Adding to what is already there, when what is already there is worth keeping.
If the material in your attic is dry, clean and undisturbed, we blow straight over it. The depth adds up, the job is cheaper than a removal, and nothing goes to landfill. Most Toronto attics built before 1990 are in exactly that state: somebody put four to eight inches down, it has settled, and nobody has touched it since.
The upgrade takes it to R–50 — about sixteen inches — and the rebate tier is set by the depth we measure before we start, not by what goes in.
Topping up over failed material is throwing money away. Wet insulation stays wet under a new layer. Rodent-fouled material keeps smelling. Insulation compacted to an inch has lost the air that gave it its R-value and adding to it just hides the problem. We photograph what we find and tell you which of the two jobs you are looking at before you commit to either.
| Measured now | Upgraded to | Maximum |
|---|---|---|
| R–12 or less — under 4 inches | R–50 | $1,250 |
| R–12 to R–25 — 4 to 8 inches | R–50 | $1,000 |
| R–25 to R–35 — 8 to 11 inches | R–50 | $800 |
Amounts are set by Enbridge Gas and Save on Energy and are quoted from the programme pages — attic stream, assessment stream — checked September 2026.
Yes. Blown cellulose over existing fibreglass batts is a normal and effective assembly, and the added density helps slow air movement through the layer beneath.
Blown material is light. It does not meaningfully compress the layer underneath, which is why the depths add.
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You get the depth, the tier, the dollar figure and the photographs, whether or not you go ahead with us.
