2026-07-28 7 min read
Your garage door weather stripping and seals do one job: keep the outside out. When they fail, drafts creep in, your HVAC works harder, and utility bills climb fast. We see this constantly in Covina homes that haven't had seals inspected in years. The good news is the fix is straightforward and affordable compared to major repairs.
Southern California heat is relentless. UV exposure, temperature swings between day and night, and occasional moisture all degrade rubber seals over time. Most weather stripping lasts 5 to 7 years before it cracks, shrinks, or loses compression.
The bottom seal takes the heaviest beating. It sits on the ground, flexes every time the door moves, and collects dirt and debris. If yours is cracked, missing chunks, or no longer compresses when the door closes, you're losing heated or cooled air constantly. A threshold gap that's even a quarter-inch wide can draft cold air straight into your garage.
The side and top seals wear more slowly, but they still fail. You'll notice them peeling away from the frame or hardening until they don't seal anymore. When seals deteriorate, insects and water can enter too, which creates bigger headaches down the road.
Walk out to your garage on a sunny day and close the door. Look at the rubber along all four sides. Does it lay flat and flush against the frame, or does it have gaps? Run your hand along the bottom seal. It should compress easily and feel pliable, not brittle or crumbly.
On a cold evening, step inside your garage. Feel for drafts along the door perimeter. Cold air seeping in is a clear sign seals need replacement. In Pasadena and surrounding areas, homeowners often tell us they noticed their garage getting noticeably colder before they called.
Another test: stand inside the garage with the door closed and look for light coming through gaps. Even a thin line of daylight means the seal is compromised and should be replaced soon.
**Need weather stripping & seals in Covina today?** Call 626-709-2397. we cover same-day service across the area.
Pricing depends on which seals you need and the door size. A bottom seal replacement runs between $150 and $350 for most residential doors. Top and side seals typically cost $100 to $250 each. If all four sides need work, expect a total estimate in the $400 to $800 range.
That sounds like real money, but compare it to the cost of heating or cooling your home with gaps around the door. Many homeowners recoup the investment within a year through lower energy bills alone. We give honest, transparent estimates with no hidden fees.
Weatherstripping materials vary in quality. Basic rubber seals are affordable and work fine for most Covina homes. High-performance seals with better compression hold up longer in our heat. We'll walk you through options when you call for an estimate so you know exactly what you're paying for.
Installation takes an hour or two. Some seals are glued on, others are screwed to the frame. We handle it cleanly and test the fit before we leave. Same-day service is available for most seal replacements.
Replacing weather stripping yourself is possible if you're handy. Hardware stores sell kits for $30 to $80. The trick is getting the fit right and making sure the seal compresses evenly all the way around. If the door frame is bent or the seal sits unevenly, you'll still have drafts.
We recommend professional replacement if the frame is damaged, if you want a warranty on the work, or if you value your time. A poor DIY job wastes money and frustration. Our team has installed thousands of seals and knows how to handle frame issues you might not catch.
If you're unsure whether you need new seals or how much work is involved, schedule a free quote. No obligation, no sales pitch. We'll assess your door and give you honest guidance.
Weather stripping works best when the rest of your door is in good shape. If your springs are weak, the door won't close properly and seals won't compress. Read our guide on garage door maintenance in Covina to understand what else needs attention.
Hinges, rollers, and the bottom section can also warp over time, creating gaps no seal can fix. That's why we always inspect the whole door when we're out for seal work. Our maintenance schedule guide walks through everything on an annual basis.
For commercial doors and heavy-use applications, seal replacement happens more often. The demands are different than residential. Check our services page for details on what we offer.
Drafty garage doors are an easy fix that pays for itself. Call Garage Door Covina at 626-709-2397 or get a same-day estimate online. We'll inspect your seals, quote the cost upfront, and schedule installation at your convenience.
Don't let energy slip away through gaps you can control. Small repairs now prevent bigger problems later.
How long do weather stripping seals typically last? Most rubber seals last 5 to 7 years in Southern California's heat and UV exposure. Bottom seals wear faster due to ground contact and repeated flexing. Annual inspection helps catch deterioration early before drafts become a problem.
Can I replace weather stripping myself, or do I need a professional? DIY kits are available at hardware stores for $30 to $80, and basic replacement is possible if you're handy. However, ensuring proper fit and compression is tricky. Professional installation takes an hour, includes a warranty, and guarantees no drafts remain.
What's the difference between bottom seal and threshold? A bottom seal is the rubber strip attached to the bottom of the door itself. A threshold is the fixed piece on the ground where the door closes. Both prevent drafts and water. Some doors have both; others have one or the other depending on design.
How much does a weather stripping replacement cost in Covina? Single seal replacement ranges from $100 to $350 depending on material and size. Full four-side replacement typically costs $400 to $800. We provide free estimates so you know the exact cost before work begins.
Will new seals reduce my energy bills? Yes, noticeably. Drafts around the garage door force your HVAC to work harder. Proper seals can lower energy costs by 10 to 15 percent, especially in homes where the garage is attached to the main structure.