New Garage Door Install Day: What Actually Happens

Most homeowners have never watched a garage door installation, and knowing the sequence makes it easier to tell whether the job is being done properly. Here's how it goes.

Before we arrive

Clear the area. We need working room inside the garage, roughly the depth of the door plus space to move, and access along both side walls. Move vehicles out, and shift anything stored against the side walls or hanging from the ceiling near the track path.

Cover what stays. Installation produces dust and metal filings. Anything you can't move that you care about, cover it.

Plan for the driveway. We'll need vehicle access close to the door for the new panels and hardware.

Pets and kids. The door will be open, the garage will be an active work site, and there will be heavy sections and tools around. Best to keep both away for the duration.

Removing the old door

The first thing that happens is releasing the spring tension — safely, with winding bars, before anything else is touched. That's the most hazardous part of the whole job and it's done first while everything is still in a known state.

Then the sections come out from the top down, the track comes off the walls, and the old hardware is removed. The old door and hardware get hauled away.

At this point the opening is bare, and it's the moment to look at the jambs and header for rot or damage. On older East Tennessee garages, finding soft wood at the base of a jamb is common. It needs to be addressed before the new door goes on — putting new hardware into rotted wood is a job that fails.

Installing the new door

Bottom section first, set level, with the bottom brackets and cables attached. Getting this section right matters because everything above it references it.

Sections stack upward, each one hinged to the one below, with rollers going into the track as it goes.

Vertical track goes on as the sections rise, plumbed and secured to the jambs.

Horizontal track and the rear hangers get installed and leveled, tied into the ceiling framing.

The spring system

The torsion shaft, drums and springs get mounted, the cables get wound onto the drums, and the springs get wound to the correct tension for the door's weight.

This is the part that determines whether the door works properly for the next decade. Springs sized and wound correctly mean a balanced door that the opener barely has to work at. Springs that are close-enough mean an opener straining every cycle and a door that drifts or slams.

Opener, if it's part of the job

Rail mounted and leveled, motor unit hung and secured, the door connected via the arm, safety sensors installed and aligned near the floor, wall control wired, and travel limits and force settings programmed.

Final adjustment and testing

This is what separates a finished job from a hung door. Before we leave:

• Balance test — the door is disconnected from the opener and lifted by hand. It should stay put at the halfway point.
• Photo-eye reversal test — the beam is broken while closing and the door must reverse immediately.
• Contact reversal test — the door is closed onto an obstruction and must reverse.
• Travel check — full open and full close, without slamming or short-stopping.
• Seal check — the bottom seal contacts the floor evenly across the width.
• Hardware check — everything torqued properly.

What we go over with you

• How to use the emergency release, and how to re-engage it
• How to program remotes and a keypad
• What the maintenance schedule looks like
• Warranty terms on the door, the opener and the labor
• What to watch for

Ask questions at this point. It's much easier to cover it while we're standing there.

Timing

A straightforward single-door replacement is typically a few hours. Double doors, opener installation, jamb repair, or non-standard track systems extend it. We'll give you a realistic window rather than an optimistic one.

Installing doors across Greeneville, Chuckey and Greene County — call (423) 262-3147 for a free on-site measurement and a flat-rate quote.