The Fix-It Playbook — Attic Air-Sealing & Insulation Top-Up

The attic is where most winter heating dollars actually escape — not through the walls people weatherstrip, but through the ceiling nobody looks at.

Inside: Step 1: Measure what you actually have · Step 2: Seal the big holes first · Step 3: The can-light problem · Step 4: Add insulation on top · Step 5: Don't block the ventilation · The honest cost comparison · When to stop and call a pro · Troubleshooting · Printable attic checklist.

Doing it yourself: $50–150 for air-sealing materials; roughly $1–2 per sq ft for a blown-in top-up with a free rental blower.
Calling a pro: $250–750 for air-sealing; $1,700–2,500 for a full insulation job.

7 pages of labeled diagrams, parts lists and real numbers — no filler, no 40-minute video. Temperatures and measurements in both Fahrenheit/Celsius and feet/meters, so it works wherever you are. Ends with a printable checklist.

Instant PDF download: print it for the garage or follow it on your phone with the parts in hand. Yours to keep, no subscription.

Need more than this one job? The Draft-Proof Kit bundles all 5 building-envelope guides — 28 pages — for $14.