Insulation Quotes in Montreal: Attic, Walls & Basement

A well-insulated home is more comfortable, quieter and cheaper to heat. In Montreal and surrounding areas, much of the housing stock is several decades old: bungalows, duplexes and triplexes often have an under-insulated attic, poorly performing walls or a cold, damp basement. With our long winters and humid summers, good insulation makes a real difference all year round.

Insulation is about more than adding batts. Air sealing, the vapour barrier and attic ventilation all play a key role in preventing condensation, mould and ice dams on the roof. A qualified contractor looks at the whole picture before recommending a solution.

Insulation quotes: projects we cover

A request for insulation quotes can cover one or several parts of your home:

• Blown-in cellulose or fibreglass attic insulation
• Exterior wall insulation, from the inside or the outside
• Basement wall and slab insulation
• Crawl space insulation
• Spray polyurethane foam
• Rim joist insulation
• Air sealing and vapour barrier installation
• Old insulation removal and attic ventilation upgrades
• Soundproofing between units

How it works

1. Describe your project. Fill out our form in about 2 minutes: areas to insulate, type of home, approximate year built and city.
2. We contact contractors. Your request is sent to up to 4 qualified insulation contractors in your area.
3. You compare and choose. You receive your quotes, compare them and choose the one that suits you. The service is free and comes with no obligation.

There is no need to make dozens of calls or repeat your project details: one request is enough. You then decide which contractor you want to work with, if any.

What affects the price

The cost of insulation work depends on several elements. Prices also vary by area, materials, size, access and season:

• The area to insulate and the target insulation value
• Type of insulation: cellulose, mineral wool, rigid panels or spray foam
• Access to the attic, crawl space or wall cavities
• Removal of old or contaminated insulation
• Related work: ventilation, vapour barrier, air sealing
• Condition of the structure and any moisture issues
• Finishing work needed after insulating walls or the basement
• Time of year and crew availability

To compare your insulation quotes properly, make sure each one targets the same insulation value and covers the same areas. A lower quote may leave out air sealing, ventilation corrections or the removal of old insulation, all of which directly affect the result. Do not hesitate to ask each contractor to explain why they recommend a given material or method for your home.

How to choose a contractor

Insulation is technical work, and mistakes can lead to condensation or mould. Before signing, check the following:

• RBQ licence: the contractor must hold a valid licence from the Régie du bâtiment du Québec for the construction work they perform.
• Liability insurance: ask for proof of civil liability insurance.
• Written, detailed quote: it should list the insulation type and thickness, target insulation value, ventilation, vapour barrier, clean-up and schedule.
• Experience and reviews: read customer reviews and ask for references from homes similar to yours.
• Payment: never pay everything upfront. A reasonable deposit with the balance on completion is the safer option.

Tips before you insulate

• Start with the attic: heat rises, so the attic is often where a home loses the most, and the work is usually straightforward.
• Fix moisture first: in the basement, deal with water infiltration before insulating, or the problem will be hidden rather than solved.
• Pick the right season: attic work is more comfortable in spring or fall, away from summer heat.
• Financial assistance: assistance programs may be available, for example from Hydro-Québec or government energy-efficiency programs. Check which programs are currently in effect before you start, as some require a prior evaluation.
• Permits: some work requires a permit from your municipality, such as exterior insulation that changes the cladding. Check with your city.

A professional assessment is often the best starting point. A contractor who takes the time to inspect your attic, check for moisture and look at existing ventilation will give you a more accurate and useful quote.

Areas we serve

We handle insulation quote requests across Montreal and surrounding areas, including:

• Montreal and the West Island
• Laval
• Longueuil, Brossard and the South Shore
• North Shore: Terrebonne, Repentigny and Blainville
• Vaudreuil and Châteauguay

Get up to 4 free quotes

Better insulation means more comfort in winter and summer alike. Fill out our form in just a few minutes and get up to 4 free quotes from insulation contractors in your area, with no obligation.

Frequently asked questions

Which part of the house should I insulate first?

The attic is often the priority because heat rises and escapes there. A contractor can assess your home and advise you based on its condition.

Can I insulate a damp basement?

Moisture or water infiltration must be fixed first. Insulating over a water problem can encourage mould.

Are there grants for insulation?

Assistance programs may exist, for example from Hydro-Québec or government energy-efficiency programs. Check which programs are currently available and their conditions before starting.

Is the service free?

Yes. Requesting quotes is free and comes with no obligation, and you can receive up to 4 quotes from contractors in your area.

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Estimations.pro is a referral service and does not perform the work. Requirements (RBQ licence, municipal permits, assistance programs) can change: check with the relevant organizations.