The San Diego “rainy season” might be shorter than in other parts of the country, but when those winter storms hit, they hit hard. For many San Diego drivers, the first heavy rain reveals a frustrating problem: a damp seat, a musty smell, or water dripping from the ceiling.

If you’re noticing moisture inside your vehicle, you likely have a leaky sunroof or a failing convertible top seal. At Arroyo Brothers Auto Upholstery, we’ve seen how quickly a small leak can turn into expensive mold damage or electrical issues.

Here is what you need to know to stay dry this season.

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Why is My Sunroof Leaking?

Most people assume the glass seal is broken, but that is rarely the case. Sunroofs are actually designed to let a little water past the outer seal; the “magic” happens in the drainage system.

• Clogged Drain Tubes: Over time, San Diego dust, pine needles, and debris from coastal breezes clog the small tubes that lead water away from your roof. When these clog, water backs up and spills into your headliner.
• Worn Weatherstripping: Constant exposure to the intense SoCal sun can cause rubber seals to crack and shrink, allowing more water in than the drains can handle.

Convertible Tops: The Winter Weak Points

Convertible owners love the San Diego sunshine, but the rain can be a different story. Common culprits for leaks include:

1. Seal Alignment: Over time, the rubber seals where the top meets the windows can shift.
2. Fabric Porosity: If your canvas top hasn’t been treated recently, water may start to “soak through” rather than bead off.
3. Rear Window Separation: In older models, the adhesive holding the glass or plastic rear window to the fabric can fail.

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Don’t Wait for the Next Storm

A leak doesn’t just ruin your upholstery; it can damage your car’s electronics and create a breeding ground for mold that is difficult and costly to remove. If you see a water stain on your headliner or feel damp carpets, it’s time for a professional inspection.

Expert Repairs in National City

At Arroyo Brothers Auto Upholstery, we specialize in identifying the exact source of your leak. Whether it’s clearing out stubborn sunroof drains or replacing a worn-out convertible top, we’ve served the San Diego community for years with expert craftsmanship.

Get your car rain-ready today!

• Call Us: (619) 474-4684
• Email Us: sales@arroyoautoupholstery.com
• Visit Our Shop: 128 National City Blvd., National City, CA 91950

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