(416) 318-4202
Northstar Spray Foam and Insulation
Serving Oshawa, Durham Region · since 2012

Insulation & Fireproofing in Oshawa

Oshawa homeowners and builders trust Northstar for energy-saving spray foam, code-compliant fireproofing, and attic insulation upgrades. Local crews. Free quotes. 2-year warranty.

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Fully Insured
CUFCA Certified
2-Year Warranty
Same-Week Service
Local Service

Your Oshawa Insulation & Fireproofing Contractor

Oshawa is Durham's largest city and has a deep mix of housing — 1950s post-war near downtown, 1990s subdivisions in the north, and growing infill near the university and hospital. Northstar's Oshawa work skews toward attic upgrades and basement spray foam.

Many older Oshawa homes were built quickly during the auto-industry boom and have minimal original insulation. Removing settled fibreglass and topping up to R-60 with blown-in cellulose is one of our most common Oshawa jobs.

Neighbourhoods We Serve in Oshawa

Downtown OshawaO'NeillEastdaleNorthglenSamacWindfieldsDonevanLakeview
Local building stock

1950s post-war housing, 1990s family subdivisions, and newer infill near Ontario Tech.

Oshawa tip

Oshawa's post-war homes often have original 2x4 attic-floor joists with R-12 fibreglass — topping these up to R-60 typically pays back in 4–5 winters.

Recent Oshawa project

Attic insulation removal (mouse contamination) and R-60 blown-in cellulose top-up on a 1956 O'Neill bungalow.

Core Services in Oshawa

Spray Foam Insulationin Oshawa Commercial Fireproofingin Oshawa Attic Insulationblown-in to R-60

More Services Offered in Oshawa

Spray Foam Insulation
in Oshawa
Commercial Fireproofing
in Oshawa
Attic Blown-In Insulation
in Oshawa
Fibreglass Batt Insulation
in Oshawa
Insulation Removal
in Oshawa
Residential Insulation
in Oshawa

Why Oshawa Homeowners Choose Spray Foam

Ontario winters lose homes huge energy through gaps spray foam seals
Up to R-7 per inch — the highest practical R-value available
Eliminates ice damming on Oshawa roofs
Cuts heating & cooling bills 30–50%
Improves indoor comfort year-round in Oshawa
Adds structural rigidity to walls and roofs
Residential insulation Oshawa

Residential in Oshawa

Attics, basements, walls, garages, and crawl spaces. Free quotes for Oshawa homeowners.

Residential services
Commercial insulation Oshawa

Commercial in Oshawa

Offices, condos, retail, and industrial buildings. Tender-ready bids, WSIB coverage, on-time inspections.

Commercial services
Customer Stories

What 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."

Sarah M.
Mississauga

"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."

David L.
Vaughan

"Removed nasty old attic insulation full of rodent damage and topped us up to R-60 in one day. Highly recommend."

Priya K.
Oakville

"Got three quotes — Northstar wasn't the cheapest but the most professional by a mile. Quality of work was excellent."

Mark T.
Toronto
FAQ

Oshawa Insulation FAQ

Yes — Northstar provides open and closed-cell spray foam insulation throughout Oshawa and the surrounding area, for both residential and commercial projects.

Get your free Oshawa quote today

Call (416) 318-4202 or request online — same-week service available.

Call (416) 318-4202Get Free Quote