are the benefits of installing new windows?

What is the National Fenestration Rating Council (NFRC)?

What is ENERGY STAR®?

FAQs for
commercial applications

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FAQs for
interior applications

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