Quebec · Energy · checked September 28, 2026

Attic insulation inspections in Québec City

The attic is usually the cheapest big energy fix in a house, and the inspection decides how to do it: how much insulation is there, where air leaks through the ceiling, and whether anything up there must not be disturbed.

Get matched in Québec City → What an attic inspection checks
Loose-fill insulation between attic joists, a yellow ruler showing its depth and frost on the roofing nails above

Cost

Included in an evaluation

Houses built before 1991

70%

Heating degree-days

4,754

Common finding

R-10–20 vs R-50–60 target

How Québec City is built

Québec City's houses by when they were built Ten house shapes, one for each tenth of Québec City's 121,435 houses. Before 1961: 20%, 1961–1990: 50%, 1991–2000: 11%, 2001 or later: 19%. Older houses glow hotter.
  • Before 1961 20%
  • 1961–1990 50%
  • 1991–2000 11%
  • 2001 or later 19%
Each house stands for one in ten of Québec City's 121,435 houses (single-detached, semi-detached, row and duplex), drawn by when it was built. The glow shows the usual pattern: older houses tend to be leakier and less insulated. Snowfall scales with heating degree-days. Sources: Statistics Canada 2021 Census (table 98-10-0233-01), NRCan HOT2000 climate data.

What inspections find in Québec City attics

Of Québec City's 121,435 houses (single-detached, semi-detached, row houses and duplexes), 20% were built before 1961 and 70% before 1991, according to the 2021 Census. Attics in older houses commonly have a fraction of today's recommended insulation, and top-ups done over the years often buried air leaks instead of sealing them first.

Québec City gets about 4,754 heating degree-days a year and has a winter design temperature of −24.8°C, according to NRCan's HOT2000 climate data for Ste-Foy. That's about 21% more heating demand than the middle of the 70 cities we cover. The colder the climate, the faster added attic insulation pays for itself.

Vermiculite. Loose, pebbly, grey-brown or silver-gold insulation may contain asbestos. Health Canada's advice is not to disturb it; have it sampled before any attic work. Asbestos and vermiculite testing in Québec City

The right order for the work

  • Seal the air leaks first: top plates, pot lights, plumbing stacks, the hatch.
  • Fix ventilation baffles so new insulation doesn't block soffit vents.
  • Then top up the insulation. Burying unsealed leaks under new insulation wastes much of the benefit.

What an attic inspection checks.

NRCan-licensed service organizations serving Québec City

In Quebec, EnerGuide evaluations for existing homes run through the provincial Rénoclimat program; the organizations below are the ones NRCan lists for Québec City postal codes.

Every EnerGuide evaluation includes an attic inspection: insulation depth, air leaks and red flags such as vermiculite or knob-and-tube wiring.

Source: NRCan list of licensed service organizations, checked September 28, 2026. Call to confirm your street is covered and ask about wait times.

Insulation programs in Québec City

Provincial · needs an evaluation Rénoclimat (Quebec) Quebec's audit-linked path: an assigned evaluator for $150 + tax (refunded except the tax when you receive assistance), then rebates for insulation, air sealing, doors and windows Open Provincial Hydro-Québec LogisVert Heat pump grants scaled to capacity — $50–$120 per 1,000 BTU/h — plus appliances and solar, no audit needed Open Federal CMHC Eco Improvement premium refund 25% back on your CMHC mortgage insurance premium after $20,000 of energy renovations Open Federal Canada Greener Homes Affordability Program Free retrofits for low-to-median-income households in BC, Manitoba, Nova Scotia, PEI and Quebec — not available in Ontario Open · deadline

Attic insulation inspection in Québec City: common questions

How much attic insulation should a Québec City house have?

Advisors commonly target around R-50 to R-60 in attics. Your EnerGuide report gives the recommendation for your house.

Can I top up the insulation myself?

Only after the air leaks are sealed and you've confirmed there is no vermiculite. The inspection tells you both.

Will more insulation stop ice dams?

Insulation helps, but ice dams are mostly caused by warm air leaking into the attic. Air sealing is the bigger fix.

Attic insulation inspection near Québec City

Attic insulation inspection in Lévis13 kmAttic insulation inspection in Trois-Rivières113 kmAttic insulation inspection in Sherbrooke167 kmAttic insulation inspection in Saguenay172 kmAttic insulation inspection in Terrebonne221 km All 70 cities →

Sources

Checked September 28, 2026. Census figures are for the municipality (Quebec); climate data is NRCan's HOT2000 station Ste-Foy (7 km away).

Get matched with a registered advisor in Québec City

Tell us your postal code and what you’re planning. We’ll connect you with one licensed service organization serving your area. No spam, no shared lead lists.

Email us what you’re planning, your postal code and the type of building (a house, a duplex or triplex, or a larger multi-unit building) — we’ll reply with registered service organizations for your area and which rebates apply.

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