Attic Insulation in Toronto, Ontario
Blown-in and batt insulation topped up to the R-60 recommended for Ontario homes, with the air sealing and ventilation work that makes it actually perform.
The local picture
Toronto's pre-war houses were built with attics that were never designed to hold insulation, and the post-war bungalows across Etobicoke, North York and Scarborough were topped up once, decades ago, to a standard half of today's. Both end up in the same place: an attic measuring well below R-60, with air escaping through the top plates before the insulation gets a chance to work.
Pre-war housing in the core, post-war bungalows in the inner suburbs
Service details
How the job runs
Attic inspection
Depth measured, ventilation checked, moisture and pest damage noted.
Air sealing first
Top plates, pot lights and penetrations sealed — insulation alone does not stop air movement.
Ventilation protected
Baffles installed so soffit vents keep working after the top-up.
Insulation installed
Blown to the specified depth, with depth markers left in place for verification.
What we see in these homes
- Knob-and-tube-era attics with little or no air sealing above the top plate
- Solid masonry and balloon-frame walls with uninsulated cavities
- Finished basements insulated before vapour control was understood
Typical ranges
What attic insulation typically costs in the GTA, what moves the number up or down, and what our own quote includes. These are market ranges for orientation — your price comes from the inspection, not from this page.
Attic Insulation Cost in Toronto & the GTAQuestions about this service
How much insulation should my attic have?
R-60 is the current recommendation for this climate zone. Many GTA homes built before the 2000s sit well below that.
Do I need to remove what's there?
Not always. If the existing material is dry, clean and pest-free, a top-up is often the better value.
Will this help in the summer too?
Yes. The same layer that keeps heat in during winter keeps attic heat out of your rooms in July.