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Garage Door Weather Seal Failure
in Arlington, TX
The weather seal at the bottom of your garage door takes the most abuse. It sits on concrete, gets run over by tires, and bakes in the Arlington sun through summers that stay above 95 degrees for weeks at a time. Once it cracks and hardens, water gets in during rain, insects find their way through, and whatever climate control you have in the garage works against a constant leak of outside air.
Quick Answer
Weather seals are the rubber or vinyl strips that line the bottom and sides of your garage door. Arlington's heat dries them out and makes them brittle, usually within five to seven years. When they crack or pull away, rain gets in, your AC works harder, and mice find a gap they can squeeze through. Call (817) 670-4611 if you see daylight around your closed door.
Telltale Signs
Warning Signs to Watch For
- You can see daylight under or around the closed door
- Water pools on the garage floor after a rain
- The bottom seal is visibly cracked, flat, or missing sections
- Dirt and debris blow in under the door on windy days
- You find insects or small pests near the gap at the bottom
- Your garage is noticeably hotter in summer than it used to be
Root Causes
What Causes Garage Door Weather Seal Failure?
UV and Heat Degradation
Arlington averages over 230 sunny days a year, and a south or west-facing garage door gets direct sun on the bottom seal for hours each day. That UV exposure breaks down rubber and vinyl until the seal loses its flexibility. By the time it cracks, it no longer makes contact with the floor and the gap is open.
The Fix
Bottom Seal Replacement
The old seal slides or nails out of the retainer channel along the bottom edge of the door. A new seal in the right width gets installed in its place. EPDM rubber holds up better than standard vinyl in sustained heat.
Uneven Concrete Floor
The heavy clay soil under most Arlington homes shifts with moisture. After a wet spring followed by a dry summer, the garage slab can settle unevenly, sometimes dropping or rising an inch or more in spots. A seal that used to sit flat on the floor now bridges over the low spot and leaves a gap no matter how new the rubber is.
The Fix
Seal Replacement with Floor Gap Assessment
A wider or T-style bottom seal can bridge minor floor variations. If the floor has dropped significantly, the technician documents the gap so you can have a concrete contractor evaluate the slab separately.
Self-Diagnosis
Which Cause Applies to You?
Check the signs you're observing to narrow down the likely root cause before your inspection.
| What You're Seeing | UV and Heat Degradation | Uneven Concrete Floor |
|---|---|---|
| Seal is hard, brittle, and cracked along its length | ||
| Gap only appears in one spot, not the whole bottom edge | ||
| Water comes in at the same low spot on the floor every time | ||
| Seal falls apart when you touch it | ||
| Daylight shows evenly under the entire door bottom |
Free Inspection
Get a Diagnosis in Arlington
An on-site inspection is the only way to confirm which cause applies to your property. Free, no obligation.
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