Weather Seals and Drafts in Upland Garage Doors

By Upland Garage Door Pros · Published October 28, 2026 · Updated October 28, 2026

The Situation

Most garage doors in Upland went up somewhere between 1956 and 2007, with the bulk of the stock dating to the 1960s and 70s. That matters for seals because the rubber and vinyl gasket on the bottom of a door, and the weatherstrip along the sides and top of the jamb, is not built to last fifty years. On a door from that era, the bottom astragal has usually been replaced once already, sometimes twice, and whatever is on there now is likely hardened, cracked, or pulled loose from the track that holds it.

We see this across the older neighborhoods close in and out toward the newer tracts near the edges of town. The symptom is the same everywhere: a visible gap under the door when it's closed, daylight showing around the sides, or a draft you can feel standing a few feet back. On a slab floor that's settled slightly over sixty years, the gap often isn't even - thicker on one side than the other - which is a seal problem compounding a leveling problem.

This isn't a structural issue. It's a wear part that nobody thinks about until it fails.

Doing Nothing For Now

A worn seal by itself won't strand your door or burn out your opener. If the gap is small and even, and the door still opens, closes, and reverses the way it should, you can leave it through a full season without real risk. Upland sits in a moderate heat band rather than an extreme one, so a drafty door isn't pushing your cooling costs the way it might somewhere with harsher summers - it's more a comfort and dust issue than an emergency.

The honest trade-off: a bad seal lets in dust, pollen, and small critters looking for a way into a garage, and on older 1960s-70s construction, that garage often connects directly to a laundry room or interior door. If yours doesn't, the urgency drops further. We won't tell you a cracked bottom seal needs same-week attention when it doesn't. Replace it when it's convenient, not because someone put a deadline on it.

When to Get Help

Call it in when the gap under the door is uneven enough that the seal no longer sits flat against the slab anywhere, or when the side weatherstrip has pulled away from the track enough that you can see into the garage from outside in daylight. On the older end of the 1956-2007 build range, we also check the astragal retainer itself - on some of these doors it's a thin aluminum strip that's corroded or bent, and no amount of new rubber will seat right in a bent track.

If you're also hearing the door bind, catch, or drag near the bottom when it closes, that's not a seal problem anymore - that's track or roller wear, and it should get looked at before you spend money on weatherstrip that won't solve the real issue. We'll tell you straight if what you're describing is a $30 part or something bigger.

How Local Conditions Play In

Upland's climate band is moderate heat, not the kind of extreme swing that cracks rubber seals in a single summer. That's actually good news for seal life here compared to hotter desert-adjacent areas - but it also means a seal that looks fine from across the garage can still be doing a poor job, because heat damage isn't forcing the issue the way it would elsewhere.

The bigger factor is simply age of the housing stock. With most doors and door hardware in this service area dating to the 1960s and 70s, the seals you're looking at now are very likely not original, but whatever replacement went in last was matched to a track system from that era - sized and shaped to specs that modern seal stock doesn't always match exactly. That's the one limitation worth naming here: on some of these older tracks, a universal seal from a hardware store won't seat the way a profile-matched one will, and you end up re-doing the job within a year. We check the track profile before we quote a seal replacement, not after.

Frequently asked questions