2026-08-28 7 min read
Weather stripping and seals around your garage door aren't glamorous, but they're doing heavy lifting. A worn bottom seal or cracked threshold lets cold air, pests, and moisture pour right into your garage and home. If you're seeing drafts, higher heating bills, or daylight under your door, it's time to replace them. Here's what you need to know.
Fifteen years on the trucks here in Exeter, and I've seen the same pattern repeat. Our winters are brutal. Freeze-thaw cycles crack rubber. Summer humidity warps the bottom seal. Salt air corrodes metal components. Most weather stripping lasts 5 to 7 years before it starts falling apart.
The bottom seal takes the most abuse. It drags across the ground every time the door closes, absorbing moisture and getting compressed. Once it hardens or shrinks, it stops doing its job. That's when you start feeling the draft.
Look for these red flags. If you see daylight under your garage door when it's closed, the bottom seal has failed. Feel around the edges of your door on a cold day. Cold air leaking in means the threshold or side seals are compromised. Insects or rodents finding their way into your garage almost always point to worn seals.
You might also notice your garage feels damp even when the door is shut. That's moisture sneaking past a bad seal. And yes, higher energy bills are a real consequence. Your heating system works overtime to compensate for all that conditioned air escaping.
**Need weather stripping & seals in Exeter today?** Call (978) 574-7767. we cover same-day service across the area.
A basic bottom seal replacement runs $150 to $300 for most residential doors. If you need the full package (bottom seal, threshold, and side gaskets), budget $300 to $500. Labor is usually included in that estimate. We've seen customers spend that and save $200 to $400 per year in heating costs, so the math works fast.
I always tell people: get a free estimate before you commit. Prices vary depending on your door type and how much sealing you actually need. Some doors just need the bottom seal refreshed. Others need the whole perimeter addressed. Schedule a free quote and we'll walk through what your door actually needs.
You can buy weather stripping kits online. They're cheap, sometimes under $50. But here's the catch: installation matters. If the seal isn't aligned perfectly, it won't seal properly. Gaps mean wasted energy. Plus, if your threshold is warped or your door frame has settled, a kit won't fix that. You'll end up frustrated and still have drafts.
Professional replacement handles the root issue. We check the frame alignment, replace or repair the threshold if needed, and install seals that actually work. It's worth the investment, especially if you're planning to stay in your home for several more years.
Related topic: if your door has other issues, like garage door springs or mechanisms that need attention, we can bundle that work during the same visit.
Fall is the ideal time to replace weather stripping. You catch any failures before winter hits. If you wait until January and a seal fails, you're facing emergency pricing and discomfort. Spring is the second-best window. Summer is slower for us, so if you call then, we usually get you in fast.
If you're already dealing with a broken door or other urgent issues, check out our emergency garage door service page to understand response times and costs.
When we arrive, we inspect the entire perimeter of your door. We measure the threshold, check for frame damage, and test the seal fit before installation. Removal of old material takes about 20 minutes. Installation of new seals takes another 30 to 45 minutes. You'll see an immediate difference in how the door closes and feels.
Most jobs are done in under two hours. Same-day service is usually available across Exeter and nearby communities. Get a same-day estimate by calling us now or booking online.
How long do weather seals last? Quality seals last 5 to 7 years in New England's climate. Freeze-thaw cycles, salt exposure, and regular compression accelerate wear. Annual inspections help catch failures early.
Can I replace just the bottom seal? Yes. Most doors have the bottom seal as a separate component. If the threshold and side gaskets are still good, replacing just the bottom seal saves money and works fine.
Will new seals reduce my heating bill? Absolutely. Homeowners typically see 10 to 15 percent savings on winter heating when seals are properly installed. That adds up fast over a season.
Do I need to replace seals if my door is new? Not immediately, but plan for it in 5 to 7 years. Mark it on your maintenance calendar. Preventive replacement beats emergency repairs.
What happens if I ignore drafts? Energy bills climb. Pests and moisture get inside. Your HVAC system works harder and fails sooner. Small problems turn expensive. Better to act now.