Attic insulation
High-performance insulation up to R-60 to cut heat loss and make your home more comfortable.
- Up to R-60
- Top-up or full re-insulation
- LogisVert criteria
Attic insulation across QuebecHeat your home, not the sky.
We insulate your attic up to R-60, seal air leaks and fix ventilation and mould problems.
Rather talk to someone? (438) 235-8195
- RBQ licence 5819-5462-01
- Work done to LogisVert criteria
- RBQ licence 5819-5462-01Held by SS Construction Excavation. Verify on the RBQ website
- Free inspection with photosWe go up into the attic and show you what we see.
- Up to $1,500 with LogisVertIf your house is eligible. We explain the conditions.
- Warranted materialsCovered by their manufacturer's warranty.
Before and after
Slide across the photos to compare. Jobs done by our team.
BeforeAfter
BeforeAfter
BeforeAfter
To insulate the attic and caulk, with Hydro-Québec's LogisVert
Both jobs must be done. Here are the main conditions.
- You own a house: single-family, semi-detached, row house, mobile home or cottage.
- Electricity is the main heating source.
- The whole attic is insulated to R-50 (RSI 8.8) or more.
- Caulking is done wherever air leaks: windows, doors, hatch, range hood, fans, outlets and fireplace.
- The work is done by a company registered with the Registraire des entreprises and holding an RBQ licence.
- You apply online at logisvert.ca, no later than 9 months after the work.
Source: LogisVert participation guide (in French), version 1.10, September 15, 2026. Hydro-Québec decides on eligibility. SS Construction Isolation is not affiliated with Hydro-Québec.
Online estimate
How much does it cost?
Enter the size of your attic and the year your house was built: the price range shows up right away. The exact price is written up after the inspection, which is free.
Estimate your price
It's usually the same as the ground floor.
Year built
Preliminary quote1,000 sq. ft. attic
$3,600 to $4,400
Range before taxes · price confirmed in writing after the free inspection
- Soffits cleared and baffles installed
- Blown-in insulation up to R-60
- Caulking: inspection and sealing of air leaks
Eligible for LogisVert? Hydro-Québec pays you $1,500 after the work.
Free inspectionWritten price before the work
What affects the price
- The size of the atticOften the same as the ground floor.
- The insulation already thereThe less there is, the more has to be blown in to reach R-60. The year the house was built gives a good idea.
- The work needed firstRemoving soiled insulation, decontaminating the wood, sealing air leaks.
- AccessThe hatch, the height under the roof, the hard-to-reach corners.
Why SS Construction Isolation
R-60 in the attic
We blow in up to R-60. LogisVert requires R-50, so your attic keeps a margin.
Ventilation included
Clearing the soffits and installing baffles are included in the insulation price.
A price before the visit
The estimator gives you a range online. The exact price is written up after the inspection.
Across Quebec
We travel to every region, plus Ottawa and New Brunswick.
Your house is giving you signs
Check what you notice. We'll tell you what we'd look at first during the inspection.
Complete solutions for your home.
From insulation to decontamination, we work on the key parts of your home to make it more energy efficient, more airtight and longer lasting.
Spray foam
Continuous insulation that limits air leaks and makes your home more airtight.
- Rim joists
- Foundations
- Crawl spaces
Decontamination
Mould removal and treatment of contaminated materials, for a healthy home again.
- Mould
- Soiled insulation
- Fixing the cause
Caulking
Tight seals to limit drafts and energy loss.
- Windows and doors
- Hatch, range hood, outlets
- Required by LogisVert
Ventilation and soffits
Proper airflow to keep your attic dry and well ventilated.
- Soffits
- Baffles
- Dry attic
Not sure which service you need? We’ll see at the inspection, which is free.
Request an inspectionHow it works
From your first call to the invoice, you know what's coming.
You reach us
By phone or with the form. We book the inspection at a time that suits you.
Free inspection
We go up into the attic, measure the insulation, check the ventilation and take photos.
Written quote
The price, the work and the target R-value, in writing. You take the time to decide.
The work
We protect the way through your home, do the work and clean up before we leave.
Photos and invoice
You get the photos and an invoice with what LogisVert asks for. We help you apply.
Second opinion
Already have a quote?
Send it to us. We'll tell you if the planned work and the price are fair. It's free, with no commitment.
Across Quebec
We travel to every region of Quebec. We also work in Ottawa and New Brunswick.
- Montreal and Laval
- Quebec City and Lévis
- Trois-Rivières
- Saguenay
- Ottawa
- New Brunswick
Your city isn't on the list? Call us: we’ll come to you.
Frequently asked questions
Another question? [email protected]
How much does attic insulation cost?
It depends mostly on the size of the attic and the insulation already there. The estimator above gives you a range for your house. The exact price is written up after the inspection, which is free.
Why R-60 if LogisVert requires R-50?
R-50 is the program's minimum. At R-60, the attic keeps a margin and lets even less heat through.
Entretoit, grenier, combles: what do they mean?
In Quebec, you'll see these three French words on quotes. They all mean the attic: the space between the top-floor ceiling and the roof. That's the space we insulate.
How long does the work take?
Topping up an attic often takes one day. Decontamination and spray foam can take longer. The duration is written in the quote.
Will it make a mess in the house?
We protect the floors and the way to the hatch, and we clean up before we leave.
Can you blow insulation over the old insulation?
Yes, if it's dry, clean and free of vermiculite. If not, we remove it first and fix the cause of the problem.
Do you handle vermiculite?
Not without testing. Vermiculite can contain asbestos: have it tested by a lab before any work. We'll explain what to do at the inspection.
What warranty do you offer?
The materials we install are covered by their manufacturer's warranty.
Do you travel outside the big cities?
Yes. We travel all over Quebec, and we also work in Ottawa and New Brunswick.
Am I eligible for a grant?
In Quebec, if your house is mainly heated with electricity, LogisVert can pay $1,500 for roof insulation and caulking. See the conditions.
Free quote
Four fields. That's it.
We'll call you back to book the inspection. No account to create.
(438) 235-8195
- Free inspection, with photos.
- Written price before the work.
- Materials covered by the manufacturer's warranty.