How to Repair Sagging Garage Doors

04/07/2016 Back To Blog

Why do garage doors sag? If you haven't bumped into them with the car and nothing other than the ordinary happened, why does it keep "smiling" at you? There are various reasons why doors sag and damage is not always of the same extent either. Wooden doors have the tendency of sagging in the middle but doors can also sag on one side only. It will depend on the cause, the size of the door and the door's type. For example, swing doors usually sag due to loose or damaged hinges. Deep dents at the center of the door happen either when cars fall on doors or during strong storms which find the overhead door unprotected and poorly maintained. Damaged components can also cause the door to sag to one side. Problems vary and along vary their solutions and that's why you need the assistance of Garage Door Repair San Ramon. If you still want to discover what is wrong with the door and how it can be fixed, take a closer look.How to Repair Sagging Garage Doors

What caused the door to sag? Find the reasons first


Naturally, if the damage inflicted by a car or flying debris is huge, it would be best to replace the door. Sometimes, it costs less to replace the existing garage door than trying to repair it. If the problem is fixable, you must find what caused it. Is it the loose hinges? Are the tracks aligned and in good condition? If the vertical track on one side of the door is not aligned, the door might end up being jammed and sagging on one side. To align the track, make sure the bolts and nuts are loosened up so that you can straighten them out and align them in accordance to the curved track before tightening it again. If you notice that the garage door rollers do not move with ease, you might want to loosen up the nuts again and pull the track a bit further from the door.

If the problem is with the hinges and they don't just need tightening, you can replace them easily. If the rollers are rusty or worn, this is a nice opportunity to have them both replaced. You just have to remove the screws securing the hinges against the door and then carefully remove the roller from the tracks. Whether you use a new or the existing roller, it must be inserted in the new hinge, which will be fastened at the exact same position as the old one. If that doesn't fix the problem, take a look at the garage door springs and cables. If they sag or are loose, they will cause the door to sag as well.

Sagging springs need adjustment. The task is a lot harder when there is a torsion spring installed. Garage door torsion spring adjustment is done with winding bars, which are placed on the winding cone of the spring in order to add tension. Once the first winding bar is pushed in and the set screws are loosened up, use the second winding bar to turn the spring once. Then remove the first winding bar and put it in the next hole of the cone in order to remove the spring once more. Turn as many times as it is necessary but remember to tap on the rod gently and with a direction opposite to the center of the door so that the spring won't bind. If the spring is okay, check the cable. If it's off the drum, check if it's broken. If it's in good condition, take the cable and bring it from the back side of the drum, turn it once and then push it into the slot at the drum. Turn the drum till the cable is tightened and don't forget to check the balance of the door. 

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