2026-06-30 7 min read A2Z Garage Doors
A customer called last Tuesday complaining her garage felt like a wind tunnel in winter. After 8 years without attention, her bottom seal had shrunk and cracked, letting cold air pour in around the edges. The fix was straightforward: new weather stripping and a reinforced threshold seal. Total cost, under $300. She'd been losing hundreds in wasted heating energy every season. This is the story I see over and over in Larkspur homes.
Weather stripping and seals matter far more than most homeowners realize. They're the quiet barrier between your conditioned garage space and the outside elements. When they fail, drafts slip in, your heating and cooling work overtime, and your utility bills climb. The good news? Replacing worn seals is one of the most affordable garage door repairs you can do.
Larkspur sits at elevation where temperature swings are brutal. Winter nights drop well below freezing. Summer afternoons can hit 80 or 90 degrees. That constant expansion and contraction breaks down rubber and foam seals faster than in milder climates.
The bottom seal takes the worst beating. It flexes every time your door opens and closes. Over 5 to 7 years, UV exposure, moisture, and repeated stress cause it to crack, shrink, or separate from the door frame. Once that happens, a visible draft appears. You'll notice it on windy days or when you step into the garage on a cold morning.
Threshold seals, which sit at the base of your door opening where it meets the concrete floor, suffer similar wear. They compress under the door's weight and can become uneven if the concrete shifts even slightly. Many homes in the Larkspur area built on older foundations experience minor settling that throws thresholds out of alignment.
Ignoring a gap in your weather stripping is like leaving a window cracked open all winter. Your heating system runs longer to compensate. Your air conditioning has to work harder in summer. Over a heating season, that wasted energy can add up to $200 to $400 in extra utility costs.
Beyond energy loss, drafts let in dust, pollen, and insects. If your garage is attached to your home (as most are in Larkspur neighborhoods), air leaks also affect indoor comfort. You might notice your living spaces feel drafty or harder to heat evenly.
When you're thinking about your garage door's overall maintenance routine, weather seals should rank high. Check out our guide on garage door maintenance in Larkspur to understand what you really need to do and when to keep everything running efficiently.
**Need weather stripping & seals in Larkspur today?** Call 720-459-9673. We cover same-day service across the area.
Look for these warning signs around your garage door:
Light visible around the door edges when it's closed is the clearest indicator. You should not see daylight between the door and frame. Check the bottom seal especially. Press on it with your finger. If it doesn't spring back, it's lost its elasticity and needs replacing.
Feel for drafts. On a windy day, stand inside your garage with the door closed and move your hand around the perimeter. Cold air flowing in means gaps exist.
Inspect the threshold for cracks or uneven spots. Water pooling near the door is another red flag. A failed threshold or bottom seal lets moisture in, risking concrete damage and mold growth.
If you notice multiple issues beyond seals, your door may need a full tune-up. Our garage door tune-up cost guide for Larkspur breaks down what other repairs might be lurking.
I'm going to be straight with you: weather stripping and seal replacement in Larkspur runs between $250 and $500 for most residential doors. This includes labor and materials. A basic bottom seal replacement might cost $200 to $300. Adding a threshold seal and full perimeter stripping bumps the total higher.
The estimate depends on your door size, seal type, and whether we find additional damage once we inspect. We never surprise you with hidden charges. I price jobs honestly because I want repeat customers and referrals, not quick profits.
For a free, no-obligation estimate, get a same-day estimate from Garage Door Company Larkspur. We'll inspect your door at no charge and give you a firm quote before we touch anything.
You can buy weather stripping kits online for $30 to $80 and install them yourself. If you're handy and the seals haven't been replaced in 10+ years, it's worth trying. However, if the door frame is warped, the threshold is cracked, or the bottom seal needs precise alignment, professional installation ensures it works right the first time.
Improper installation leaves gaps that defeat the purpose. We've seen plenty of DIY jobs that looked good but still leaked air. For $200 to $300 in labor, having us handle it means the job is done correctly and backed by our warranty.
New weather stripping pays for itself within one heating season in most Larkspur homes. If you're spending an extra $300 per year on energy waste, a $300 seal replacement means you break even immediately. After that, you're saving money every month.
Combine seal replacement with proper garage door insulation (if your door isn't already insulated) and you'll see even bigger savings. We wrote a detailed post on garage door insulation in Larkspur that covers R-value, cost, and energy savings if you want to explore that option too.
Drafts and energy loss don't fix themselves. The longer you wait, the more you're hemorrhaging money on wasted heating and cooling. Our team at Garage Door Company Larkspur has fixed thousands of seal problems across the region. We know Colorado mountain weather and what it takes to keep garage doors tight and efficient.
Call us at 720-459-9673 for a free estimate. We'll tell you exactly what you need and what it costs. No pressure, no surprises.
How long do garage door weather seals last? Most quality seals last 5 to 8 years in Colorado's climate. Elevation, UV exposure, and temperature swings accelerate wear. Inspect yours annually and replace when you see cracks, shrinkage, or visible daylight gaps.
Can I replace weather stripping myself? Yes, if you're comfortable with basic tools and the door frame is straight. Removal and installation take 1 to 2 hours. However, poor installation leaves gaps. Professional replacement ensures proper alignment and seals out all drafts effectively.
What's the difference between weather stripping and a threshold seal? Weather stripping runs along the sides and top of the door frame and seals the perimeter. A threshold seal sits at the bottom where the door meets the floor. Both are essential for a tight, draft-free garage.
How much will I save on energy bills? Most homeowners save $200 to $400 per heating season after sealing air leaks. Savings vary based on your home's insulation, local utility rates, and how much the door was leaking. Your ROI typically happens within the first year.
Do I need new seals if my door is newer? Newer doors have better seals than older models, but Colorado's sun and temperature extremes still wear them down. Check yours at 5 years. If you see cracks or feel drafts, replacement is due regardless of age.