The panels will be about 1⁄4 in (6. 4 mm) smaller than the opening.

Any of the panels can be used as the lower panel. Pick one, but remember that the one with the weather stripping is the one that needs to be placed first.

Shims are small wood strips you can slide under the door panel to even out the sides. Purchase packs at a home improvement store.

Leaving 1 side bare makes fitting and installing the track easier, so do this for every panel.

Remember to leave a little bit of space between the track and door frame.

To find the joists, use a stud finder.

You may instead use tension springs to lift the door. These are cheaper but more prone to breaking. Installation involves running cables over pulleys and through springs hooked to the angle brackets.

Winding the spring too tight can cause it to break, resulting in injury. Make sure you follow the manufacturer’s instructions.

You shouldn’t use WD-40 to lubricate your garage door, as it will attract moisture, which will end up corroding and breaking the mechanisms. [24] X Expert Source Patrick JohnsHome Improvement Specialist Expert Interview. 26 October 2021.

Garage door openers come in several varieties. Chain drives are the cheapest but loudest option. Belt drives are the quietest and most expensive type. Screw drives are in the middle.