Why Morton Homeowners Should Check Their Garage Door Seals Every Fall
2026-03-31 7 min read
If you live in Morton, you already know what the weather does here. The Cascade foothills aren't kind to anything made of rubber or metal. With close to 68 inches of rain falling every year and snow covering the ground for weeks at a time, your garage door's weatherseals take a beating that homeowners in drier climates never have to think about.
The problem is that most people don't notice failing seals until there's already a puddle on the garage floor, rust streaking down their door panels, or a musty smell they can't shake. By then, the damage has already been done. Catching it earlier. ideally every fall before the rainy season locks in. saves real money.
What Garage Door Weatherseals Actually Do
Your garage door has seals in four places: the bottom seal (the rubber strip pressed against the floor), the side seals (running up both vertical sides of the door frame), the top seal (along the header), and sometimes an astragal between double doors. Each one does the same basic job. close the gap between the door and the structure around it.
When they're working, they keep rain, wind, cold air, debris, and pests on the outside where they belong. When they fail, moisture gets in. In a climate like Morton's, that moisture doesn't evaporate quickly. It sits, and it corrodes the metal tracks, hinges, and spring hardware that your door depends on every single day.
Failed weatherstripping can also allow water staining on interior panels, rust formation on metal tracks and hardware, and corrosion of your opener's electrical components. problems that cost far more to repair than a simple seal replacement.
How to Know Your Seals Are Failing
The Visual Check
Run your eyes along the entire perimeter of the door in daylight. Look for rubber that has cracked, hardened, or compressed flat. Healthy weatherseal is flexible and springs back when you press it. Old seal material turns brittle, especially after a cold Morton winter where temperatures can drop below freezing for days at a stretch.
The Dollar-Bill Test
Close your garage door on a dollar bill at several points around the perimeter. Try to pull it out. If it slides free without resistance, the seal isn't doing its job at that spot. Repeat this at the corners and along the bottom. those are the areas that fail first.
The Light Test
At night, stand inside your closed garage with the lights off. Look for daylight showing around the door edges. Any visible light gap is a water-entry gap.
What to Replace and When
For most homes in Morton. and for neighbors in communities like Eatonville and Buckley who deal with the same wet Cascade foothills climate. weatherseals typically last three to five years before they need replacing. UV exposure during summer plus repeated freeze-thaw cycles during winter break down even quality rubber faster here than in drier regions.
Bottom seals take the most abuse because they contact the ground on every cycle. If yours is visibly compressed flat or has chunks missing, replace it before the November rains set in.
Side and top seals often crack and pull away from the door frame. For Pacific Northwest conditions, look for EPDM rubber or vinyl weatherstripping rated for continuous moisture exposure. these materials hold up significantly better than standard foam options when dealing with persistent dampness.
If you're also noticing issues with how your door moves, it's worth reviewing our guide on limit switch adjustment and safe operation. worn seals and misaligned door travel sometimes show up at the same time.
The Cost of Waiting
This is where homeowners make the most expensive mistake. A bottom seal replacement is a straightforward repair. But water that enters through a failed seal reaches your springs, cables, and opener components. In a high-rainfall environment, rust forms on spring coils quickly. A corroded torsion spring that fails unexpectedly is a far more serious. and expensive. problem than a $50 bottom seal.
Properly sealed doors in the Pacific Northwest can save $50,$100 annually per door through reduced heating bills and prevented water damage alone. That math works strongly in favor of staying ahead of seal maintenance.
If you're not sure what condition your seals are in, schedule an inspection before the wet season hits. Garage Door Morton serves Morton and the surrounding Lewis County area, and a seal check takes less time than most people expect.
DIY or Call a Pro?
Bottom seal replacement is one of the few garage door tasks that capable homeowners can reasonably handle themselves. The process involves removing the old retainer, sliding in new seal material, and securing it. about an hour of work on most standard doors.
Side and top seals are straightforward too, but getting a tight, even fit around the full perimeter takes a bit more patience. If you're replacing everything at once or if your door frame has warped slightly (common on older Morton homes), professional installation ensures the seal actually seats correctly and doesn't leak at the corners.
For a broader look at what to evaluate before and after any door service, our garage door feature checklist covers what matters most when assessing your system.
Check the services page to see the full range of maintenance and weatherproofing work available to Morton homeowners.
Frequently Asked Questions
How often should I replace my garage door weatherseals in Morton? Every three to five years is a reasonable baseline, but in Morton's climate. with close to 68 inches of annual rainfall and regular freeze-thaw cycles. inspect them every fall. If the rubber is cracked, hardened, or compressed flat, replace it regardless of age.
What's the best seal material for wet Pacific Northwest weather? EPDM rubber and vinyl are the best choices for continuous moisture exposure. Standard foam weatherstrip compresses and deteriorates quickly in high-rainfall environments like Morton's and should be avoided as a long-term solution.
Can a failed bottom seal damage my garage door springs? Yes. Water that enters through a worn bottom seal pools on the garage floor and creates persistent humidity that accelerates rust on spring coils, hinges, and cable hardware. Replacing a failed seal early is far cheaper than dealing with corroded mechanical components later.