Insulation Contractors in Ontario
80 verified insulation contractors across 10 cities. Compare Google ratings, read 0 reviews, and find the right pro.
Hiring GuideLicensing, questions to ask, red flags
Cost Guide2026 pricing, factors, tips to save
Insulation Contractors by City
Northwood Insulation Pros
Insulation·Timmins·456 Pine St
4.6(0 reviews)
Timmins Thermal Solutions
Insulation·Timmins·23 Elm St
4.6(0 reviews)
Comfort Seal Insulation Co.
Insulation·Timmins·789 Oak Ave
4.4(0 reviews)
Green Shield Insulators
Insulation·Timmins·987 Maple Dr
4.8(0 reviews)
Pro Insulation Services Ltd.
Insulation·Timmins·111 Spruce St
4.7(0 reviews)
Timmins Home Insulation Experts
Insulation·Timmins·345 Cedar Rd
4.6(0 reviews)
Thermal Guard Insulation
Insulation·Timmins·678 Birch St
4.0(0 reviews)
Insulate Plus Solutions
Insulation·Timmins·901 Walnut Dr
4.4(0 reviews)
Winter Shield Insulation
Insulation·Timmins·123 Spruce Ave
4.9(0 reviews)
Eco-Friendly Insulation Works
Insulation·Timmins·567 Pine Rd
4.2(0 reviews)
Welland Insulation Pros
Insulation·Welland·475 Jackson St
4.0(0 reviews)
HeatGuard Insulation
Insulation·Welland·12 Elmwood Rd
4.4(0 reviews)
ComfortCraft Insulation
Insulation·Welland·785 Main St
4.8(0 reviews)
ThermalGuard Contracting
Insulation·Welland·205 Victoria St
4.5(0 reviews)
Welland Home Insulation Ltd.
Insulation·Welland·25 Pine Rd
4.5(0 reviews)
Airtight Insulation Co.
Insulation·Welland·365 Bridge St
4.8(0 reviews)
EcoTherm Insulation Services
Insulation·Welland·195 Church St
4.8(0 reviews)
InsulatePlus Contracting Inc.
Insulation·Welland·123 Elm St
4.5(0 reviews)
ThermalSeal Insulation Experts
Insulation·Welland·515 Maplewood Dr
4.4(0 reviews)
Windsor Insulation Pro
Insulation·Windsor·456 Ouellette Ave
4.8(0 reviews)
Thermal Guard Insulation
Insulation·Windsor·200 Wyandotte St W
4.3(0 reviews)
Fortress Home Insulation
Insulation·Windsor·125 Park Ave
4.1(0 reviews)
Comfort Seal Insulation Inc.
Insulation·Windsor·807 Dougall Ave
4.0(0 reviews)
HomeGuard Insulation Services
Insulation·Windsor·625 City Park Dr
4.1(0 reviews)
Weather Guard Insulation
Insulation·Windsor·321 Richmond St E
4.8(0 reviews)
Insulate & Save Inc.
Insulation·Windsor·573 University Ave W
4.6(0 reviews)
Superior Insulation Solutions
Insulation·Windsor·247 McDougall St
4.1(0 reviews)
Windsor Weatherproofing & Insulation
Insulation·Windsor·689 Dougall Ave
4.5(0 reviews)
Ottawa Insulation
Insulation·Ottawa·901 Sussex Dr
Not yet reviewed on Google
Peterborough Insulation Pros
Insulation·Peterborough·87 King St
4.6(0 reviews)
Comfort Seal Insulation
Insulation·Peterborough·245 Hunter St E
4.9(0 reviews)
GreenShield Insulation Co.
Insulation·Peterborough·300 George St N
4.2(0 reviews)
Thermal Guard Insulation
Insulation·Peterborough·117 Church St
4.3(0 reviews)
Kawartha Insulation Solutions
Insulation·Peterborough·450 Sherbooke St
4.3(0 reviews)
InsulateTech Contractors
Insulation·Peterborough·78 Albert St
4.2(0 reviews)
ComfortCove Insulation Ltd.
Insulation·Peterborough·280 King St E
4.7(0 reviews)
Peter Insulators Inc.
Insulation·Peterborough·250 Main St
4.4(0 reviews)
Insulation Experts Ltd.
Insulation·Peterborough·220 Dundas St E
4.6(0 reviews)
EnergyGuard Insulation
Insulation·Peterborough·21 Mill St
4.4(0 reviews)
HeatTech Insulation & More
Insulation·Sarnia·320 Birch St
4.2(0 reviews)
Weather Shield Insulation
Insulation·Sarnia·890 Elm St
4.3(0 reviews)
Insulation Crafters Ltd.
Insulation·Sarnia·201 Cedar St
4.2(0 reviews)
Eco-Friendly Insulation Solutions
Insulation·Sarnia·501 Douglas St
4.4(0 reviews)
Insulation Plus Services Inc.
Insulation·Sarnia·601 Pine St
4.1(0 reviews)
Sarnia Insulation Pros
Insulation·Sarnia·456 Douglas St
4.6(0 reviews)
Thermal Guard Insulation
Insulation·Sarnia·234 Cedar St
4.0(0 reviews)
Comfort Seal Insulation Ltd.
Insulation·Sarnia·789 Pine St
4.1(0 reviews)
Sudbury Insulation Contractors Ltd.
Insulation·Sudbury·567 Bayside Dr
Not yet reviewed on Google
Insulation Services Kingston
Insulation·Kingston·234 York St Kingston ON K7L 1J3 Canada
Not yet reviewed on Google
Insulation Experts Ottawa
Insulation·Ottawa·456 Sussex Drive
Not yet reviewed on Google
Insulation Services Kingston
Insulation·Kingston·456 Front St Kingston ON K7K 5T8 Canada
Not yet reviewed on Google
Barrie Insulation Pros
Insulation·Barrie·789 Bayfield St
Not yet reviewed on Google
Barrie Insulation Pros
Insulation·Barrie·789 Bayfield St
Not yet reviewed on Google
Barrie Insulation Pros
Insulation·Barrie·789 Bayfield St
Not yet reviewed on Google
Barrie Insulation Pros
Insulation·Barrie·789 Bayfield St
Not yet reviewed on Google
Barrie Insulation Pros
Insulation·Barrie·789 Bayfield St
Not yet reviewed on Google
Barrie Insulation Pros
Insulation·Barrie·789 Bayfield St
Not yet reviewed on Google
Sarnia Energy Solutions Inc.
Insulation·Sarnia·567 Maple St
4.2(0 reviews)
Top Notch Insulation Services
Insulation·Sarnia·321 Oak St
4.5(0 reviews)
Insulation Services Kingston
Insulation·Kingston·234 York St Kingston ON K7L 1J3 Canada
Not yet reviewed on Google
London Insulation Pros
Insulation·London·555 Richmond St
Not yet reviewed on Google
Insulate London
Insulation·London·1235 Highbury Ave N
Not yet reviewed on Google
London Insulation Co.
Insulation·London·456 Dundas St
Not yet reviewed on Google
Thermal Insulation London
Insulation·London·789 Ontario St
Not yet reviewed on Google
Insulation Solutions London
Insulation·London·1015 Wellington Rd S
Not yet reviewed on Google
London Insulation Experts
Insulation·London·567 King St
Not yet reviewed on Google
Kingston Insulation Pros
Insulation·Kingston·145 Front St K
Not yet reviewed on Google
Insulation Experts Kingston
Insulation·Kingston·20 Toronto St
Not yet reviewed on Google
Kingston Insulation Solutions
Insulation·Kingston·3 Gore Rd
Not yet reviewed on Google
Northern Insulation Solutions
Insulation·Sudbury·155 Bay St
Not yet reviewed on Google
Sudbury Insulation Co.
Insulation·Sudbury·123 Regent St
Not yet reviewed on Google
Sudbury Insulation Solutions
Insulation·Sudbury·901 Front St
Not yet reviewed on Google
Sudbury Insulation Services
Insulation·Sudbury·567 College Ave
Not yet reviewed on Google
Eco-Friendly Insulation Co.
Insulation·Windsor·915 Wyandotte St E
4.4(0 reviews)
InsulateMax Solutions
Insulation·Welland·657 Steel Rd
4.1(0 reviews)
Sudbury Insulation Contractors
Insulation·Sudbury·901 Front St
Not yet reviewed on Google
Ottawa Insulation Pros
Insulation·Ottawa·123 Bayview Drive
Not yet reviewed on Google
Insultech Ottawa
Insulation·Ottawa·456 Rideau Street
Not yet reviewed on Google
Green Insulation Ottawa
Insulation·Ottawa·789 Bank Street
Not yet reviewed on Google
Ottawa Insulation Services
Insulation·Ottawa·123 King Street
Not yet reviewed on Google
Insulation Cost Guide — Ontario (2026)
Typical price ranges for insulation work in Ontario. Get at least 3 quotes to compare.
Attic Insulationaverage home attic
$1,500$3,000$6,000
Batt Insulationper sq ft
$1$2$3
Spray Foamper sq ft
$3$5$8
Blown Infull attic
$1,500$2,500$4,500
Basement Wallsfull basement
$1,500$3,000$5,000
Prices in CAD. Based on typical Ontario contractor quotes, 2026. Actual costs vary by scope, materials, and access.
Insulation Licensing in Ontario
Required Licence
No mandatory Ontario licence
Insulation contractors in Ontario are not regulated but should carry liability insurance and WSIB. Spray polyurethane foam (SPF) insulation requires trained and certified applicators under the Canadian Urethane Foam Contractors Association (CUFCA). Insulation upgrades may qualify for Canada Greener Homes Grant rebates.
Red Flags to Watch For
- No insurance
- Can't specify R-value or product used
- Won't air-seal before insulating
- No CUFCA certification for spray foam
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Frequently Asked Questions — Insulation Contractors
- How many insulation contractors are in the directory?
- Our directory lists 80 verified insulation contractors across 10 cities in Ontario.
- What is the average rating for insulation contractors?
- The average Google rating for insulation contractors is 4.4 stars based on 0 combined reviews.
- Do insulation contractors need a licence in Ontario?
- No mandatory Ontario licence. Insulation contractors in Ontario are not regulated but should carry liability insurance and WSIB. Spray polyurethane foam (SPF) insulation requires trained and certified applicators under the Canadian Urethane Foam Contractors Association (CUFCA). Insulation upgrades may qualify for Canada Greener Homes Grant rebates.
- How much does insulation work cost in Ontario?
- Costs vary by project and location. Attic Insulation: $1,500-$6,000 (average home attic). Batt Insulation: $1-$3 (per sq ft). Spray Foam: $3-$8 (per sq ft). Get at least 3 quotes.
- How do I find a good insulation contractor?
- Check Google reviews, verify WSIB coverage at wsib.ca, confirm they pull required permits, get 3 written quotes, and never pay more than 10-15% deposit upfront.
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