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 warranty text, click here.