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

Insulation & Fireproofing in Whitby

Whitby 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 Whitby Quote

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

Your Whitby Insulation & Fireproofing Contractor

Whitby blends heritage downtown character with major new-build communities in Brooklin and Williamsburg. Northstar serves Whitby with retrofit attic work in mature neighbourhoods and full new-construction packages further north.

Whitby's Brooklin community has expanded rapidly, with newer subdivisions and large detached homes that benefit from spray foam more than batts can deliver. Our Whitby crews can typically book new-build packages within a week.

Neighbourhoods We Serve in Whitby

BrooklinWilliamsburgPringle CreekDowntown WhitbyLynde CreekRolling Acres
Local building stock

Heritage downtown homes, 1990s subdivisions, and active new-build communities in Brooklin and the north end.

Whitby tip

Brooklin's newer homes have lots of vaulted volume — spec closed-cell foam under the roof deck for performance fibreglass can't match in tight rafter bays.

Recent Whitby project

Closed-cell spray foam envelope on a 2021 Brooklin new build — 3,800 sq ft completed in a single day.

Core Services in Whitby

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

More Services Offered in Whitby

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

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

Residential in Whitby

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

Residential services
Commercial insulation Whitby

Commercial in Whitby

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

Whitby Insulation FAQ

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

Get your free Whitby quote today

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

Call (416) 318-4202Get Free Quote