Best insulation companies on the South Shore of Montreal
Looking for the best insulation companies on the South Shore of Montreal? We've ranked 12 insulation companies on verified customer reviews and the Prix Excellence Client award, so you can choose with confidence, not guesswork.
- 91
- Insulation companies
- 4.7
- Avg. rating
- 124
- Avg. reviews
- 53%
- Owner replies
Les Entreprises Kass Inc
4.968 reviewsLa Prairie100% review reply rate5 years of activityLes Entreprises Kass Inc is overwhelmingly praised for its professional, high-quality insulation and attic work, with exceptional customer service and integrity. One serious complaint about a furnace installation and after-sales service stands out as an anomaly.
62/100
InputKit score
Climax inc
4.959 reviewsBoucherville100% review reply rate3 years of activityCustomers consistently praise Climax Inc for fast, professional, and courteous installation of heating and cooling systems, with standout after-sales support and competitive pricing.
62/100
InputKit score
RenovA+ Décontamination | Moisissures, Vermiculite et Isolation d'entretoit
5.039 reviewsLongueuil100% review reply rate3 years of activityCustomers consistently praise this company for its professional, reassuring service from initial contact through project completion, with particular recognition for staff availability, clear communication, and meticulous cleanup.
61/100
InputKit score
Isolation Equinoxe Plus
5.0113 reviewsSaint-Hubert99% review reply rate9 years of activityCustomers consistently praise Isolation Équinoxe Plus for professional, thorough insulation work—especially spray foam basement insulation—delivered by a friendly, meticulous owner and team at competitive prices, with many reviewers highly recommending them.
61/100
InputKit score
Isolation Toit - Rive sud - Delson
5.070 reviewsDelson100% review reply rate2 years of activityCustomers consistently praise Isolation Toit for highly professional attic insulation, window and door caulking work, with excellent communication, competitive pricing, and meticulous cleanup. The team, especially Alexandru, is noted for being punctual, knowledgeable, and responsive, often exceeding expectations.
60/100
InputKit score
Climax inc - Climatisation, Chauffage, Thermopompe Longueuil
4.9121 reviewsLongueuil100% review reply rate4 years of activityClimax Inc. is highly regarded for professional, efficient HVAC installations and outstanding after-sales service, though a few customers reported missed appointments and poor follow-up.
60/100
InputKit score
ISOLAM INC.
5.042 reviewsVarennes6 years of activityCustomers consistently praise Isolam Inc. for professional, high-quality insulation work, punctuality, cleanliness, and honest, knowledgeable service with no surprise fees.
56/100
InputKit score
Metrotec / PGB Isolation
5.023 reviewsBoucherville9 years of activityCustomers consistently praise Metrotec / PGB Isolation for its professional, courteous, and efficient insulation work, with many long-term clients recommending the company without hesitation.
56/100
InputKit score
Monsieur Calfeutrage
4.820 reviewsSaint-Hubert11 years of activityCustomers consistently praise Monsieur Calfeutrage for professional, precise, and clean caulking work at competitive prices, though one reviewer reported poor after-sales service when a leak was not resolved.
55/100
InputKit score
Prévention Isolation
4.353 reviewsBoucherville6% review reply rate3 years of activityPrévention Isolation is widely praised for professional, efficient insulation work and outstanding customer service, but a minority of customers report serious issues with follow-up, reliability, and incomplete work.
52/100
InputKit score
IsoTrust
5.023 reviewsBouchervilleCustomers consistently praise IsoTrust for professional, efficient attic insulation and sealing work, highlighting courteous staff, thorough communication, and helpful guidance on available subsidies.
51/100
InputKit score
A1 isolation - Varennes
4.731 reviewsVarennes10% review reply rateCustomers praise A1 Isolation for its professionalism, clear pricing and high‑quality foam work, though a few note occasional scheduling hiccups.
54/100
InputKit score
How we rank insulation companies on the South Shore of Montreal
Rankings combine verified Google reviews, owner reply rate, and the InputKit Prix Excellence Client award, built on 12 months of real customer-experience data. Businesses can't pay to rank higher.
Understanding the ranking process →Frequently asked questions
- How are best insulation companies on the South Shore of Montreal ranked?
- We combine verified Google reviews, owner reply rate, and the InputKit Prix Excellence Client award, using 12 months of real customer-experience data. Position on this list cannot be bought.
- How many insulation companies are ranked on the South Shore of Montreal?
- This page currently ranks 12 insulation companies that meet our guide visibility criteria. The list updates as reviews and award data change.
- Can a business pay to rank higher?
- No. Advertising or sponsorship does not change ranking position or Prix Excellence Client eligibility.
- Where does the data come from?
- Public Google review signals plus InputKit customer-experience data (including CSAT, NPS, and recovery) collected over the last 12 months.