Weather Seals and Draughts: What Madison Homeowners Should Check
Madison garage doors from the 1962-2001 building wave often have worn seals. See what to check season by season in our cold-moderate Wisconsin climate.
Start at the bottom of the door. The bottom seal, sometimes called the astragal, is a bulb of rubber or vinyl that presses against the slab on your garage floor. On houses built in the 1962-2001 wave that makes up most of this service area, this seal is usually original if nobody's replaced it, and by now it's often brittle enough to crack when you bend it. Check for daylight along the bottom edge on a bright afternoon.
Next, look at the vertical stops on both sides of the frame and the header seal at the top. These strips wear thin where the door brushes past thousands of times a year, and on 1980s and 90s stock they're often a single flat piece rather than the double-fin style used in newer installs. Run your hand along the frame with the door closed - if you feel air moving, the seal has quit doing its job.
Last, check the panel seams themselves if your door is original to a house from this era. Doors from that build wave weren't always insulated, and gaps between panels let cold air track straight into the garage, which matters if you keep a freezer or workbench out there.
Season by Season
In a cold-moderate climate band like this one, seals do different jobs depending on the month. Winter is the hard test - vinyl and rubber both stiffen as temperatures drop, and a seal that looked fine in October can crack the first time it hits single digits. That's when owners notice the draught: cold air pooling along the garage floor, frost forming on the inside of the door skin, a wall shared with the house feeling colder than it should.
Spring brings freeze-thaw cycling, which is harder on seals than steady cold. Water gets into small cracks during a thaw, then expands when it refreezes overnight, widening the gap a little more each cycle. This is usually when a seal that survived winter finally gives out.
Summer heat does the opposite kind of damage - it softens vinyl and lets it sag out of its track, so the seal stops making full contact with the slab even though it isn't cracked. Fall is the window to catch all of it: check the seals before the first hard freeze, because once the cold sets in, a compressed or cracked seal stays that way until you replace it.
What Is Going On
Most of the draught complaints we look at trace back to the same thing: a seal or weatherstrip that's outlived its material. Vinyl typically starts losing flexibility somewhere in its second decade, and a lot of the doors in this service area are original to houses built between 1962 and 2001 - median year 1986 - which puts plenty of them well past that point.
The other piece is what these doors were built with in the first place. The bulk of the stock here dates to the 1980s and 90s across the 28 named areas we work in, and doors from that period commonly used a single bottom seal and thin side stops, without the foam-core insulation or double-fin weatherstripping that's standard on doors sold today. That's not a defect - it's just what was normal to install decades ago. It means a door that's never been touched is leaking more air than a comparable newer install, even with zero visible damage.
One honest note: if the door itself is warped or the track has shifted, a new seal won't fix the draught. At that point you're looking at a door or track repair, not a cheap weatherstrip swap.
How Local Conditions Play In
This service area sits in a cold-moderate band, which is a rougher environment for seals than it sounds - the swing between summer heat and winter cold is what breaks vinyl down, more than the cold alone. Combine that with a housing stock where the median build year is 1986, and you've got a lot of original seals doing decades more work than they were designed for.
With 37,541 owner-occupied houses among roughly 87,219 households across this service area, and a median household income of $98,943, most of the calls we get are owners choosing to fix the draught properly rather than stuff a towel under the door and wait. That tracks with what we see out toward Middleton and Waunakee too - the same 1962-2001 build wave shows up there, and it's the same seals failing for the same reasons.
If you're closer in, near Monona or over toward Fitchburg, the story's the same: houses from that era, seals from that era, and a climate that doesn't forgive a cracked bottom seal once January sets in. The fix is usually straightforward, but it does need doing before the cold, not during it.
How it works
From “it’s stuck” to “it’s fixed”
01
Tell us what’s wrong
Describe the symptom - won’t open, loud bang, opener runs but the door won’t move.
02
On-site diagnosis
A technician tests the door under power and by hand and finds what actually failed.
03
Clear, up-front plan
You get the fix that’s needed and what drives the cost - before any work starts.
04
Repaired & tested
The repair is done, the door is set true and tested, and the work area left clean.
Serving Madison, WI - tell us what your door’s doing and we’ll take it from there.
How do I know if it's the seal and not the door itself?
Check for daylight along the bottom edge and feel for moving air around the frame with the door closed. If the seal looks intact but you still feel a draught, the track may have shifted or the door panel may be warped, and a new seal alone won't fix that - you're into a repair job, not a $30 part.
How often do garage door seals need replacing in Madison?
There's no fixed number in our data, but vinyl generally loses flexibility within a couple of decades, and a lot of the doors here are original to houses built between 1962 and 2001. If your seal is original to the house, it's likely well past a useful life span for our cold-moderate winters.
My garage door is original to a house from the 1980s - is that a problem?
Not a defect, just an older standard. Most stock from that era across this service area shipped with a single bottom seal and thin side stops, without the foam-core insulation or double-fin weatherstripping used today. That means more air leaks through even undamaged seals compared to a newer install.
Ready to get your garage door sorted?
Tell us what it’s doing and where you are in Madison - we’ll take it from there.
