That gap of daylight under your garage door isn't just letting in cold air — it's an invitation for mice, snow melt, and dust. Weather seals are the most overlooked part of a garage door, and in Central Oregon they fail faster than anywhere at sea level.
Why Seals Fail Faster in Bend
At 3,600 feet, UV exposure is roughly 25% more intense than at sea level. That constant bombardment breaks down rubber and vinyl compounds years ahead of schedule. Add 150+ freeze-thaw cycles per year — where the seal freezes to the concrete overnight and gets torn when you open the door in the morning — and you're looking at a 5-year lifespan instead of the 10 years the manufacturer promises.
Fine volcanic pumice dust is the other killer. It works into the seal material like sandpaper, accelerating wear along the bottom edge where the door meets the floor.
Signs Your Weather Seal Needs Replacing
Check these every fall before winter hits:
- Visible light — stand inside with the door closed on a sunny day. Any light coming through the bottom means the seal has failed.
- Water intrusion — wet spots on the garage floor after rain or snowmelt, especially along the door line.
- Cracked or brittle rubber — press your thumbnail into the seal. If it cracks or doesn't spring back, it's done.
- Gaps at the corners — seals shrink in cold weather. If there are gaps where the bottom seal meets the side seals, cold air is getting in.
- Pest evidence — mouse droppings, spider webs, or insect debris near the door bottom means critters are finding their way through.
Types of Weather Seals
Bottom Seal (Most Important)
The bottom seal takes the most abuse — it's compressed every time the door closes and exposed to standing water, ice, and debris. For Central Oregon, we recommend heavy-duty rubber seals over vinyl. Vinyl cracks in cold; rubber stays flexible down to -20°F.
Side and Top Seals
These get less wear but still matter. Side seals (also called astragal or jamb seals) close the gap between the door edge and the frame. Top seals prevent rain from dripping down behind the door header. Both should be checked annually.
Threshold Seal
A threshold seal mounts to the garage floor and creates a secondary barrier. We strongly recommend these for attached garages in Bend and Sunriver where snow melt is a constant issue. They also help with uneven concrete floors.
DIY vs Professional Replacement
Bottom seals are DIY-friendly — most slide into a channel along the bottom panel. Side and top seals are also straightforward. Threshold seals require adhesive and careful alignment but aren't dangerous.
Where you need a pro: if the bottom retainer channel is bent, rusted, or missing. If the door itself is warped and doesn't sit flat against the seals. Or if you want the whole system done right in one visit — we can replace all seals, check the door balance, and make sure everything is sealed tight in about an hour.
When to Call Us
If you're seeing light, water, or pests under your garage door, it's time. We stock UV-resistant seals rated for Central Oregon's climate and can usually do the job same-day. Call 541-203-7676 for a free assessment.