My garage doubled as a workshop until December, when it became a refrigerator. Cold air poured in under the door so aggressively that I could feel it standing six feet away. A proper garage door seal kit cost about fifty dollars and required drilling into concrete. I did not want to do either of those things.

A pool noodle solved it in ten minutes for three dollars.

The Gap Under Your Garage Door Is Pouring Money Out

Most garage doors have a rubber seal at the bottom, but it wears out. It flattens, cracks, or just stops making full contact with the concrete. Even a quarter-inch gap runs the full width of a standard single door — that is roughly sixteen square inches of open space letting in cold air, leaves, bugs, and mice.

The Pool Noodle Fix

1. Measure the width of your garage door.
2. Buy a pool noodle. The thick, solid-foam kind — not the hollow wiffle-ball type.
3. Cut the noodle slightly longer than the door width.
4. Slice it lengthwise down one side — like you are butterflying a hot dog bun. Do not cut all the way through. You want a C-shape that can slide onto the bottom edge of the door.
5. Slide the noodle onto the bottom rubber seal of the garage door. Push it on firmly.

The foam compresses against the concrete when the door closes, filling every gap. No drilling, no adhesive, nothing permanent. If it does not work or you want it off for summer, pull it off in two seconds.

Caveats

This is a seasonal fix, not a permanent one. The noodle will compress over a few months and need replacing. A pool noodle costs three dollars. I buy two and replace mid-winter. The foam also does not hold up to being driven over — if the door closes on it hard enough to crush the foam flat, it will not spring back. Adjust your door’s close pressure if needed.

My garage was about ten degrees warmer after I put this in. For three bucks, that is a good return.