Service area · Montérégie
Attic insulation in Saint-Jean-sur-Richelieu
Saint-Jean-sur-Richelieu brings together five former municipalities and four building eras, three of them between 25.9% and 28.1%. Isolation Cornerstone visits the attic for free, from Iberville to L’Acadie, then sends a written quote with no pressure.
- 18.2% Before 1961
- 27.9% 1961 to 1980
- 28.1% 1981 to 2000
- 25.9% Since 2001
Single-detached houses: 50.1% · semi-detached or row houses: 5.4%
Share of the 42,910 private households, 2021 census (Statistics Canada). Our office on rue Lacordaire is 55.8 km away, about 53 minutes by car.
Four eras under a single city
In 2021, 18.2% of homes dated from before 1961, 27.9% from 1961 to 1980, 28.1% from 1981 to 2000 and 25.9% from 2001 on. The present city comes from the 2001 merger of Saint-Jean-sur-Richelieu, Iberville, Saint-Luc, L’Acadie and Saint-Athanase, and the Richelieu still runs between Saint-Jean and Iberville.
The attic of a pre-1981 house may keep yellowed batts, thin and packed down. After 1980, the first insulation may have aged. Either way the method is the same: air leaks sealed, a baffle at each soffit, a weatherstripped hatch, then blown-in fibreglass at R-51 minimum.
One home in two is a detached house
With 50.1% single-detached houses and 60% of households owning, Saint-Jean-sur-Richelieu has plenty of roofs that LogisVert can target. Hydro-Québec’s program asks for a house heated mainly with electricity, and roof insulation done together with caulking. The roof has to reach R-50 everywhere, and Hydro-Québec makes the call. See the LogisVert rebate page.
FAQ
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- My Iberville house dates from 1985. How does the attic visit work?
- The visit is free, at the home’s address, and a written quote follows, with no pressure. On the job, the ceiling air leaks are sealed first, then the bathroom, range hood and dryer ducts are directed outdoors before the insulation is blown in.
- Is it better to blow new insulation over the old rather than strip it all out?
- Depends on what is underneath. A blocked soffit or warm air leaking through the ceiling would stay hidden under the new layer, so Isolation Cornerstone fixes those first, then blows. Vermiculite is never covered over: it comes out first.
- How long does the work take?
- The exact time is given with the quote, once the attic has been seen. On the day of the work, the house is protected with tarps and cleaned before the crew leaves.
Get your free quote
We come and look at your attic in Saint-Jean-sur-Richelieu: the visit is free, and a written quote follows, with no pressure.
Or call us at (438) 544-6512