Rollers and hinges
The loud door. Ten worn steel rollers and a tired hinge set are usually the entire story, and it is the cheapest hour on this whole site.
Of everything on this site, this is the job with the biggest gap between what it costs and how different the door feels afterwards. It is also the one we most often talk people into instead of a new door.
A rumble that travels with the door and is loudest through the ceiling of the room above. A squeal at the bend. A knock each time the door passes a particular point. None of that is the opener, and all of it is fixable in about an hour.
Why nylon is quieter than steel
A roller is a wheel on a stem, and the wheel rides inside a folded steel track. On a builder-grade door that wheel is steel, often on a plain sleeve bearing or a small number of loose ball bearings.
Steel on steel transmits everything. Every seam in the track, every speck of grit, every slight misalignment at the bend arrives in the room as noise, and because the door is a large flat panel bolted to the same structure as your ceiling, the door works as a soundboard for it.
A nylon roller has a sealed ball-bearing race and a plastic wheel. Two things change. The contact between wheel and track is quiet in itself, because the nylon deforms slightly and damps the impact rather than ringing. And a sealed bearing keeps grit out, so the roller keeps rolling instead of gradually seizing and starting to skid.
That last point is the one that matters mechanically rather than acoustically. A seized roller does not roll; it drags. It wears a flat on itself, it scrubs the track, and at the radius bend it is the thing most likely to climb out and take the door off track.
Count the bearings
Nylon rollers are usually sold as 7-ball, 10-ball or 13-ball, which is exactly what it sounds like: the number of ball bearings in the race. More balls spread the load, so the roller runs smoother and lasts longer. On a residential door we fit 13-ball as standard. The difference in price across ten rollers is small and the difference in life is not.
Hinges, and the number stamped on them
Look at the hinges along the middle of your door and you will see a number stamped into the steel: 1, 2, 3 and so on. That number is not decoration. It sets the depth of the roller carrier for that position in the door, so that each section sits at the correct distance from the track as it goes round the bend. A number 2 hinge in a number 3 position will make the door bind, and it is one of the more common mistakes on a door that somebody has repaired quickly.
Hinges fail by elongating. The pin wears the hole into an oval, the section gains a little play, and the door starts to knock as it changes direction. On a door with a worn hinge set, the sections also stop meeting squarely, and you begin to see daylight at the joints from inside.
The end hinges
The hinges at each end of a section carry the roller as well as the joint, so they take both the hinge load and the lift load. They wear first, and a cracked end hinge is a real problem because it lets the roller wander. If one is cracked we will show it to you.
What we do not do
We do not spray the tracks with lubricant. A track is a running surface, not a bearing, and oil in it collects grit and makes an abrasive paste. Rollers, hinges, bearings and the spring coil get a light lubricant; the track gets wiped clean and left dry.
We also will not sell you rollers as a fix for a door that is out of balance. If the door is heavy, that is a spring conversation, and quiet rollers on a heavy door are still a heavy door.
A 13-ball nylon roller and its stem; a hinge with the knuckle and pin between the leaves.
Ten rollers and a hinge set, not a new door
Steel rollers with no bearings, or with the bearings long gone, skid through the radius instead of rolling. That is the rumble. Worn hinges let the sections rack against each other, and that is the rattle.
Both are wear parts and both are cheap. A quiet door for a hundred and forty dollars is a better outcome for you and a worse invoice for us, and it is still the right call.
What it costs
- Attend and diagnose
- $89.00, including the balance test and both safety tests.
- Ten 13-ball nylon rollers fitted
- $130 – $170 including the rollers, on a standard single or double door.
- Full hinge set
- $110 – $180 depending on the number of sections and whether the end hinges go with it.
- Rollers and hinges together
- Done in one visit for one call-out, which is most of why the pair is worth doing at once.
- Bearings and shaft service
- $45 – $80 where the end bearings or the center bearing plate are dry.
Example figures on a demonstration site. They are the shape of real pricing — a call-out plus parts — not a quote from anybody.