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HockleyValley Garage Door ExpertsOpen 24/7 (226) 917-2730
Black bottom seal along a closed white garage door at a concrete threshold. — Garage Door Bottom Seal Replacement, Shelburne

Repairs · Shelburne

Garage Door Bottom Seal Replacement

Every mild afternoon the snow melts off the car, runs to the door, and by morning the rubber strip along the bottom is frozen to the concrete. Last week the opener lifted the door and left half the seal on the floor.

In plain words

The bottom seal, called an astragal in the trade, is the flexible strip along the underside of the lowest door section that squashes against the floor when the door closes. On most steel doors it is a U-shaped vinyl or rubber profile whose two edges slide into the channels of a retainer fixed to the bottom rail; on wood doors it is often a flat angled strip nailed in place. Replacing it means matching that retainer and profile, fitting a fresh seal the full width of the door, and confirming it meets the floor in one continuous line so light, drafts, water and pests lose their route in.

Sound familiar?Shelburne

The call
The gap under the door is a finger wide at one end and nothing at the other. The door itself looks straight, but the floor drops away toward the corner where the slab has settled, and drafts pour through the wedge.

NextHow the visit goes

Garage Door Bottom Seal Replacement · Shelburne

How the visit goes

Illustrative garage doors scene — Shelburne
  1. Scene 1

    Is the door hanging level?

    A gap that is wider at one corner is often the door rather than the seal. The technician checks that the door sits square in the opening by comparing the bottom edge to the floor at both ends and looking at how each lift cable wraps its drum. A stretched cable, a drum that has crept on its shaft or uneven spring tension drops one corner a centimetre or two, and setting the door level is what closes that wedge. If the door is out of level, the adjustment is explained as its own item and done first, and the seal is then sized to the gap that remains. Getting the order right saves fitting a seal twice.

  2. Scene 2

    Closing the door onto the new seal

    The clamps come off, the opener is reconnected, and the door is run closed under power while the technician watches the bottom edge meet the floor. The down limit is adjusted so the seal compresses gently along its full length without the section bowing, and the force setting is checked so the door settles onto the new, taller strip without reversing. From inside with the lights off, the floor line is checked again for daylight. The reversing test with a 38 mm (1.5 in) solid object, or a 2x4 laid flat under the door, and the photo-eye test finish the visit, and you are shown the door closing before the ladder is packed.

  3. Scene 3

    A record of the profile and size

    Before leaving, the technician tells you what went on the door: the seal profile, whether T, bead or bulb, its width and height, the material, the door width it was cut for, and whether the retainer was renewed. Write this on a card by the opener or inside the manual. Bottom seals wear out on a schedule of years rather than decades, and knowing the profile means the next one can be ordered and fitted without measuring from scratch. If a threshold seal was added, its length and type belong on the same card.

In the van

  • Wire brush and scraper
  • T-style bottom seal
  • Straightedge and tape measure
  • Self-drilling retainer screws
  • Aluminum bottom seal retainer

What shapes the quoteHockley Valley Garage Door Experts

Number of doors
Two single doors are two seals, two inspections and two opener resets. The travel is shared, so doing both in one visit costs less than two separate calls.
Floor and threshold shape
A dished, sloped or heaved slab may call for a taller bulb profile or a threshold seal on the floor, each of which is quoted as a separate choice you can accept or leave.
Retainer replacement
If the aluminum or plastic retainer is bent, spread open or corroded, a new extrusion, fasteners and the time to fit it straight along the rail are added as their own line.

FeesSame any hour

Have it ready

Before you call · 0 / 3

(226) 917-2730

What people ask us

Can the seal be replaced in the middle of winter?

Yes, and winter is when most people notice they need one. Vinyl is stiffer in the cold, so the technician keeps the new roll warm until it is fed and takes a little longer working it across the channels. A seal frozen to the floor is freed by hand first. The door is then closed onto the new strip and the opener reset exactly as in summer, and the garage is sealed for the rest of the season.

Is this something I can do myself?

Many homeowners do, and a technician's value lies in the parts that go wrong: identifying the exact profile so the seal seats, freeing a strip that has fused into its channel, spotting a retainer or door-level problem behind the gap, and resetting the opener's limit and force so the door lands gently and still reverses on an obstruction. If you would rather have it measured, fitted and tested in one go, that is what the visit is for.

What information helps when I book?

The width of the door and whether it is a single or double; what is getting in, whether light, drafts, water, snow or pests, and where along the door; whether the gap is even or worse at one end; the door material; and a photo of the end of the bottom section showing the retainer and seal. Mention if the seal has frozen to the floor or if the door has been reversing before it closes.

Shelburneinformation

DufferinOntario

Town
Shelburne, Dufferin
In business
32 years
Hours
Open 24/7
Nights, weekends and holidays, same fees
Visits
On-site assessment preferred. Request a visit or call.

2021 census: what it means at the door

Every square is one home in a hundred.

  • 39 in 100 homes · mixed ages
  • About 39% of homes in Shelburne were built in 1980 or earlier, according to the 2021 Census.In areas with a spread of building periods, garage doors fail for different reasons on the same street: worn pulleys and stretched cables on the older doors, cycle-limit springs and tired opener gears on the newer ones. Knowing which pattern applies shortens the diagnosis.
  • Single-detached houses make up about 73% of homes in Shelburne (2021 Census).Where houses are detached, a side door into the garage and an interior door into the house are common, so the garage door is one of several ways in. Making sure it closes fully, locks properly and has its old remote codes cleared keeps the whole house secure.

Source: Statistics Canada, Census Profile

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On-site assessment

Request a visit.

Every mild afternoon the snow melts off the car, runs to the door, and by morning the rubber strip along the bottom is frozen to the concrete.

(226) 917-2730, open 24/7.