Garage Doors in PeterboroughOriginal door.
Still worth keeping.

The moving metal-on-metal points get a light coat: the spring coils, the hinge knuckles, the roller bearings and the pins at the bottom brackets. A silicone or lithium product made for doors is used, then the door cycles a few times to carry it in. The tracks are the exception; they are cleaned and left bare, since a slick track lets the wheels skid and holds grit against them.

Small wear items found on the day, such as a roller or a hinge on a middle section, a bottom seal or a few fasteners, can often be replaced during the visit if you agree and the part is on the truck. Larger items, including springs, cables, drums, bottom brackets, a bent track or an opener gear, are written up as separate repairs with their own quote so you can decide with the facts in hand rather than under a raised ladder.

A heavier door needs rollers with a load rating to match, generally ball-bearing rollers rated around seventy-five to one hundred pounds each rather than the light plastic wheels many doors ship with. It often needs long-stem rollers at the double hinges on the end stiles, and the top rollers, which travel furthest under load, deserve the sturdiest in the set. Nylon with ten or more bearings suits most insulated residential doors; very heavy or commercial-weight doors may still call for steel.

The opener is disconnected and the door clamped. The technician identifies the track type and layout, checks each vertical run for plumb, spacing and fixing, looks at the jamb wood, the curve, the flag brackets, the horizontal runs and their hangers, and how each roller sits. Damaged pieces are dressed or replaced, brackets refixed into sound wood, the geometry reset, rollers reseated, springs re-tensioned if they were unloaded, and the door balanced and the opener tested.