Attic Insulation
Complete attic insulation to reduce your heating and cooling costs.
Up to 30% of a home's heat loss escapes through the attic. Proper insulation can reduce your heating bills by 10–25%. Toitures Boulet offers several insulation solutions tailored to your home, budget and energy performance goals.
Problems we solve
- Heating and cooling bills abnormally high.
- Second floor too hot in summer, too cold in winter, uncomfortable year-round.
- Recurring ice dams on the roof in winter.
- Old, compressed or damp attic insulation well below the recommended R-60.
- Rénoclimat or ÉcoRénov grant program requiring an upgrade.
30% of heat loss goes through the roof
The attic is responsible for 25 to 35% of the heat loss in a typical home. That's a lot, and it's also the easiest fix: adequate attic insulation has one of the best returns on investment in residential renovation, often paying itself back in energy savings alone within five years.
In homes built before 1990 it's common to find insulation levels well below current standards. A house insulated to R-20 when it should be at R-50 is losing nearly half the heat it should be keeping — and you're paying the difference on every Hydro bill.
Our approach: diagnose first, then act
Before we recommend anything, we do a complete attic inspection. We measure the current R-value, check the ventilation (a poorly-ventilated attic causes condensation that wrecks insulation), look for air leaks around electrical penetrations, access hatches and plumbing vents, and check for moisture or mould.
This step is essential. Adding insulation on top of wet insulation or in a poorly-ventilated attic is an expensive mistake: you bury the problem without fixing it, and you guarantee bigger damage down the line.
Blown cellulose or mineral wool
For attics only accessible through a hatch, blown cellulose is almost always the best choice. It fills every corner and cavity (unlike batts), offers excellent thermal performance at a low price, and is made from recycled paper treated with borate — environmentally friendly and fire-retardant.
For attics where you plan to move around, or for targeted top-ups over existing insulation, Owens Corning mineral wool batts are a great option. Fire-resistant, non-compressing, and still effective even in slightly damp conditions.
We walk you through the pros and cons of each option based on your specific situation, and we calculate the cost and expected return of each scenario. That way you have all the data you need to make an informed decision.
Why choose Toitures Boulet
- R-60 target compliant with Quebec Building Code and grant requirements.
- Contractor recognised under Rénoclimat and Logis-Vert programs.
- Blown cellulose or fiberglass: we recommend the material suited to your home.
- Ventilation baffles and sealed penetrations — insulation alone isn't enough.
Our process
From your first call to the final warranty — clear, transparent, no surprises.
- 1
Contact & on-site inspection
We respond to your request within 24 business hours and schedule a free on-site visit to assess your roof and understand your goals.
- 2
Written, itemized estimate
You receive a clear, line-by-line estimate with no hidden fees. It remains valid for 90 days and covers materials, labour, and applicable warranties.
- 3
Project scheduling
Once the estimate is approved, we agree on an approximate date and order materials. We confirm the exact date closer to the work based on weather and current scheduling.
- 4
Professional execution
Our crews work methodically and safely, protect your property with tarps and plywood, and stick to the agreed timeline.
- 5
Cleanup, final inspection & warranty
We sweep every nail with a magnet, do a final walkthrough with you, and issue your warranty documents. Your project is fully complete.
What's included
FAQ
What R-value should I aim for in my attic?+
The current Quebec standard is R-50 minimum for new attics, and we recommend reaching this value during any upgrade.