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Insulation in Peterborough

One and a half storey houses with knee walls, which are the most commonly botched attic in Ontario.

Four inches of attic insulation beside sixteen inches, drawn to the same scale As we usually find it R–12 About 4 inches, settled Ontario code in the 1970s What the rebate pays for R–50 About 16 inches, blown Current Ontario standard 16″ 8″ 4″ 0 Drawn to one scale. Depth is measured at the joist, away from the hatch and the eaves.

The tier is set by the depth we measure, not by the postcode

What we find in Peterborough attics

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.

Getting a crew to you

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.

What the attic stream pays

No energy assessment, one measure, and the tier set by the depth we measure before we start.

What is up there nowUpgraded toMaximum rebate
R–12 or less — under about 4 inchesR–50$1,250
R–12 to R–25 — about 4 to 8 inchesR–50$1,000
R–25 to R–35 — about 8 to 11 inchesR–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.

What we will tell you about your house

  • The measured depth, taken at the joist rather than at the hatch.
  • Which tier that puts you in, and the dollar figure with the fifty per cent cap applied.
  • Whether the soffits are blocked, because deep insulation over blocked soffits causes frost.
  • Whether the bath fans vent outside or into the attic.
  • If you are already over R–35, that the attic stream will not pay — and what is still worth doing instead.

You get the depth, the tier, the figure and the photographs whether or not you use us.

Related

Where to go next

Book an attic check

Someone goes up, measures, and photographs it.

You get the depth, the tier, the dollar figure and the photographs, whether or not you go ahead with us.