The Fix-It Playbook — Weatherstrip & Sweep Exterior Doors

The gap around your front door is costing you a space heater's worth of energy every month. The fix is a Saturday morning and about $30 a door.

Inside: Step 1: Find your leaks · Step 2: Choose the right weatherstrip · Step 3: Install jamb and head weatherstripping · Step 4: Install or adjust the door sweep · Step 5: Adjust the threshold · The door-won't-latch-in-cold fix · The honest cost comparison · When to stop and call a pro · Troubleshooting · Printable per-door checklist.

Doing it yourself: $15–40 in materials per door, under an hour per door.
Calling a pro: $75–200 per door for weatherstripping alone.

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.