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 and 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 leave 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