GTA's Trusted Spray Foam, Fireproofing & Insulation Contractor
Cut energy bills, eliminate drafts, and protect your building with code-compliant insulation and fireproofing from Mississauga's most-recommended crew.
- Free on-site quotes within 48 hrs
- 10-year workmanship warranty
- Licensed, WSIB & $5M insured
- Rebate paperwork handled for you
Insulation & Fireproofing, Done Right
From residential attic top-ups to commercial fireproofing, our certified crews handle every type of insulation project across the GTA.
Spray Foam Insulation
Open and closed-cell polyurethane spray foam for maximum R-value and air sealing.
Learn more →Commercial Fireproofing
ULC-listed spray-applied fireproofing for structural steel and concrete decks.
Learn more →Attic Blown-In Insulation
Top up to R-60 with blown-in cellulose or fibreglass for year-round comfort.
Learn more →Fibreglass Batt Insulation
Cost-effective batt insulation for walls, ceilings, and basements.
Learn more →Insulation Removal
Safe vacuum removal of old, contaminated, or rodent-damaged insulation.
Learn more →Residential Insulation
Whole-home insulation services for GTA homeowners and renovators.
Learn more →Commercial Insulation
Insulation and fireproofing for offices, retail, condos, and institutional builds.
Learn more →Industrial Insulation
Heavy-duty insulation and fireproofing for warehouses, plants, and facilities.
Learn more →The GTA's Most Recommended Insulation Crew
Certified Installers
CUFCA-trained spray foam applicators and ULC-listed fireproofing crews. Code-compliant, inspection-ready.
Rebate Help Included
We handle the paperwork for Enbridge HER+ and Canada Greener Homes rebates so you maximize your savings.
10-Year Warranty
Every residential project is backed by a 10-year workmanship warranty plus manufacturer material warranties.
Residential, Commercial & Industrial
What GTA Homeowners & Builders Say
"Northstar sprayed our entire basement and rim joists. Crew was clean, on time, and our heating bill dropped 35% the first winter."
"We used them on three condo projects for fireproofing. Always passes inspection, always hits schedule."
"Got our attic topped up to R-60 in one afternoon. They handled the Enbridge rebate paperwork for us. Highly recommend."
Proudly Serving the Greater Toronto Area
Frequently Asked Questions
How much does spray foam insulation cost in the GTA?
Most residential spray foam projects in the GTA range from $2,500 to $8,000 depending on square footage, foam type (open vs closed-cell), and access. We provide free written quotes and can advise on Enbridge HER+ and federal rebates that may apply.
Are you licensed and insured?
Yes — Northstar carries $5,000,000 commercial general liability, WSIB clearance, and our installers are CUFCA-trained and certified for spray foam and ULC-listed fireproofing application.
How long does an attic insulation top-up take?
Most attic top-ups to R-60 are completed in a single day, typically 3–5 hours for an average home. Insulation removal jobs add about half a day.
What warranty do you provide?
All residential workmanship is backed by a two-year guarantee. Spray foam and fireproofing materials carry the manufacturer's lifetime warranty.
What areas of the GTA do you serve?
We serve the entire Greater Toronto Area including Mississauga, Brampton, Toronto, Vaughan, Markham, Oakville, Burlington, Pickering, Whitby, Hamilton and surrounding communities.