40+ years serving you

In business since 1977, we are the largest locally owned window and door manufacturer on the island. We started out with wood windows, transitioned to aluminum and have now perfected our products using vinyl. Our components may have changed over the years, but our focus on exceptional quality and customer service remains steadfast.

Customer Care

At Thermoproof, we listen carefully in order to understand your needs and goals.

We also know that actions speak louder than words. Our sales and installation teams are knowledgeable, professional, and get the job done right the first time. Plus, we actively follow up with you once your new build or renovation is complete to make sure you are completely satisfied.

We know we’re doing something right, because our customers are our greatest ‘marketing team’ – consistently sharing their praise for our products and services with family and friends.

Our Values

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.