Redmond, WA · Garage Door Service
Most Redmond garage doors date to 1965-2005. Here's what that build era means for weather seals, draughts, and why a cold-moderate climate wears them out faster.
The call we get most is "my door won't seal right" when what's actually happening has nothing to do with the door panel at all. Across Redmond's 42 named areas, the housing stock runs 1965 to 2005 with a median build year around 1985, and that era of construction used vinyl bottom seals and aluminum thresholds that were never built to last the life of the house. Owners hear wind whistle under the door and assume the whole unit needs replacing. Most of the time it's a $20 part.
The second mistake is caulking or foaming the gap shut instead of replacing the seal. That traps moisture against the slab and rots the bottom panel from the inside, which is a worse and more expensive problem than the draught ever was. We won't do that repair even when a customer asks for it - sealing over a bad seal instead of swapping it just delays the real fix and adds a second one.
The third mistake is ignoring the top and side seals because the bottom one is the obvious culprit. On a door installed in the 1980s or 90s, all three are usually original, and they age out together, not just the one you can see daylight through.
Redmond sits in a cold-moderate climate band - not the hard freezes of the mountain passes, but enough of a seasonal swing that vinyl seals contract every winter and expand back every summer. That repeated flex is what breaks vinyl down faster than sun exposure alone would. By the time a seal is 15 to 20 years old, which describes a large share of the 1965-2005 stock still running original hardware, it's stiff enough to crack rather than compress when the door closes.
Fall is when most owners first notice it: temperatures drop, the seal has already lost flexibility from the previous winter, and the first cold snap opens a visible gap at one or both bottom corners. Winter is when it costs money - cold air moving under an attached garage door pulls heat out of whatever room shares that wall. Spring is when condensation shows up on the inside of the panel, because a stiff seal lets in humid air that a fresh one would have kept out. Summer is the only season the problem hides, which is exactly why it gets ignored until fall again.
Walk through Education Hill or North Redmond, both a mile or two out, and you'll find the same setup on door after door: an aluminum threshold track from the original install, paired with a vinyl bottom seal that's been recaulked more than once instead of replaced. That combination is typical of the 1980s-90s construction that makes up most of this area's garages.
Further out - Southeast Redmond, Overlake, Grass Lawn - the same build window shows up with wood door jambs instead of steel. Wood jambs from that era move with humidity and temperature over 30-plus years, and once a jamb bows even slightly, no amount of seal replacement closes the gap at the top corners. That's a jamb repair job, not a weatherstripping job, and it's worth knowing the difference before you pay for the wrong one.
We don't do general carpentry or structural jamb repair - if the frame itself has moved, that's outside what we handle, and we'll tell you so rather than sell you a seal that won't fix it.
Mechanically, it's simple. A vinyl bottom seal is designed to compress against the slab and spring back. Cold makes vinyl lose elasticity; heat cycles it back and forth until the material fatigues. In a cold-moderate climate like Redmond's, that fatigue happens on a slower timeline than somewhere with hard freezes, but it still happens - and most of the seals doing that job in this area were installed when the house was built, sometime in that 1965-2005 window with a median around 1985.
Side and top seals fail the same way but get noticed later because the draught they let in is less obvious than a gap you can see under the door. Aluminum thresholds, common in the 1980s-90s builds, corrode at the screw points over time and stop holding the seal flush, which shows up as a draught that moves side to side rather than staying in one corner.
None of this is dramatic. It's ordinary material fatigue on ordinary hardware, running on a schedule set by how the house was built and how many winters it's been through since.
Close the door and look along the bottom edge with a flashlight from inside the garage. Daylight in one or two spots usually means the seal has hardened or cracked. Daylight along the whole bottom edge, or gaps at the top corners too, points to a jamb or threshold problem instead of just the seal.
Vinyl seals stiffen further each cold season once they pass a certain age, so the draught you barely noticed two winters ago can feel a lot worse this year without anything else changing. It's cumulative material fatigue, not a new problem - the seal has just crossed a point where it stops compressing properly.
No. Caulk or foam over a failed seal traps moisture against the bottom panel instead of letting it drain, which can rot steel or wood panels from the inside. Replacing the seal itself is usually a small job - sealing over it just delays that job and adds panel damage on top.
It's common. A lot of the housing stock in this area dates to that build window, and many owners have never had the weatherstripping replaced since. If the seal is original, it's well past the point where vinyl stays flexible, and that's usually the first thing worth checking before assuming the door needs bigger work.
Call now or request a free quote - same-day service on most repairs, upfront written pricing.
