
Insulation & Fireproofing in Mississauga
Mississauga homeowners and builders trust Northstar for energy-saving spray foam, code-compliant fireproofing, and attic insulation upgrades. Local crews. Free quotes. 2-year warranty.
Your Mississauga Insulation & Fireproofing Contractor
Mississauga is Northstar's home base — our trucks are on the road here daily, from Port Credit lakeside bungalows to the high-rise core around Square One. We've sprayed foam in thousands of Mississauga basements, attics, and new builds, and fireproofed structural steel on commercial projects from Meadowvale to the Airport Corporate Centre.
Many Mississauga homes built between 1970 and 1995 in Erin Mills, Streetsville, and Clarkson have severely under-insulated attics (R-20 or less). With Lake Ontario driving humid summers and harsh wind-chill winters, closed-cell spray foam and R-60 attic top-ups deliver the biggest comfort gains here.
Neighbourhoods We Serve in Mississauga
Mix of 1960s–80s detached homes, modern infill, and high-density condo/commercial near the city core.
Mississauga's lake-effect humidity makes closed-cell foam (vapour-impermeable) the right call for basements and rim joists.
Closed-cell spray foam retrofit on a 1978 backsplit in Lorne Park — homeowner reported a 38% drop in winter gas usage.
Core Services in Mississauga
More Services Offered in Mississauga
Why Mississauga Homeowners Choose Spray Foam

Residential in Mississauga
Attics, basements, walls, garages, and crawl spaces. Free quotes for Mississauga homeowners.
Residential services
Commercial in Mississauga
Offices, condos, retail, and industrial buildings. Tender-ready bids, WSIB coverage, on-time inspections.
Commercial servicesWhat GTA Homeowners & Builders Say
"Northstar spray-foamed our basement and rim joists. The cold spots are gone and our gas bill dropped 35%. Crew was on time and spotless."
"Hired them for fireproofing on a 6-storey build. Hit every inspection and stayed ahead of schedule. We've already booked them for the next project."
"Removed nasty old attic insulation full of rodent damage and topped us up to R-60 in one day. Highly recommend."
"Got three quotes — Northstar wasn't the cheapest but the most professional by a mile. Quality of work was excellent."
Mississauga Insulation FAQ
Get your free Mississauga quote today
Call (416) 318-4202 or request online — same-week service available.
