Service area · Laval
Attic insulation in Laval
In Laval, one home in three was built between 1961 and 1980, while the farmland of Île Jésus was giving way to suburbs. Isolation Cornerstone insulates those attics, in Chomedey as much as in Pont-Viau or Sainte-Rose, and the visit is free.
Chomedey was a city before it became a neighbourhood
Chomedey was formed in 1961 from the merger of three municipalities. Saint-Martin, Renaud and L’Abord-à-Plouffe joined four years before the fourteen municipalities of Île Jésus became Laval on August 6, 1965. People still call the neighbourhoods by those old names.
Up in the attic, that history means a very mixed housing stock: 14.2% of Laval homes predate 1961 and 24.4% were built since 2001. In a house from the 60s and 70s, the original insulation may have packed down between the joists. If your house is older and you have seen silvery-gold granules up there, stay out of the attic: vermiculite can contain asbestos, and it comes out before anything gets insulated.

- 14.2% Before 1961
- 32.7% 1961 to 1980
- 28.7% 1981 to 2000
- 24.4% Since 2001
Single-detached houses: 44.8% · semi-detached or row houses: 12%
Share of the 169,785 private households, 2021 census (Statistics Canada). Our office on rue Lacordaire is 19.9 km away, about 23 minutes by car.
LogisVert is for houses, and Laval has a lot of them
In the 2021 census, 44.8% of Laval homes were single-detached houses and 12% were semi-detached or row houses. Those are the homes Hydro-Québec’s LogisVert measure is aimed at, on two conditions: the house is heated mainly with electricity, and the roof insulation is done together with the caulking. Isolation Cornerstone handles both in the same project. The roof has to reach R-50 over its whole surface; we blow in R-51 at minimum, and Hydro-Québec decides who qualifies. The details are on the LogisVert rebate page.
FAQ
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- Do you come out to Chomedey for the visit?
- Yes. Chomedey is in Isolation Cornerstone’s service area like the rest of Laval, and the visit is free, at your address. A written quote follows, with no pressure.
- My house was built after 2000. Is its attic already at R-50?
- Not necessarily everywhere. LogisVert asks for R-50 over the whole roof surface, corners included, and the year a house was built does not guarantee it. After Isolation Cornerstone’s work, depth rulers stay set in the insulation, so you can read the depth yourself.
- Blown-in fibreglass or batts: which is better in the attic?
- Blown-in fibreglass, at Isolation Cornerstone. It reaches the corners nobody can crawl into and forms an even layer from wall to wall, at R-51 minimum, with depth rulers left standing in it so you can read the depth yourself.
- Is the visit for the quote really free?
- Yes. Isolation Cornerstone comes to look at the attic at your address and gives you a written quote, at no charge and with no pressure.
Get your free quote
We come and look at your attic in Laval: the visit is free, and a written quote follows, with no pressure.
Or call us at (438) 544-6512