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MountNemo Door SpecialistsOpen 24/7 (289) 203-0726
Gloved hands setting a black rubber seal along the base of a white garage door, holding a ribbed strip over paving stones. — Garage Door Bottom Seal Replacement, Waterdown

Repairs · Waterdown

Garage Door Bottom Seal Replacement

The garage doubles as a workshop, and with the heater running the floor near the door stays cold and the draft finds your ankles at the bench. When the wind is up you can feel the air moving under the door.

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?Waterdown

The call
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.

NextHow the visit goes

Garage Door Bottom Seal Replacement · Waterdown

How the visit goes

Four long coiled garage-door springs on a concrete floor, three black with metal end cones and one rusty spring broken in two. — Waterdown
  1. Scene 1

    How the opener meets the floor

    Before the old seal comes off, the technician watches the door close under power. Where the door stops, how firmly it lands, and whether the bottom section flexes as it settles all show how the down limit and force are set. A door that stops short leaves a gap regardless of the seal; one set to press hard flattens a new seal in a season and can bow the section. The current settings are noted so they can be reset once the new, taller strip is in place, and the photo eyes and reversing behaviour are checked at the same time so the finished door is tested against a known starting point.

  2. Scene 2

    Securing the door before work begins

    The opener's release cord is pulled so the motor is out of the picture, and the door is raised by hand to a height where the bottom rail sits at a comfortable working level, usually around chest height. A clamp goes on each vertical track just below a roller so the door cannot drift down while the retainer is exposed. The bottom brackets in each corner stay untouched throughout, because they carry cable tension whenever the springs are wound. With the door held and the floor in front clear, the seal and retainer can be handled like any other piece of hardware.

  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

  • Wire brush and scraper
  • Threshold seal and adhesive
  • Nail-on vinyl strip for wood doors
  • Seal end caps
  • Silicone spray lubricant

What shapes the quoteMount Nemo Door Specialists

Condition of the old seal
A supple strip slides out in a minute. One that has hardened and seized in its channel, or been torn and frozen into the corners, has to come out in pieces, which takes longer.
Door width
A single door takes a shorter length of seal than a double, and the widest doors need more time to feed the strip evenly across. The quote starts from the width measured on the day.
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.

FeesSame any hour

Have it ready

Before you call · 0 / 3

(289) 203-0726

Answers in plain language

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.

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 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.

Waterdowninformation

HamiltonOntario

Town
Waterdown, Hamilton
In business
12 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.

  • 61 in 100 homes · older homes
  • About 61% of homes in Hamilton were built in 1980 or earlier, according to the 2021 Census.Extension springs are common on older doors, and they should carry a safety cable through the middle so a broken spring is held rather than flung. Adding those cables is a small job the technician checks for and offers on any older door he services.
  • Single-detached houses make up about 56% of homes in Hamilton (2021 Census).A blend of housing means a blend of garages: spacious attached garages with full headroom on the detached lots, and tight tandem garages with little side room in the attached units. Openers, tracks and springs are all sized at the door rather than assumed from the street.

Source: Statistics Canada, Census Profile

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On-site assessment

Request a visit.

The garage doubles as a workshop, and with the heater running the floor near the door stays cold and the draft finds your ankles at the bench.

(289) 203-0726, open 24/7.