2026-08-06 7 min read
A customer called last Tuesday about cold air pouring into her garage during Sunapee's early fall. She'd assumed a new door was coming. Turns out, her bottom seal had simply worn thin. A $180 replacement stopped the draft completely. That's the honest answer: weather stripping and seals often fail long before the door itself does, and fixing them saves you money and comfort without breaking the bank.
New England winters are unforgiving. Temperature swings, salt spray, UV exposure, and constant opening and closing all wear down rubber and foam seals. Most weather stripping lasts 5 to 7 years under normal use. In Sunapee, where we see snow, ice, and humidity cycling through the seasons, that timeline can shrink to 4 to 6 years.
The threshold seal at the bottom of your door bears the worst of it. It absorbs moisture, gets compressed by the door's weight, and cracks from freeze-thaw cycles. Side seals deteriorate more slowly, but they do deteriorate. Head seals (at the top) tend to last longer because they're not in the weather's direct path.
When seals fail, you notice drafts first. Then comes the higher heating bill. Your HVAC system works harder to maintain temperature when cold air leaks in around the garage. If your garage is attached to your home, you're losing conditioned air from your living space too.
Here's where I'm straight with you: a quality bottom seal replacement runs $150 to $220, depending on your door's size and the seal material. Side seals add another $80 to $150 each. A full seal kit (bottom plus sides) typically costs $280 to $450 installed.
That sounds high until you compare it to what you'll spend on wasted heating over a winter. A single drafty garage door can add $40 to $60 per month to your heating costs in January and February. Over three years of a failing seal, you're looking at $1,440 to $2,160 in wasted energy. The math favors fixing it now.
The cost also depends on your door's age and condition. Older doors sometimes need custom seals or special adhesives. Modern doors with snap-in seals cost less to service. We'll provide an honest estimate before we touch anything. Get a same-day estimate by calling 19789615660.
Don't wait for a full draft to act. Look for these warning signs:
Visible cracks or gaps in the rubber or foam. If you can see daylight around the edges, the seal is done.
Water pooling inside the garage after rain or snow melt. A failed bottom seal lets moisture in fast.
A noticeable temperature difference between your garage and the rest of your home in winter.
Reduced noise insulation. If outside sounds are louder, the seal is compromised.
Peeling or hardened rubber. Seals that have lost flexibility won't compress properly against the door frame.
**Need weather stripping & seals in Sunapee today?** Call 19789615660. we cover same-day service across the area.
Some homeowners try replacing seals themselves. It's tempting because the materials are affordable. But here's the catch: improper installation leaves gaps that defeat the purpose. The seal won't compress evenly, and drafts return within months.
Professional installation ensures the seal sits flush against the frame and compresses uniformly across the entire perimeter. We've seen too many DIY jobs that looked fine for two weeks, then failed spectacularly when the first cold snap hit.
If you're handy and your door is a common modern model, you might manage side seals. The bottom seal is trickier. When in doubt, call a professional. The $100 to $150 labor cost is cheap insurance against a repeat failure.
Weather stripping is part of a larger maintenance picture. A worn seal can indicate other problems. Sometimes the door's alignment is off, forcing the seal to work harder. Other times, the frame itself has shifted slightly. These issues won't resolve by replacing the seal alone.
That's why we always inspect the whole door during a seal replacement. If we spot alignment issues or frame damage, we'll tell you straight up. You can prioritize fixes based on actual need, not guesswork. Our preventive maintenance guide covers the full picture of keeping your door functional year-round.
Sunapee's climate is brutal on garage doors. We've replaced hundreds of seals over the years and know exactly which materials hold up best in our freeze-thaw cycles. We use seals rated for New England winters, not generic nationwide stock.
We also understand that your garage door is connected to your home's overall insulation and energy efficiency strategy. If you're thinking about upgrading to an insulated door, we can discuss how that affects sealing and long-term costs. Explore our full service options to see what fits your situation.
Your garage door's seals are one of the cheapest things to fix before they become expensive. A $300 seal replacement now beats a $3,000 door replacement in three years. Call us with photos or a description of what you're seeing. We'll give you an honest assessment and a fair price.
Sunapee Garage Doors has been in the business of keeping doors working and homes comfortable. We don't upsell, and we don't rush you. Schedule a free quote today, or call 19789615660 for same-day service.
Don't let another winter's heating bill tell you something's wrong. Address it now while the fix is simple and affordable.
How long do garage door seals last? Most weather stripping lasts 5 to 7 years. In Sunapee's harsh winters, expect 4 to 6 years. UV exposure, temperature swings, and salt spray all shorten lifespan. Replace seals as soon as you notice cracks or daylight gaps.
What's the difference between a bottom seal and a threshold? The bottom seal is the rubber strip attached to the bottom of your door. The threshold is the frame piece or lip at the base of the opening. Both work together. A failed bottom seal leaves gaps; a damaged threshold can cause misalignment.
Can I replace just the bottom seal? Yes, absolutely. Side and head seals often outlast the bottom seal. Replace only what's worn. However, if multiple seals show age, replacing them all at once is more cost-effective than staggering repairs.
Will new weather stripping reduce heating costs? Yes, noticeably. A failed seal can cost $40 to $60 per month in wasted heat during winter. Replacing seals typically recovers its cost within three to four months of heating season.
How quickly can you install new seals? Same-day service is available for most doors in Sunapee. Call 19789615660 to schedule. Typical installation takes one to two hours depending on seal complexity and door condition.