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

Insulation & Fireproofing in Ajax

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

(416) 318-4202Get Ajax Quote

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No-obligation, on-site assessment within 48 hours.

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

Your Ajax Insulation & Fireproofing Contractor

Ajax is one of Durham's fastest-growing cities with a strong new-build market. Northstar works with Ajax-area builders on spray foam packages and serves established neighbourhoods like Pickering Village and South Ajax with attic upgrades.

Ajax's lakeside exposure and dense newer housing make air sealing more important than raw R-value — which is exactly where spray foam outperforms fibreglass. We routinely complete full new-build envelopes in Ajax in a single day.

Neighbourhoods We Serve in Ajax

South AjaxPickering VillageWestney HeightsCentral AjaxAudleyNottingham
Local building stock

1990s–present subdivisions with a heritage core in Pickering Village.

Ajax tip

Ajax's wind exposure off the lake makes rim-joist sealing the highest-ROI air-leak fix for most homes here.

Recent Ajax project

Spray foam attic and cathedral-ceiling retrofit on a 2003 Audley home — eliminated ice damming on a north-facing roof.

Core Services in Ajax

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

More Services Offered in Ajax

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

Why Ajax 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 Ajax roofs
Cuts heating & cooling bills 30–50%
Improves indoor comfort year-round in Ajax
Adds structural rigidity to walls and roofs
Residential insulation Ajax

Residential in Ajax

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

Residential services
Commercial insulation Ajax

Commercial in Ajax

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

Ajax Insulation FAQ

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

Get your free Ajax quote today

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

Call (416) 318-4202Get Free Quote