Module 01

Tap the house — or pick a zone.

Where does a typical older Calgary home lose its heat?

The attic & roof — ~30%

Heat rises, and a settled insulation layer barely slows it. The biggest loss — and the cheapest to fix properly.

Takeaway: the attic is the biggest loss and the cheapest fix.

Module 02

Attic rain: tap each stage to see the real thing.

Raw photo: disconnected bath-fan duct blowing moist air into an attic

Stage 1 — a bath fan venting straight into the attic

Field photo

Takeaway: attic rain is an air-sealing + ventilation problem — not a roof leak.

Module 03

Drag the ruler — watch the coat get thicker.

Insulation depth

3.5 in ≈ R-9 Far below standard

Why "it was fine when we bought it" isn't fine now

Blown-in insulation settles for decades — R-value quietly drops even if nobody touched it. That's why we measure with rulers and show you the photos.

Takeaway: R-60 ≈ a half-metre of fluff. Most older attics have a fraction.

Module 04

Air sealing — flip the switch.

Raw photo: light leaking up around an old pot light housing seen from the attic — Before — light (and heat) pouring through

Raw photo: pot light housing neatly sealed with cured spray foam — Before — light (and heat) pouring through

Before sealing

Every pot light, hatch and plumbing hole is a chimney. Warm, moist air rides the stack effect straight through the insulation — your heating dollars and tomorrow's attic rain, leaving together.

Takeaway: if a quote doesn't say "seal first," it's half a job.

Module 05

Ventilation — the attic has to breathe.

Raw photo: a clean foam baffle installed between rafters keeping the air channel open — Baffled — the airway stays open

Raw photo: an eave bay stuffed solid with insulation, no air gap — Baffled — the airway stays open

Baffled & breathing

Baffles hold insulation back from the eaves so air sweeps in at the soffits and out at the ridge. The attic stays cold and dry all winter — exactly as designed.

Takeaway: insulation + sealing + ventilation = one system.

Module 06

Six questions. You've got this.

No grades · no email gate

Each answer comes with the why. Miss one? The modules are one click away.

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The Attic Academy