About Great Northern insulation
For over 40 years, we've helped Ontario homeowners and builders create safer, more energy-efficient and sustainable communities. With a comprehensive range of products and services, we're your insulation experts for existing home renovations and new residential construction—backed by our satisfaction guarantee. We're proud to serve all of Southern Ontario as the province's largest insulation company, and we hold Energy Star and Foam Masters™ certification. Contact us for a free on-site assessment—get in touch today to learn more. Products ✓ Spray foam (1/2 lb open cell) ✓ HFO spray foam (2 lb closed cell) ✓ Cellulose (blown and dense pack) ✓ Fiberglass (batts, blown and blanket wrap) ✓ Mineral wool (batts) ✓ Hemp (batts) Services We install insulation throughout your home: ✓ Attic insulation ✓ Wall insulation ✓ Basement insulation ✓ Crawl space insulation ✓ Garage insulation ✓ Flooring insulation Brands We supply high-performance, brand-name insulation materials backed by third-party warranties. Our certified installers are professionally trained to install all types of insulation. Featured Services Spray foam insulation, blown fibre insulation, air barrier systems, old insulation…
- Services: Founded in 1980, Operating across commercial, industrial, residential and agricultural sectors, close to 350 employees across 8 branches, SPECIALITIES
- Location: Toronto
- Address: Toronto, ON, Canada
- Hours: 09:00-18:00
- Phone: 8003465485
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