Browse the Top 2 Door & Window Companies Serving Thunder Bay, ON

SRS Windows & Doors is a Thunder Bay-based contractor specializing in premium windows, doors, and siding solutions for residential and commercial properties. With over 25 years of combined experience, we deliver durable, energy-efficient installations backed by manufacturer and installation warranties. Our team prioritizes personalized service, ensuring clients achieve their desired aesthetic and functional outcomes.

Exterior Finishing specializes in exterior and interior home renovations for Thunder Bay residents. Since 1975, we've delivered premium windows, doors, siding, decks, and sunrooms with a focus on energy efficiency and lasting value. Our locally owned business combines industry-leading products with expert installation and comprehensive warranties.