2026-03-27 6 min read
Most homeowners in Adkins don't think about their garage door weather seal until they notice puddles on the garage floor after a storm, or find themselves sweeping out the same layer of gritty dust week after week. By that point, the seal has usually been failing for a while. and so has the protection it was supposed to provide.
Out here in eastern Bexar County, the climate puts weather seals through a lot. Summer UV exposure bakes the rubber brittle. Temperatures regularly swing dramatically between afternoon highs and overnight lows. And when storms roll through. the kind that can move fast through the San Antonio metro area and reach Adkins in a hurry. you want a seal that actually keeps the water out.
Your garage door has four sealing points: a bottom seal (also called an astragal) that presses against the floor when the door closes, plus side seals and a top seal that run along the door frame. Together, these block out water, wind-driven dust, heat, and pests.
The bottom seal takes the most abuse. It flexes every time the door moves, compresses against the floor when closed, and sits directly in the path of anything blowing under the door. Moisture causes corrosion and rust on metal components. and a failing bottom seal is often the first thing that lets that moisture in. In the Adkins area, where many homes sit on acreage with exposed driveways, dust and debris from the yard are a constant issue too.
Side and top seals are easy to overlook, but if you can see daylight around the edges of your closed door, those seals have either shrunk, cracked, or pulled away from the frame. That gap is costing you in air conditioning bills all summer long.
Here's a quick inspection you can do yourself:
- Run your hand along the edges on a breezy day. Feel air moving? The seal isn't doing its job. - Look for daylight at the bottom or sides when the door is fully closed. - Check the rubber itself. If it's stiff, cracked, torn, or has patches missing, it won't compress properly. and it won't seal. - Check for puddles or moisture on the garage floor near the door after rain. - Look for insect or rodent activity. Gaps in the bottom seal are a common entry point for fire ants, rodents, and other pests that are a real concern in the Adkins and Marion areas.
The vinyl or rubber bottom seal is usually the first component to fail. it shrinks at the corners, hardens over time, and eventually just stops doing its job even when it looks intact. The steel components of your door might last decades, but the seal needs attention much sooner.
If your driveway slopes slightly toward the garage. which is common on rural properties and acreage lots around Adkins. a standard bottom seal alone may not be enough during heavy rain. A threshold seal mounts directly to the concrete floor and creates a raised barrier the bottom seal presses against. This is especially useful if you've had water intrusion before and the regular seal replacement didn't fully solve it.
Learn more about the full range of sealing and weatherproofing options we offer for homes in this area.
In our part of Texas, plan on inspecting the bottom seal at least once a year. ideally in the spring after winter temperature swings and before the summer heat sets in. The South Texas sun is hard on rubber and vinyl; UV exposure can degrade the material faster than the mechanical wear alone. A seal that looks fine in the shade may be cracked and brittle when you flex it.
As a general rule, if your seal is more than two or three years old and showing any cracking or stiffness, it's worth replacing. It's one of the more affordable maintenance items on a garage door, and the protection it provides is disproportionate to the cost.
Universal City and Converse homeowners we service often discover during routine tune-ups that their seals have been quietly failing for a full season. letting in hot air, moisture, and pests. without any obvious dramatic sign.
Bottom seal replacement is a straightforward job. The old seal slides out of a metal retainer track at the base of the door, and the new one slides in. If the retainer track itself is bent or corroded, that needs to be addressed too. a damaged track means the new seal won't sit correctly and will fail faster.
Side and top weatherstripping is similarly simple to replace. The material is cut to length and either stapled, nailed, or adhered to the door stop molding around the frame.
If you want to do it yourself, it's doable on most standard doors. just measure carefully and make sure you get the right seal profile for your retainer. If you'd rather have it done right the first time, Garage Door Adkins can handle it as a standalone service or as part of a full maintenance tune-up.
Q: Can a failing weather seal really affect my energy bills? A: Yes, especially in an attached garage. Hot air leaking in during our Adkins summers puts more load on your home's air conditioning, since the shared wall between the garage and living space transfers that heat. Proper sealing reduces that load. and keeps the garage itself more comfortable if you use it as a workspace.
Q: What's the difference between a bottom seal and a threshold seal? A: The bottom seal is attached to the door itself and moves with it. The threshold seal is fixed to the garage floor and acts as a raised barrier. Using both together gives the best protection against water intrusion, especially on driveways that slope toward the garage.
Q: Are there pest-related reasons to keep my weather seal in good shape? A: Absolutely. Gaps as small as a quarter inch are enough for mice, fire ants, and other common Texas pests to get through. A properly sealed garage door is one of the most effective ways to keep them out of your garage and away from stored vehicles, tools, and belongings. Visit our service areas page to confirm we cover your neighborhood.