2026-09-13 7 min read
If your garage has been letting in cold air, dust, or water during rain, worn weather stripping and seals are almost always the culprit. The good news: replacing a bottom seal or threshold is one of the most affordable garage door fixes, and we handle same-day service across West Covina. Most homeowners spend between $150 and $400 total, depending on which seals need work and your door's condition.
Weather stripping is the rubber or vinyl material that runs along the sides and top of your garage door. The bottom seal (also called a threshold or base seal) is the heavier rubber strip that blocks drafts and water from entering underneath your door. Over time, sun exposure, temperature swings, and regular opening and closing wear these materials down. See our guide on garage door springs in west covina: cost, types, and when to replace.
West Covina's climate means your seals face real stress. Summer heat and occasional winter dampness accelerate breakdown. A cracked or missing bottom seal can let in pests, drafts, and moisture that damage your garage floor and stored items.
Weather stripping typically lasts 5 to 7 years before needing replacement. Your threshold seal may last longer, but cracks and splits often appear sooner if your door operates heavily or if you park in direct sun. Read about commercial roll-up garage doors in west covina: heavy-duty systems that work.
Most failures happen because the rubber hardens and loses flexibility. Once it cracks, water gets in. Insects follow. Then comes the draft in winter, which costs you real money on heating bills. We've seen homeowners lose $10 to $20 per month in heating efficiency from a single worn bottom seal.
If you've already noticed other issues, check our guide on garage door maintenance in West Covina to prevent costly repairs) before seals fail completely.
Here's what Garage Door West Covina actually charges for weather stripping and seal work:
Bottom Seal Replacement: $150 to $250. This is the most common job. We remove the old rubber, clean the threshold, and install a new seal. Takes 30 minutes to an hour.
Side Weather Stripping: $100 to $200 per side. If both sides need work, budget $200 to $400 total.
Full Seal Package (bottom plus both sides): $350 to $500. Most cost-effective if multiple seals are failing.
Emergency or same-day service: Add $50 to $100 if you need us outside normal hours. That's honest pricing with no hidden fees.
Parts are cheap. Labor is where cost lives. We don't pad estimates. If your door only needs a bottom seal, we quote only the bottom seal. We've turned down upsells before because a customer didn't actually need them.
**Need weather stripping & seals in West Covina today?** Call 424-677-0420. we cover same-day service across the area.
Look for these signs:
Visible cracks, splits, or chunks missing from rubber. Daylight showing under the door when it's closed. Water pooling inside your garage during rain. Cold drafts in winter even with the door shut. Insects or rodents finding their way in.
If you see any of these, your threshold or side seals need attention soon. Water damage inside a garage gets expensive fast.
You can buy weather stripping kits online for $30 to $80. Installation is straightforward if your door is modern and the track is clean. But most DIY seals don't last as long as professional-grade materials. They also don't compress as well, leaving small gaps.
We use commercial-grade rubber that lasts longer and seals tighter. For $150 to $250, the difference is worth it. You get a warranty, proper installation, and peace of mind.
If your door has alignment issues or a bent threshold, DIY won't fix the root problem. We diagnose that first.
A bottom seal is one of the cheapest preventative fixes you can make. Compare it to spring replacement (which runs $300 to $600) or a full door replacement (thousands). Spending $200 now on seals saves you money on heating bills and prevents water damage that could cost $1,000 or more later.
We also cover garage door insulation and R-value ratings in West Covina) if you want to upgrade your whole door's efficiency beyond just seals.
If you're seeing signs of seal failure, call us for a free estimate. We'll assess your bottom seal, threshold, and side stripping in one visit and give you an honest cost before any work starts. Many customers schedule service and we're done the same day.
Ready to seal out drafts and save on energy? Schedule a free quote today) or call 424-677-0420. We serve West Covina and the surrounding San Gabriel Valley area with transparent pricing and fast turnaround.
How long does weather stripping last? Most rubber weather stripping lasts 5 to 7 years in West Covina's climate. Side stripping may last slightly longer than the bottom seal because it faces less water exposure and foot traffic.
Can I replace just the bottom seal? Yes. You don't need to replace all seals at once. If only the threshold is worn, we replace only that. Many customers do side seals later after they see how much the bottom seal improves drafts.
Do weather stripping repairs come with a warranty? We warranty our seals for one year against manufacturing defects. Normal wear is not covered, but material failure is.
What's the difference between weather stripping and a bottom seal? Weather stripping runs along the sides and top of the door. The bottom seal (threshold) is heavier rubber that blocks water and large gaps underneath. Both serve the same purpose: blocking air and moisture.
Is it worth replacing seals on an old garage door? If your door still operates smoothly and the panels are intact, yes. Seals are cheap relative to door replacement. If the door also needs springs, panels, or opener work, we can discuss full replacement value with you.