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Person fitting a black strip along the bottom edge of a partly raised garage door, with a cracked strip lying on the floor. — Garage Door Bottom Seal Replacement, Whitby

Plan ahead Repairs · Whitby

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.

Call now · open 24/7(289) 278-1736

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In plain words

What you have afterwards is a door that closes onto a single soft line of contact from jamb to jamb. Daylight under the door is much reduced, the draft across the floor eases, wind-blown leaves and snow are kept out more effectively, and the tighter gap makes the route in harder for mice. The opener has been reset so the door lands gently on the new strip instead of pressing it flat. You also leave knowing the seal's profile and size, which makes the next replacement a matter of one phone call, and a couple of simple habits for winter that keep the new seal from freezing to the floor.

Sound familiar?

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.

How the visit goes

Garage Door Bottom Seal Replacement · Whitby

How the visit goes

Dark wall-mounted box with a plug-in adapter and sensor beside a garage door, above a workbench with a drill and screws.
  1. 1

    The floor and the threshold

    The concrete under the door is half of the seal. The technician looks at the slope of the driveway toward the opening, the condition of the slab edge where the seal lands, cracks, spalled patches and any step between the slab and the apron. A garage floor that has heaved or settled over the decades is common, and the shape it has taken decides whether a standard seal, a taller bulb profile or a threshold seal glued to the floor gives the most even contact. Where water arrives from outside, the path it takes is noted so the seal and any threshold are placed to meet it.

  2. 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. 3

    Fewer visitors of the four-legged kind

    A continuous seal removes the easy route mice and insects used along the floor. If rodents were part of the reason for the visit, a few habits finish the job: keep birdseed, pet food and grass seed in lidded bins, move firewood and cardboard away from the walls, and check the jamb seals at floor level, where a gap beside the door is as inviting as one under it. Seals with a stainless mesh embedded in the vinyl are available for garages that have had repeated trouble. A sealed bottom edge plus tidy corners keeps the garage a place where nothing wants to nest.

In the van

  • Bulb or U-style bottom seal
  • Straightedge and tape measure
  • Aluminum bottom seal retainer
  • Bead-style bottom seal
  • Track clamps

What affects the quote

  1. 1

    Door out of level

    If one corner of the door hangs low because of cable or spring tension, levelling the door is separate work done before the seal goes in and is priced on its own.

  2. 2

    Bottom section repairs

    A rusted, dented or bowed steel bottom rail, or a rotted wood rail, is pointed out and any repair or reinforcement offered as an option beside the seal work.

  3. 3

    Access and clearance

    Storage, a vehicle that must stay inside, or shelving against the bottom of the door slows the work. A clear metre inside the door makes the visit shorter.

Same fees day, night or weekend.

Have it ready

Before you call · 0 / 3

(289) 278-1736

Garage Door Bottom Seal Replacement: questions

Advice · (289) 278-1736

Why is the gap much bigger at one corner?

Two causes are common. The door may be hanging out of level because a lift cable has stretched, a drum has crept on its shaft or spring tension is uneven, which drops one corner. Or the slab may have settled or heaved at that end so the floor falls away. The technician checks both before choosing a seal, since a level door and the right seal height together close a wedge-shaped gap.

How do I know which size and type my door takes?

Look at the end of the bottom section for the metal or plastic strip that holds the seal. Count the channels, note whether they are slotted or rounded, and measure the distance between them and the width of the door. A photo of the end of the retainer and one of the seal's cross-section is usually enough for the technician to identify the profile before the visit and bring the right roll.

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.

Garage Door Bottom Seal Replacement near you

Durham, Ontario

Whitby information

Town
Whitby, Durham, Ontario
In business
30 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

25%

Newer homes. About 25% of homes in Whitby were built in 1980 or earlier, according to the 2021 Census.

Where homes are newer, the garage is usually attached and often has living space over it, so the door forms part of the insulated envelope. Insulated panels, tight perimeter weatherstrip and a good bottom seal make a real difference to the comfort of the room above.

70%

Mostly houses. Single-detached houses make up about 70% of homes in Whitby (2021 Census).

Detached houses commonly have attached two-car garages with a wide double door, which is a heavy door on a pair of torsion springs. Spring and cable work on these doors is done as a matched set so the door lifts level and the opener carries only its intended load.

Source: Statistics Canada, 2021 Census of Population

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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.

Call now · open 24/7(289) 278-1736
  • On-site assessment preferred
  • Same fees day, night or weekend
  • 30 years in business