Why Your Lakewood Garage Door Lets the Cold In

By Lakewood Garage Door Pros · Published October 12, 2026 · Updated October 28, 2026

When to Call Someone

If you can see daylight under the bottom of the door, or feel a steady draft along the sides when the wind picks up, that's not something a can of spray foam fixes for good. Call when the bottom seal has cracked into pieces instead of bending, when the weatherstripping along the vertical tracks has pulled loose from its channel, or when a cold snap leaves a visible gap that wasn't there in October. Most of the houses in this service area were built between 1938 and 2005, with the bulk going up in the 1960s and 70s, so the seal material on a lot of these doors is well past its working life even if it still looks intact from the driveway.

One honest limitation: if the door itself has warped or the track has bent from years of contraction and expansion, a new seal won't solve the draft. At that point you're better off replacing the weatherstripping and the bottom astragal together, or in some cases the whole bottom section. Don't let anyone talk you into a seal-only fix if the track alignment is the real problem - that's a callback waiting to happen.

What Local Conditions Do

This area sits in a COLD severe climate band, which doesn't just mean low numbers on the thermometer. It means the freeze-thaw swing - a hard overnight freeze followed by a 50-degree afternoon, then another freeze - happens over and over through the winter months. That cycle is harder on seals and tracks than steady cold ever would be. Vinyl and rubber weatherstripping contracts in the cold snap, then tries to re-expand as it warms, and after enough cycles it stops snapping back into shape.

Aluminum tracks do the same thing on a smaller scale, and across a build era centered on 1976 (the median year for housing here), most of those tracks have gone through decades of this swing already. The households in this service area - all 188,477 of them, with 81,569 owner-occupied - are sitting on housing stock old enough that the original seal material has usually already failed once, sometimes been patched, and is due again. This isn't a one-time problem; it's a maintenance item tied directly to the climate band we're in.

What Is Going On

Here's the mechanism, plainly: the bottom seal is a vinyl bulb that's supposed to compress against the slab and flex with temperature. In a COLD severe band, repeated freeze cycles make that vinyl brittle. Brittle vinyl doesn't compress - it cracks, flattens, or tears away from the retainer, and once it's gone, cold air and meltwater both get a clear path under the door. The side and top weatherstripping works the same way against the jamb, and on houses from the 1960s-70s stock that makes up most of this area, that stripping is often the thinner, harder style that was standard for the era, not the dual-fin vinyl used now.

There's a second piece: stamped steel or aluminum track brackets shrink slightly in deep cold, which can open a small gap between the door panel and the track seal even when the weatherstripping itself is fine. That's a draft that looks like a seal problem but is actually a track-tension issue, and it needs a different fix - tightening and re-seating the track, not just swapping rubber.

Season by Season

Late fall is when to check seals before the first hard freeze locks a crack in place - press a thumb along the bottom bulb and the side stripping; if it doesn't spring back, replace it now rather than in January. Winter is when the freeze-thaw cycling does its damage, so this is when drafts actually show up and get reported, usually after the first week of real cold.

Spring brings meltwater and runoff, and in a climate band like this, that water finds any gap left by a winter-cracked seal and brings it indoors instead of just letting cold air through. Summer is the slow season for seal failure here, but it's the right time to replace anything that cracked over the winter, since parts lead times are shorter and you're not racing a storm. If you're in Belmar Park, Green Mountain, Union Square, or out toward Applewood and Eiber, the pattern repeats the same way - same build era, same seal material, same cycle.

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