Top 5 Insulation Contractors
in Montreal
We researched Insulation Contractors serving Montreal, Quebec, comparing Google ratings and review history, documented services, local presence, experience and other publicly available business information. FiveBest selected businesses for this Montreal Insulation Contractors comparison.
↗ Montreal’s featured insulation contractors have a FiveBest Score above the Quebec benchmark.
Detailed FiveBest Research is not yet available for this business.
Detailed FiveBest Research is not yet available for this business.
Detailed FiveBest Research is not yet available for this business.
Detailed FiveBest Research is not yet available for this business.
Detailed FiveBest Research is not yet available for this business.
Montreal insulation contractors score above the Quebec benchmark
Featured insulation contractors in Montreal have a median FiveBest Score™ of 76/100, compared with 69/100 for featured insulation contractors across Quebec.
Among nearby FiveBest markets, insulation contractors in Laval (80/100) and insulation contractors in Brossard (79/100) score higher, while Longueuil (76/100) is close to Montreal.
Comparison based on profiles currently featured by FiveBest in this category with an available FiveBest Score™.
How we researched Insulation Contractors in Montreal
FiveBest reviews publicly available information for Insulation Contractors serving Montreal.
- Google rating and review history
- Documented services
- Years in business when available
- Montreal and surrounding service coverage
- Business website and online presence
- Independent reputation signals when available
Research last updated: September 2026
Common Services
- Attic insulation in Montreal
- Blown-in insulation in Montreal
- Spray foam insulation in Montreal
- Wall insulation in Montreal
- Basement insulation in Montreal
- Air sealing in Montreal
FiveBest Match™
Coming SoonFiveBest Match™ will soon help you compare businesses based on your specific needs.
FiveBest Match™ — Coming Soon 🔒How to Choose an insulation contractor in Montreal
Compare Montreal insulation contractors for attic insulation, older homes and plexes, blown-in insulation, spray foam, wall and basement insulation, air sealing and energy-efficiency upgrades.
Compare Montreal insulation contractors for attics, older homes, plexes, wall insulation, spray foam, air sealing and insulation upgrades.
Ask how current insulation, air leakage, moisture and ventilation conditions will be assessed before adding material.
Confirm insulation type, target thermal value, installed depth or thickness and areas included.
Ask whether air sealing or moisture problems should be corrected before insulation is installed.
Check removal, air sealing, insulation, ventilation baffles, access work, cleanup and disposal.
For spray foam or other specialized products, confirm trained installation, ventilation and occupant instructions.
Ask what documentation is provided for applicable energy programs and what product or workmanship warranties apply.
What Affects Insulation Costs
- Area being insulated
- Existing insulation
- Insulation material
- Target R-value
- Removal of old material
- Air sealing requirements
- Accessibility
- Ventilation modifications
- Moisture remediation
- Cleanup and disposal
Questions to Ask an Insulation Contractor
- How will you assess the existing insulation and air leakage?
- What insulation material and target R-value are specified?
- Is old insulation removal required?
- Is air sealing included?
- How will attic or roof ventilation be maintained?
- Are there moisture issues to correct first?
- What documentation is provided for applicable rebates?
- What product and workmanship warranties apply?
Frequently Asked Questions
Insulation costs in Montreal depend on the area to cover, insulation material, existing insulation, required R-value, accessibility, air-sealing work and whether old insulation must be removed. A site inspection helps determine the appropriate scope and price.
The best option depends on the attic condition, existing insulation, ventilation, moisture control, target R-value and budget. Blown-in cellulose or fibreglass are common options, while spray foam may be appropriate in specific assemblies.
Improving attic insulation and air sealing can reduce heat loss and improve comfort when the existing insulation is inadequate. Actual savings depend on the home, climate, heating system and the quality of the installation.
Not always. Existing insulation may sometimes remain if it is dry, clean and in good condition. Removal may be recommended when insulation is contaminated, wet, damaged, compressed or interfering with repairs or air sealing.
Compare experience with the insulation system you need, inspection process, proposed R-value, air-sealing scope, ventilation considerations, product specifications, warranties, cleanup, applicable certifications and recent local reviews.
Programs and eligibility can change over time. Ask the contractor whether current provincial, utility or federal efficiency programs may apply and confirm eligibility with the program provider before starting work.