Explore 3 Trusted Door & Window Companies Serving Newmarket, ON

Keldan specializes in premium vinyl windows and doors for residential and commercial properties across York Region. With 40+ years of expertise, we provide energy-efficient solutions featuring True Lifetime warranties and meticulous brick-to-brick installations. Our commitment to quality products, skilled craftsmanship, and customer-centric service has made us a trusted choice for homeowners seeking enhanced comfort and property value.

R-Tech Windows is a Newmarket-based dealer of North Star Windows and Doors serving the local area since 2003. The company offers custom-made vinyl replacement windows, doors, porch enclosures, exterior shutters, siding and eavestroughing with high Energy Star ratings and CSA certification. Its purpose is to provide professional installation and supply services with consistent respect for every project from residential renovations to contractor supply.

Simon and Sons is a family-owned business established in 1967, specializing in high-quality windows and doors for residential properties in Newmarket and surrounding areas. We offer energy-efficient products, personalized service, and professional installation by our in-house team. Our commitment to Canadian-made materials and customer satisfaction has made us a trusted name in home improvement for over 55 years.