2026-03-25 6 min read
Bunn sits in a part of North Carolina where the weather rarely sits still for long. Summers are warm and humid, winters bring their share of freezing rain and cold snaps, and spring storms roll through Franklin County with reliable frequency. For homeowners here. whether you're in an older ranch-style home near downtown or a newer craftsman build out toward Lake Royale. that kind of year-round weather variability takes a quiet toll on one of the most overlooked parts of your garage: the weatherstripping.
Most people don't think about their garage door seals until they notice a puddle on the floor after a hard rain, or feel a draft hitting their ankles when they walk through the garage in January. By that point, the seal has usually been failing for a while. The good news is that weatherstripping is one of the easier and more affordable maintenance items to stay on top of. if you know what to look for.
Garage door weatherstripping refers to the flexible seals installed along the bottom, sides, and top of your garage door. Each location does a slightly different job:
- The bottom seal closes the gap between the door and the concrete floor. the most critical point, since that's where most water, pests, and drafts enter. - The side and top seals (also called stop molding or trim seals) press against the door frame when the door is closed. - A threshold seal can be added to the floor itself for an extra layer of protection in garages prone to water intrusion.
Together, these seals keep rain and groundwater out during storms, block drafts that make the garage and any adjacent living spaces colder in winter, prevent insects and small rodents from finding a way in, and help maintain a more stable temperature inside the garage year-round. which matters for anything you're storing in there.
Franklin County is one of the fastest-growing counties in North Carolina, with a 4% population increase between 2023 and 2024 alone. A lot of that growth means newer homes going up across the area. and new homes eventually have new weatherstripping that ages just like everything else. Meanwhile, plenty of established homes in and around Bunn and nearby Youngsville have seals that have been through years of humidity cycles without a second look.
The combination of heat and moisture here in central Franklin County is rough on rubber and vinyl seals. High humidity promotes swelling during warm months and brittleness during cold snaps. Freeze-thaw cycles. and Bunn gets them every winter. cause weatherstripping to stiffen and pull away from the door frame. UV exposure during our warm summers degrades rubber faster than most homeowners realize.
Wooden garage doors, which are still common on older properties, face an additional challenge: the door itself may expand and contract seasonally, creating gaps where the seals no longer make full contact. If your home has a wood door and you've noticed the weatherstripping seems fine but air still gets through, the problem may be the door shifting rather than the seal itself. Our material selection guide covers the pros and cons of wood versus steel and other options if you're thinking longer-term.
You don't need to be a technician to spot most of these. Walk around your closed garage door and check for:
Visible cracks or tears. Rubber and vinyl seals that show splits, chunks missing, or significant cracking are no longer creating a proper seal. even if they look mostly intact from a distance.
Hardening or flattening. Press on the bottom seal. A healthy seal should compress and spring back. If it feels stiff, brittle, or permanently flattened, it's lost its elasticity and isn't making full contact with the floor.
Light coming through. Stand inside the closed garage on a bright day and look at the bottom edge and sides. If you can see daylight, water and pests can get through too.
Water or debris inside after rain. If you find puddles, leaf debris, or mud tracking inside after a storm, the bottom seal or threshold isn't doing its job.
Increased energy bills or drafts. Garages that share a wall with living spaces. common in newer Franklin County builds. can pull cold air from a poorly sealed garage directly into your home. If a room adjacent to the garage feels drafty in winter, check the garage door seal before assuming it's a window problem.
Pest activity. Mice and insects are opportunistic. A bottom seal with even a small gap is an open invitation, especially during cooler months when they're looking for warmth. If you're seeing evidence of rodents or insects in your garage, the door seals are one of the first things to check.
Not all weatherstripping is created equal, and the right choice depends partly on your climate and door type. For Franklin County conditions, here's a practical breakdown:
- Rubber bulb seals attach via aluminum retainer strips and provide excellent compression resistance. They hold up well under rain and temperature swings. a solid choice for most Bunn-area homes. - Vinyl U-channel seals are affordable and install easily, but they tend to degrade faster in temperature extremes, making them better suited to mild conditions. - Brush seals use flexible bristles to block dust and small debris without interfering with door movement. often used on the sides and top of the door.
In terms of lifespan: vinyl U-channels typically last 2,3 years, rubber bulb seals 5,7 years, and brush seals can reach 7,10 years with proper care. Check your seals at least once or twice a year. spring is a natural time to do it after the winter freeze-thaw cycle, and fall before cold weather sets in.
Proper weatherstripping also ties directly into your energy efficiency. If you're curious about how a better-sealed garage door affects your utility bills, our energy savings calculator guide walks through the numbers in a way that's easy to apply to your home.
Bottom seal replacement is one of the more approachable DIY garage door tasks. You measure the door width, purchase the correct seal type for your door's retainer track, slide the old seal out and the new one in. Basic rubber seals are available at most hardware stores and the job can typically be done in under an hour.
Where it gets more complicated: if the retainer track itself is damaged or corroded, if the door frame is uneven, or if the side and top seals are also involved, a professional installation ensures everything lines up correctly and lasts as long as it should. An improper fit on a bottom seal can actually cause it to wear out faster by creating friction points or causing the door to bind.
Bunn Garage Doors handles weatherstripping replacement as part of routine maintenance visits across the Bunn and Youngsville area. If you're not sure whether your seals need a full replacement or just some minor attention, browse our service options or get in touch directly. sometimes a quick look is all it takes to know where you stand.
Q: How often should I replace garage door weatherstripping in the Bunn area? A: Inspect seals at least twice a year. once in spring after winter stress, and once in the fall before cold weather. Rubber bulb seals typically last 5,7 years; vinyl seals may need replacement every 2,3 years. The local humidity and temperature swings here in Franklin County tend to shorten the upper end of those ranges, so don't wait for obvious failure.
Q: Water is getting under my garage door but the bottom seal looks okay. What else could it be? A: A few possibilities. the seal may look intact but have lost its elasticity and no longer compresses fully against the floor. The concrete floor itself may have settled unevenly, creating gaps the seal can't bridge. A threshold seal installed on the floor can help in those cases. It's also worth checking whether water is entering from the sides rather than the bottom.
Q: Can poor weatherstripping actually affect my home's heating and cooling costs? A: Yes, particularly if your garage shares a wall with living space. which is common in the ranch-style and craftsman builds popular throughout Franklin County. A poorly sealed garage door lets unconditioned air into the garage, which then transfers through that shared wall. Fixing the seals is often one of the fastest, lowest-cost ways to improve thermal performance in those rooms.