Thermalite Shutters will NEVER swell, peel, crack, warp or burn.  As time passes, the integrity of Thermalite joints remains without cracks, so that Thermalite louvers do not lose tension and will work perfectly for many, many years.  And Thermalite’s water-based painted finish insures a lifelong true color with no harmful toxic affects to your home or your family.

With Thermalite, you’ll never spend a dime on costly adjustments or repairs that you can expect – over time – with wood shutters.