One and a half storey houses with knee walls, which are the most commonly botched attic in Ontario.
Peterborough is full of the one-and-a-half storey house: a steep roof, rooms in it, and short vertical knee walls with a triangular void behind them. It is the attic people get wrong most often. Blowing the flat ceiling and ignoring the knee wall leaves the upstairs bedrooms cold no matter how deep the flat part goes, because the knee wall is the surface those rooms actually touch. Doing it properly means insulating and air-sealing the knee wall itself and the floor void behind it, and that is not a harder job — it is just one that has to be recognised before anyone quotes.
Peterborough and the Kawarthas are booked by appointment, often grouped with Lindsay and Oshawa dates.
Typical lead time: By appointment, usually within two weeks. Nothing about the rebate changes with distance — the programme is province-wide — but the diary does, and autumn fills before anything else.
No energy assessment, one measure, and the tier set by the depth we measure before we start.
| What is up there now | Upgraded to | Maximum rebate |
|---|---|---|
| R–12 or less — under about 4 inches | R–50 | $1,250 |
| R–12 to R–25 — about 4 to 8 inches | R–50 | $1,000 |
| R–25 to R–35 — about 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.
You get the depth, the tier, the figure and the photographs whether or not you use us.
Related
Book an attic check
You get the depth, the tier, the dollar figure and the photographs, whether or not you go ahead with us.