Warranty Information

Thermal Windows and Doors are backed by some of the strongest warranties in the business because we trust that we design and manufacture products that are made to last. We offer that same trust to you. You can rest easy, knowing that in choosing Thermal products, you have chosen unsurpassed quality. Our warranty is our guarantee.

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Silent Guard® Warranty

Series 7000 Warranty

Series 5000 Warranty

Series 3000 Warranty

Specialty Windows Warranty


Patio Doors Warranty

Fiberglass Door Warranty

Steel Door Warranty

Patio Enclosures and Sunrooms

Dreamspace 3200 Warranty

Dreamspace 300 Warranty

Decking & Railing

Decking & Railing Warranty

New Window Condensation

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