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ThoroldGarage Door Repair Co.Open 24/7 (365) 364-0203
Black bottom seal along a closed white garage door at a concrete threshold. — Garage Door Bottom Seal Replacement, Thorold

Repairs · Thorold

Garage Door Bottom Seal Replacement

With the door closed and the lights off, a bright line of daylight runs along the floor from one side to the other. Leaves and grit have blown in under it and gathered in a neat drift against the back wall.

In plain words

The material matters as much as the shape when the garage sees real winters. Vinyl is the common choice: it resists moisture and sun well but grows stiff in deep cold and stops moulding itself to the concrete. Rubber stays supple at low temperatures and follows an uneven floor, though it can harden after many years of sun. Silicone keeps its flexibility through hot and cold alike and resists cracking, at a higher cost per metre. Choosing the right compound for a door that faces the weather is part of the service, and it is one reason a replacement seal often outlasts the one it replaces.

Sound familiar?Thorold

The call
After a spring rain there is a puddle inside the door that reaches the tires. The driveway slopes toward the garage, the slab has a low corner, and the flattened old seal is not making up the difference.

NextHow the visit goes

Garage Door Bottom Seal Replacement · Thorold

How the visit goes

Illustrative garage doors scene — Thorold
  1. Scene 1

    The bottom section and its rail

    The seal can only be as straight as the edge it hangs from, so the bottom section gets a careful look. On a steel door the technician checks the bottom rail for rust where salt water has sat, dents from a bumper or a shovel, and any bow across the width. On a wood door the rail is checked for rot, cupping and the upturned corners of an old door that has dried unevenly. Fasteners for the retainer and the bottom brackets are checked for corrosion. A sound, straight rail lets a standard seal do its job; a damaged one is pointed out so you can decide on repair, a taller seal, or both.

  2. Scene 2

    Wood doors and nail-on strips

    A wood garage door usually carries a flat or angled strip of vinyl or rubber nailed directly to the bottom rail rather than a channel seal. The technician removes the old strip and nails, checks the rail for soft spots and cupping, and treats or dries damp wood as needed. The new strip is positioned so its lip angles toward the outside and touches the floor along the full width, then fastened with galvanized nails or screws at close, even spacing so it cannot ripple. On a rail that follows an uneven floor, the strip's flexibility takes up the difference.

  3. Scene 3

    The opener stays in step with the seal

    The opener was reset to the new seal height, and it will hold that setting until something changes. If the door begins to reverse just before the floor, stops short and leaves a gap, or lands with a thump, the down limit or force has drifted or the seal has taken a set, and a small adjustment puts it right. The reversing test with a 38 mm (1.5 in) solid object, or a 2x4 laid flat under the door, is worth repeating monthly and after any adjustment, as the industry checklist for homeowners describes. A door that closes gently and reverses on an obstruction is one whose seal and opener are working together.

In the van

  • Aluminum bottom seal retainer
  • Track clamps
  • Threshold seal and adhesive
  • Self-drilling retainer screws
  • Straightedge and tape measure

What shapes the quoteThorold Garage Door Repair Co.

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

(365) 364-0203

Frequently asked questions

Should I choose the tallest seal available?

Not as a rule. The seal should fill the measured gap with a little compression to spare. A profile far taller than the gap gets squashed flat, wears at the fold, bows the bottom section and can make the opener reverse. Where the floor dips at one end, a taller bulb is the right call for that door; where the floor is flat, a standard height lasts longer. Measuring first is what settles it.

What is a threshold seal, and when is it worth adding?

A threshold seal is a rubber or aluminum-backed strip glued to the garage floor along the line where the door closes. The door's bottom seal lands on it, and its raised outer edge turns water, wind-blown debris and small visitors back toward the driveway. It earns its place where the drive slopes toward the garage, the slab sits below the apron, or the floor edge is too uneven for the bottom seal alone to meet cleanly.

How long does a bottom seal last?

Several years is typical, with the range set by exposure. A door facing south or west, a threshold that is wet and salted all winter, and a seal that freezes to the floor a few times a season all shorten the life. A shaded door on a dry slab with a wipe of silicone each autumn can go much longer. The condition of the strip, rather than its age, is what to watch.

Thoroldinformation

NiagaraOntario

Garage Door Bottom Seal Replacement · Beaver Dams, Thorold Park, Thorold South, Allanburg, Port Robinson

Town
Thorold, Niagara
In business
24 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.

  • 55 in 100 homes · older homes
  • About 55% of homes in Thorold were built in 1980 or earlier, according to the 2021 Census.Where houses are older, the garage often sits beside the house rather than beneath a bedroom, so noise is a smaller concern and durability a larger one. Heavy-duty rollers, a properly sized torsion spring and cold-rated lubricant make an old door dependable for years.
  • Single-detached houses make up about 69% of homes in Thorold (2021 Census).Households in detached homes often have several remotes, a keypad and a phone app between family members and their cars. We keep all of them programmed to the opener, replace the ones that have failed, and explain how to add a new one when a car changes hands.

Source: Statistics Canada, Census Profile

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On-site assessment

Request a visit.

With the door closed and the lights off, a bright line of daylight runs along the floor from one side to the other.

(365) 364-0203, open 24/7.