Whether building the home of your dreams, or renovating your existing home, Thermoproof windows, patio doors and skylights will not only enhance your home but beautifully frame your exterior views. Our products are backed by a fully transferable warranty, are remarkably energy efficient, secure and low maintenance - making them cost effective on so many levels. Thermoproof Manufacturing has been making windows, patio doors and skylights on Vancouver Island for over 30 years. When manufacturing our products, we use only high quality pure vinyl that resists fading, chipping or peeling and never needs painting. more... See more text