Certified Windows and Doors is recognized through-out Windsor, Chatham, Sarnia and London Ontario for our in-depth knowledge, traditional Window and Door workmanship, and superior customer service and product integrity. We know the Replacement Window and Door business! After all, it's been our passion for over 15 Years. We're a proud member of the Better Business Bureau (BBB), Siding and Window Dealers Association of Canada (S.A.W.D.A.C), Energy Star Compliant Member, plus we're a "Green Home Green Planet" approved Window and Door approved contractor. Being in the Window and Door business for over 15 Years allowed us to build a reputation with our unmatched service and product reliability. All our products come with a lifetime warranty. Our Window and Door Warranty is the best in the business. Not only do you get a lifetime warranty, but this also covers accidental glass breakage and ripped screens for all Windows and Doors installations. Full-time Window and Door Installation crews from Certified Windows and Doors cover Windsor, Chatham, Sarnia and London Ontario. When it comes to Replacement Windows and Doors it's all about having the right mix of technology, talent and passion for a job well done! Replacement Window technology has advanced so rapidly that our customers demand to know what's currently available in the marketplace and what makes the most economical sense for their specific Window and Door project. For our replacement windows we have exhaustively searched the Canadian landscape looking for the perfect Window Replacement supplier that met our needs, but more importantly, met you our customer's needs.