Thermolock boasts one of the most comprehensive warranties in the industry.  Some highlights include:

To the original purchaser, lifetime warranty against:

• Vinyl – peeling, cracking, chipping, blistering, pitting or warping.
• Insulated Glass – seal failure, material obstruction, film formation in the airspace
• Screen Frame – cracking or breaking
• Screen Cloth – rotting or staining
• Parts & Hardware – breaking, cracking or otherwise failing during normal use.

For full Replacement Window warranty text, click here.

For full New Construction Window warranty text, click here.

For Manufacturer's Certification Statement needed to claim
the Energy Tax Credit, click here.