2026-04-05 6 min read
Most home maintenance advice is written for somewhere dry. Ariel, Washington is not that place.
With close to 87 inches of annual precipitation. more than double the national average. and temperatures that dip near freezing on winter nights before climbing back into the 40s during the day, the seals on your garage door are working harder here than they would almost anywhere else in the country. When weatherstripping fails in a dry climate, you get some drafts. When it fails out here, you get standing water on your garage floor, mold behind stored boxes, rusting tools, and eventually rot or corrosion damage that costs far more to fix than the seal itself ever would have.
This guide is specifically written for Ariel homeowners. and those in nearby communities like Longview or Kelso. dealing with the real conditions we get along the lower Lewis River corridor.
The rubber and vinyl materials used in garage door weatherstripping are designed to stay flexible, but repeated temperature swings push them to their limits. Every time the overnight cold stiffens the seal and then afternoon warmth softens it again, the material fatigues. Combine that with months of near-constant moisture exposure and you get a seal that cracks, hardens, and loses its shape well before it would in a milder climate.
Most weatherstripping has a practical lifespan of three to five years in a Pacific Northwest climate. If you can't remember the last time yours was replaced, it's probably overdue. For more context on what a full seasonal prep routine looks like, our guide on preparing your garage door for storm season covers the broader picture beyond just the seals.
Your garage door has more than one point of contact with the elements. Here's a breakdown:
This is the rubber strip that runs along the bottom edge of the door and presses against the concrete floor when the door closes. It takes the most abuse. direct rain, standing water, freeze-thaw expansion and contraction, and the full weight of the door pressing down on it thousands of times. For Ariel's climate, rubber bulb seals or EPDM rubber bottom seals hold up better than vinyl. Vinyl gets brittle faster in cold, wet conditions.
If your driveway slopes toward the garage. common on the rural acreage properties throughout this area. also consider adding a threshold seal on the floor itself. This creates a raised barrier that stops surface water from running straight under the door before the bottom seal can stop it.
The vertical strips that run along both sides of the door frame. These seal out wind-driven rain, which in southwest Washington can arrive sideways during fall and winter storms. Check them for compression. if they're no longer pressing firmly against the door when it's closed, they've lost their shape and need replacement.
Often overlooked, the horizontal seal at the top of the door stops water from running down the face of the door and into the gap at the header. On older homes in the Ariel area. and there are plenty of ranch-style and cabin-style properties out here. this seal is frequently the one that gets ignored the longest.
You don't need special tools. Here's a quick inspection routine:
1. Light test: On a sunny day, close the garage door completely and turn off the interior lights. Look for any daylight showing around the edges or bottom. Any visible light means air and water can get through. 2. Feel the bottom seal: Run your hand along its full length. It should feel flexible and springy. If it's stiff, cracked, or flat in sections, it's time to replace it. 3. Check for water evidence: Look for water staining, rust spots near the floor, or any white mineral deposits along the bottom of the door frame. These are signs that water has been getting in consistently. 4. Press on the side strips: They should compress slightly and spring back when you release pressure. If they hold their compressed shape, the material has degraded.
If you spot damage during this check and you're also noticing issues like unusual sounds or sluggish movement, it's a good time to look at the full picture. our services page outlines what a comprehensive door inspection covers.
For Ariel's climate specifically:
- Rubber (EPDM): Best choice for the bottom seal in wet, cold climates. Stays flexible at low temperatures, durable, and holds its shape under repeated compression. - Vinyl: Fine for top and side seals where it isn't getting constant compression and moisture exposure. More mold-resistant than rubber. - Brush seals: Useful if your garage floor is uneven. the bristles conform to slight variations in the concrete surface better than a solid rubber bulb can.
Avoid cheap foam tape products for the bottom or sides. They compress permanently within a few months in our climate and offer almost no protection after the first wet season.
Replacing a bottom seal or side strip is a reasonable DIY project for most homeowners. It takes 30,60 minutes and the materials are inexpensive. However, call Garage Door Ariel if you're dealing with any of the following:
- The door itself isn't closing evenly, leaving gaps at one side or the corner. this is an alignment problem, not just a seal problem, and new weatherstripping won't fix it. - You're seeing water intrusion despite seals that look okay, which may indicate a drainage or framing issue around the door opening. - The door is warping or the panels show signs of moisture damage, which changes the sealing geometry entirely.
For a look at how labor and material costs break down on garage door repairs. including seal work. our post on understanding what goes into your repair bill is worth a read before you call anyone out.
A good seal is cheap. The water damage that follows a failed one is not. In Ariel's climate, this is one of those maintenance tasks that genuinely pays for itself.
In the Pacific Northwest's wet, temperature-variable conditions, plan on inspecting seals annually and replacing them every three to four years. sooner if you notice cracking, hardening, or water getting past them. Homes exposed to more direct weather, like those on open acreage near Lake Merwin with no overhead protection at the garage entrance, may need more frequent replacement.
A few possibilities: the door may be slightly out of alignment, leaving a gap at one corner even when the seal looks intact; the driveway slope may be directing water toward the door faster than the seal can redirect it (a threshold seal can help); or there's water coming in through the side seals or the base of the door frame rather than under the door itself. A quick inspection visit can usually identify the source in minutes.
For attached garages in Ariel, yes. especially if there's a living space above or adjacent to the garage. A well-sealed but uninsulated door still allows significant heat loss during our cold winters. Weatherstripping and insulation work together: the seal blocks air and moisture movement, while insulation slows heat transfer through the door panel itself. Reach out to us if you'd like a recommendation based on your specific door and setup.