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Low-E

Low-E is a thin coating on glass that reflects heat. It helps control heat loss and heat gain.

Insulation, Air Sealing, and Ventilation

Why it matters

Low-E improves comfort and efficiency without changing the look much.

Where people get this wrong

There are different Low-E types. The best choice depends on climate. Low-E does not automatically mean high quality frame or good installation.

Real-world example

You stand by the window on a cold night and it does not feel like the outside is creeping in. Low-E helps create that calmer feel.

Where this hits your build

This affects comfort, energy costs, and indoor air quality. It gets locked behind drywall, so decisions here need to be right before finishing starts.

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