In Connecticut, a garage door bottom gap can show up as water after heavy rain, cold drafts in winter, leaves blowing under the door, or signs that mice are getting inside. The tempting fix is to buy thicker rubber, but the best repair depends on why the gap exists. A seal problem, concrete problem, and crooked-door problem are three different things.

Start by looking at the shape of the gap

A straight gap across the full width of the door often points to worn bottom rubber or a floor that slopes away from the door. A gap on one corner can mean the door is not sitting level. If the door also looks tilted, rubs the jamb, or closes with a bang, treat it as a hardware issue instead of a weather seal issue.

When bottom rubber is enough

Bottom astragal can harden, split, shrink, or flatten over time. Replacing it can improve a door that is otherwise square, balanced, and closing evenly. This is common on older doors that have seen years of snow, salt, humidity, and freeze-thaw movement. Related sealing help lives under garage door weather stripping replacement CT.

When the door needs repair first

If the door is crooked, heavy by hand, noisy, or catching in the tracks, adding seal material can hide the symptom while the lifting system gets worse. Cables, drums, rollers, tracks, hinges, or springs may need attention. That is when the right page is garage door repair CT, not just a seal replacement.

What to check before calling

Take a photo from inside the garage with the door closed, then take one from outside at floor level. Note whether the gap changes after rain, snow, or direct sun. If the door will not close securely, or if the gap appeared suddenly after the door hit something, use the urgent route through emergency garage door repair CT.

FAQ

Why do mice or water get under a garage door?

Common causes include worn bottom rubber, uneven concrete, a crooked door, damaged tracks, or a seal that no longer matches the floor.

Is a threshold seal always the answer?

No. Thresholds can help some floors, but a crooked or unbalanced door should be repaired before adding more seal material.