Dented Garage Door Panel: Repair One Section or Replace the Door?

Sometimes. A shallow, rounded dent in the flat of a panel, with no crease, can often be eased back from the inside on an uninsulated door, and occasionally on an insulated one. The metal rarely comes back perfectly flat, and the paint can craze along the edges of the dent, so it's a cosmetic improvement rather than a repair.

A crease is different. Once the steel skin has folded, it has stretched, and pushing it back leaves a ridge and a weak line that flexes every time the door moves. Manufacturers' own advice is that a creased or deeply dented section is a replacement, not a repair, and that a heavily dented door should be looked at by a dealer before anyone tries to work it back by hand. We'll say honestly whether a push-out is worth trying on yours.

Usually, yes. Sectional doors are built from separate sections joined by hinges, and manufacturers sell individual sections for models still in production. We need the door's make and model, which section it is (top, bottom, or one of the middle ones), the colour, and ideally the serial number, which on Clopay and many other doors from the last ten years or so is printed on a label on the inside of the bottom section.

Two things to know before you decide. A new section comes in the current factory colour, and a door that has faded for eight Winnipeg summers won't match it exactly; on white and light colours the difference is small, on dark colours it shows. And any decorative hardware or windows on that section go with it, so the replacement has to carry the same. Our panel replacement page covers how we confirm a match before ordering.

When the damage is spread out: more than two sections hit usually prices out close to a new door, and you'd still have an old door with a mix of panels. When the bottom section is badly bent, because it carries the bottom seal, the bottom brackets that the lift cables attach to, and often the door's weight when it's down. When the door no longer closes or seals, which points to bent track or hardware on top of the panel. When the model is discontinued and no section exists to order. And when the door is already fifteen or twenty years old and the springs, rollers, and seals are due anyway.

In those cases we quote both ways, side by side, and the decision stays yours. The installation page covers what a new door includes.

The top section takes the pull of the opener arm, and on a dented or weakened top section that pull can finish the job. Manufacturers and the industry body both call for the top section to be reinforced with a strut when a trolley opener is attached, and most warranties require it. If your damaged section is the top one, or the door had no strut to begin with, the replacement should include one.

Also check the door isn't out of balance after a hit. If one lift cable has slackened or the door sits crooked, leave the opener alone until it's looked at. The cable off the drum guide explains why.

Three photos: the dented section straight on, the whole door from inside the garage, and the label on the inside of the bottom section if you can find it. From those we can usually tell you the same day whether it's a push-out, a section, or a door, and what each would involve.