2026-04-06 6 min read
A lot of homeowners spend good money insulating their walls and attic while completely overlooking one of the biggest gaps in the whole house: the garage door. In Kenly, where rainfall is a year-round reality and summer humidity hangs heavy from May through September, a failed weather seal isn't a minor inconvenience. It's an open invitation for water intrusion, insects, rodents, and energy loss.
The housing stock in this area leans heavily toward single-family homes, many of them built in the 1980s and early 1990s. If you're in one of those homes and the weather seals haven't been touched since installation, there's a real chance they've been quietly failing for years. Here's how to know for sure. and what to do about it.
Garage doors have seals in several places: a bottom seal that presses against the floor when the door closes, side seals (sometimes called stop seals or bead seals) that run along the vertical edges of the door frame, and a top seal across the header. Together, these form a barrier against wind, water, pests, and outside air.
When they're working, that barrier is surprisingly effective. A properly sealed garage door helps keep rain and debris out, reduces pest entry points, and. especially important for attached garages. helps prevent conditioned air from escaping your home. When the seals break down, all of that goes away at once.
Weather stripping improves energy efficiency by sealing gaps that allow hot or cold air to escape. For an attached garage, that matters even more because the temperature in your garage directly affects the rooms adjacent to it. If you're curious about the broader energy picture, our energy savings calculator can help you understand how much a properly sealed and insulated door is actually worth.
This is the simplest test you can do. On a bright day, close your garage door, turn off the interior lights, and look around the edges of the door. If you can see light coming in from outside, air and water can get in too. Any visible gap means the seal has either compressed, cracked, or pulled away from its channel.
Kenly sits in a region that gets meaningful rainfall throughout the year. If you're finding wet spots on the garage floor near the door after a rainstorm. or noticing moisture or dampness along the bottom edge. that's a clear sign the bottom seal is no longer doing its job. Water that puddles inside a garage doesn't just make a mess; it accelerates rust on any metal stored there and can eventually cause floor damage.
A garage with failing seals is an easy entry point for pests. If you've noticed more insects in your garage, or worse, signs of mice or other small rodents, the weatherstripping is often the culprit. Even a gap smaller than you'd think is wide enough for insects and small rodents to squeeze through. Homeowners in Wilson and other nearby communities often report the same pattern. the pest problem shows up first, and the failed seal gets diagnosed later.
Close-up visual inspection tells you a lot. Healthy weatherstripping is flexible and compressible. If your bottom seal or side seals look flattened, cracked, peeling, or stiff, they've lost their ability to form a real barrier. UV exposure from years of sunlight, combined with Kenly's summer heat, breaks down rubber and vinyl seals over time. Cracking, brittleness, or visible tears in your current seal all indicate replacement is needed.
A poorly sealed garage door allows conditioned air to escape, forcing your HVAC system to work harder and driving up your utility costs. For homes where the garage shares a wall with a living area. or where there's a finished room above the garage. a failing seal can make a noticeable difference in both comfort and monthly costs.
Not all weather seals are built the same, and the right choice depends on your door type and situation.
Vinyl weatherstripping is durable and water-resistant. a solid all-around choice that works well for side and top seals in climates with temperature swings like ours.
Rubber seals are more flexible and tend to hold up better on uneven floors, which is useful if your garage floor has settled or shifted over the years. something that happens more often in older homes.
For the bottom seal specifically, there are several profile shapes. T-shape, bulb, and P-shape are the most common. each designed to contact the floor differently. A bulb-shaped seal is particularly forgiving on uneven surfaces, while a P-shape offers a tighter, more airtight closure on flat, level floors. The right choice depends on your specific door and floor condition, which is why a quick in-person assessment beats guesswork every time.
It's worth noting that weatherstripping typically lasts somewhere between 5 and 10 years, depending on the climate and how often the door is used. In a humid environment with hot summers, leaning toward the lower end of that range is realistic. If you're not sure when yours was last replaced, err on the side of having it checked.
Bottom seal replacement is one of the simpler garage door service jobs. The old seal slides or pulls out of its retainer channel along the bottom of the door, and the new one slides or is pressed into place. It doesn't require removing the door or any major disassembly. For side and top seals, the process is similarly straightforward. old material comes off, mounting surfaces get cleaned, and new material is secured and fitted to the door.
What makes a difference is proper measurement and fit. An undersized or incorrectly profiled seal will leave gaps even after installation. That's where having a technician do the job properly pays off. the seal gets measured to your actual door dimensions and installed with the right compression against the floor and frame.
If a technician is already out for a seal replacement, it's a good time to have them check your panels for any damage that might be letting in air or moisture around the edges. Our guide on panel repair is worth a read if you've noticed any dents or cracks in the door itself.
For a full list of what Kenly Garage Doors can help with. from seal replacement to full door service. visit our services page. And if you're ready to get a seal inspection scheduled, reach out to our team and we'll get you sorted out quickly.
Q: Can I replace the bottom weather seal myself, or do I need a professional?
Replacing a bottom seal is one of the more DIY-friendly garage door jobs, and some handy homeowners do handle it themselves. That said, getting the right seal profile for your specific door and retainer type matters. an incorrect fit leaves gaps. A professional can identify the right material, measure properly, and ensure the door compresses evenly against the new seal.
Q: How often should weather seals be replaced in a climate like Kenly's?
A general rule of thumb is every 5 to 10 years, but heat, humidity, and UV exposure all accelerate wear on rubber and vinyl materials. In Kenly's climate, inspecting seals every 3 to 4 years is reasonable. If you see cracking, flattening, or light coming through the edges, don't wait for the scheduled interval. replace them.
Q: Will replacing my weather seal actually lower my energy bills?
For attached garages or homes with finished space adjacent to the garage, yes. it can make a meaningful difference. Sealing gaps prevents conditioned air from escaping and outside heat from flooding in during summer. Combine a good weather seal with an insulated door for the best results. Our energy savings calculator can help you estimate the potential impact for your specific situation.