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A person kneels beside the black bottom seal of a garage door, with daylight visible beneath the edge. — Garage Door Bottom Seal Replacement, Collingwood

Plan ahead Repairs · Collingwood

Garage Door Bottom Seal Replacement

There are mouse droppings along the wall behind the recycling bins, and at one bottom corner of the door the vinyl has a neat chewed notch the width of a thumb. Something has found its way in for the winter.

Call now · open 24/7(249) 499-8812

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In plain words

A seal visit runs in a set order. With the door closed, the technician looks for daylight along the floor line and notes whether the gap is even or concentrated at one point. The door is checked for level and the bottom section for straightness, then the retainer is identified and measured. The opener is disconnected and the door secured before the old strip comes out and the channels are cleaned. A new seal, cut a little long, is fed into the channels and trimmed. Finally the door is closed onto the new seal, the opener's limits are reset, and the reversing test is run before the tools go away.

Sound familiar?

One end of the bottom seal has slipped out of its channel and hangs down like a loose shoelace. Each time the door closes it folds under, each time it opens it flaps, and the gap beside it keeps growing.

How the visit goes

Garage Door Bottom Seal Replacement · Collingwood

How the visit goes

Illustrative garage doors scene
  1. 1

    Which retainer and which profile

    Next the retainer along the bottom rail is identified. Most steel doors carry an aluminum extrusion with two channels that take the T-shaped or beaded edges of a U-shaped seal; some insulated doors have the channel moulded into a plastic bottom cap; older doors may have a single channel; wood doors often have a strip nailed straight to the rail. The technician measures the channel spacing and the T or bead size, checks the door width, and notes the height of the old strip. A seal chosen from these measurements slides in cleanly and holds, which is the difference between a replacement that lasts and one that works loose.

  2. 2

    Feeding the seal into the retainer

    Both edges of the new seal are started into their channels together at one end of the door. A spray of soapy water or silicone on the edges lets the strip glide, and the technician works it across in stages, pulling gently from the front end and feeding from the other so the seal is never stretched, since a stretched seal shrinks back and leaves a gap later. Once it is across, the bulb is checked to hang evenly with no twists. The ends are trimmed flush with the door and folded up into the channel or capped, so water running along the seal drains out rather than into the section.

  3. 3

    Keeping the new seal from freezing down

    The habit that does the most for a bottom seal in a cold climate is a wipe of silicone spray along the seal face each autumn and again mid-winter. It leaves a film that meltwater struggles to bond to, so the strip lifts off the slab cleanly on a frosty morning. Avoid petroleum-based sprays, which soften vinyl. If the door does freeze to the floor, leave the remote alone: free the seal by hand with gentle warmth from a hair dryer or by working a plastic scraper along the line, then run the door. A minute of patience keeps the new seal whole.

In the van

  • Silicone spray lubricant
  • Self-drilling retainer screws
  • Nail-on vinyl strip for wood doors
  • Straightedge and tape measure
  • T-style bottom seal

What affects the quote

  1. 1

    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.

  2. 2

    Threshold seal added

    Where a floor threshold is recommended, its length, its type, whether rubber or aluminum-backed, the adhesive and the floor preparation before it is laid appear as a line of their own.

  3. 3

    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.

Same fees day, night or weekend.

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Garage Door Bottom Seal Replacement: questions

Advice · (249) 499-8812

What happens during the visit?

The technician maps the gap with the door closed, checks the door is level and the bottom section straight, and identifies the retainer and profile. The opener is disconnected and the door clamped at working height. The old seal comes out, the channels are cleaned, a new seal is cut and fed in, and any retainer work is done. The door is then closed under power, the opener reset, and the reversing and photo-eye tests run.

What are bottom seals made of, and which suits cold weather?

Most are vinyl, which resists sun and moisture well but stiffens in deep cold. Rubber compounds stay flexible at low temperatures and follow an uneven floor closely, though they can harden after many years of sun. Silicone stays supple in heat and cold and resists cracking, at a higher cost. For a door that faces the weather, a rubber or silicone profile is usually the sounder long-term choice.

What does a new bottom seal do about water coming in?

It closes the gap between the door and the slab so rain and meltwater meet a continuous barrier. Where the driveway slopes toward the garage, or the slab edge has dipped, the seal alone is working against gravity, and a threshold seal glued to the floor adds a lip that turns water back toward the drive. The technician looks at where the water comes from and recommends the combination that suits your threshold.

Simcoe, Ontario

Collingwood information

Town
Collingwood, Simcoe, Ontario
In business
32 years
Hours
Open 24/7 · nights, weekends and holidays, same fees
Visits
On-site assessment preferred. Request a visit or call.

What the census means at the door

40%

Homes of every age. About 40% of homes in Collingwood were built in 1980 or earlier, according to the 2021 Census.

Where houses span several decades, weatherproofing needs vary: older garages with uneven aprons need thicker bottom seals, newer ones mainly need cracked seal sections replaced. The technician looks at how the door meets the floor and the jambs and fits the seal that actually closes the gap.

56%

A mix of homes. Single-detached houses make up about 56% of homes in Collingwood (2021 Census).

In areas mixing houses with townhouses and condos, a technician often works on several doors on one street, some owned outright and some looked after by management. Scheduling them together saves everyone time, and we are glad to plan a visit that covers the group.

Source: Statistics Canada, 2021 Census of Population

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Open 24/7

Request a visit

There are mouse droppings along the wall behind the recycling bins, and at one bottom corner of the door the vinyl has a neat chewed notch the width of a thumb.

Call now · open 24/7(249) 499-8812
  • On-site assessment preferred
  • Same fees day, night or weekend
  • 32 years in business