Building a new home? Replacing old windows? We can help.

We manufacture top-quality custom vinyl windows and doors meticulously designed and rigorously tested for life on Vancouver Island, and backed by stellar customer care and a No Hassle Lifetime Warranty.

Thermoproof, positive.

  • If I require further window services I will use Thermoproof. I am a happy customer & appreciate excellent service.

  • We love that you build your product locally and that you back it with exceptional service, and accordingly we will absolutely recommend Thermoproof to anyone asking about windows.