Salt Lake City, UT · Garage Door Service
Salt Lake City's housing, built mostly 1969 to 2007, meets severe winter cold that wears out garage door weather seals fast. Know when a draught means call.
If you can see daylight along the bottom of your garage door, or feel a steady draught around the sides when it's shut, that's a seal problem worth fixing now, not later. Most houses across the Salt Lake City service area - Sugar House, Rose Park, Poplar Grove, Capitol Hill, Rio Grande, the Avenues - went up between 1969 and 2007, with the bulk of that stock dating to the 1980s and '90s. That means the bottom astragal and side seals on a lot of doors are original or close to it, and vinyl doesn't hold up forever against a hard freeze. Call for a look if the draught is new, if you see ice forming at the base of the door on cold mornings, or if the gap has gotten wide enough that you can slide a finger under the corner. A seal that's cracked in more than one spot, or pulling loose from its track, is past the point where a bead of caulk fixes it. If the door itself is still square and closes flush, a seal swap is usually a short job. If the bottom panel is bent or the track is pulled away from the jamb, that's a different repair, and we'll tell you that on the spot rather than sell you a seal that won't hold.
Not every draught needs an appointment this week. If the gap is small, the door still seals flush along most of its length, and you're not seeing water or ice inside the garage, you can watch it through one more cold stretch. A slightly stiff seal that still makes contact with the slab is doing its job even if it looks worn. Here's the honest limit, though: we don't recommend resealing a door with a warped bottom panel or a track that's shifted out of plumb. Putting a new seal on a door that isn't sitting square just buys you a few weeks before the same gap reopens somewhere else along the base. If your house falls in the 1969-2007 build range that covers most of this area, and the seal has never been replaced, it's worth checking now rather than waiting for the coldest week of the year to find out it's failed. Waiting is a reasonable choice when the fix is cosmetic. It's not a reasonable choice when cold air is reaching the wall behind the door or when moisture is pooling at the base, because that's a sign the seal has already stopped doing its one job.
Salt Lake City sits in a cold, severe winter climate band, and that matters more for a garage door seal than almost anything else on the house. Vinyl and rubber both stiffen as temperatures drop, and repeated freeze-thaw cycles through the winter months work seals loose at the corners faster than steady cold alone would. A seal that flexed fine in October can crack by January once it's gone through several nights near or below freezing. That cycle is harder on older seals, which is relevant here because so much of the housing stock in this service area - the 1980s and '90s construction that makes up the bulk of it - is carrying seals that have already been through decades of that same freeze-thaw pattern. The result shows up as a draught at the bottom corners first, then along the sides as the material keeps contracting. None of this is unique to any one seal brand or door model; it's a function of how many winters the material has been through and how cold those winters get here. A seal rated for a milder climate simply doesn't last as long once it's doing this job every winter in this area.
The mechanism is straightforward. Bottom seals are usually a PVC or rubber astragal that relies on staying flexible enough to press flat against the slab. Cold makes that material contract and stiffen, and once it's stiff it stops flexing into small gaps in the concrete, especially at the corners where the slab often isn't perfectly level to begin with. Once a gap opens, cold air moves through it, and any water that gets under the door can freeze there, which widens the gap further before the next thaw. Median housing in the Salt Lake City area dates to around 1987, so a seal that came with the house at construction is long past any reasonable service life, and even a first replacement seal put in ten or fifteen years ago has been through a lot of severe winters since. This is why a draught complaint in this area is rarely about a bad install - it's about material that's done what vinyl does after enough cold cycles. We can't make a seal outlast the climate it's sitting in. What we can do is match the seal type to the gap you actually have and get the door closing flush again, which is usually most of the fix.
Cold makes the bottom vinyl seal stiffen and shrink slightly, so it stops pressing flat into small dips in the slab, especially at the corners. The door can look shut while the seal has already pulled away enough to let a draught through. This gets worse as the winter goes on and the seal goes through more freeze-thaw cycles.
Median housing here dates to around 1987, and a lot of original seals from that era are well past a reasonable service life given how many severe winters they've been through. If you don't know when yours was last replaced and you're feeling a draught, it's worth checking rather than assuming it still has life left.
Caulk can buy a little time on a small, stable gap, but it won't flex with the door and won't hold up through a cold winter here. If the seal is cracked in more than one place or the gap keeps reopening, caulk is a stopgap, not a fix, and you'll likely be back at it by the next freeze.
Call now or request a free quote - same-day service on most repairs, upfront written pricing.
