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Garage Door Weather Seal Failure
in Frisco, TX
Garage door weather seals are the rubber and vinyl strips along the bottom, sides, and top of the door that block air, water, and pests. In Frisco, the combination of intense UV exposure from the Texas sun and summer heat above 100 degrees cracks and hardens these seals within a few years. Once the seal fails, rainwater gets under the door during the heavy spring and fall storms that regularly drop 3 to 5 inches of rain in a single event.
Quick Answer
Weather seals on a garage door wear out from sun, heat, and repeated compression. In Frisco, the UV exposure and summer temperatures above 100 degrees crack rubber seals faster than in northern states. A technician replaces the bottom seal and the side and top stop molding. This keeps rain, hot air, and insects out. It is an inexpensive fix worth doing before the next storm season.
Telltale Signs
Warning Signs to Watch For
- Light is visible around the edges or bottom of the door when it is closed
- Water puddles inside the garage near the door after rain
- The bottom seal is cracked, stiff, or has chunks missing
- Hot air rushes in when you open the door even slightly in summer
- Insects, including scorpions or wasps, found inside the garage regularly
Root Causes
What Causes Garage Door Weather Seal Failure?
UV and heat degradation of rubber seal
Frisco gets over 230 sunny days a year, and the bottom seal on a south- or west-facing garage door takes direct UV exposure every afternoon. UV light breaks down rubber and vinyl, making it brittle and hard within 3 to 5 years on a door with no shade protection.
The Fix
Bottom Seal Replacement
The technician pulls the old seal out of the bottom retainer and slides in a new vinyl or rubber seal sized for the door width. Some retainer channels also crack and need replacement at the same time.
Stop molding shrinkage on sides and top
The stop molding is the flat seal that runs up both sides and across the top of the door frame. It is usually made of vinyl or foam-backed rubber. Frisco's heat causes this material to shrink slightly over time, pulling it away from the door and leaving gaps that water and air push through.
The Fix
Stop Molding Replacement
Old stop molding is peeled off and new molding is nailed or stapled in place, pressed firmly against the closed door to create a proper seal. A good seal compresses slightly when the door closes without fighting the door's travel.
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 of rubber seal | Stop molding shrinkage on sides and top |
|---|---|---|
| Bottom seal is visibly cracked, torn, or missing sections | ||
| Gap visible along the side or top of the door frame | ||
| Water comes in specifically along the bottom edge after rain | ||
| Air gap felt along the door frame sides on a windy day | ||
| Seal damage worse on the side of the door that faces afternoon sun |
Free Inspection
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An on-site inspection is the only way to confirm which cause applies to your property. Free, no obligation.
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