Garage doors, explained.

Plain-English, illustrated guides to garage door problems, springs and cables, openers, doors and seals: how each part works, what usually goes wrong, and when it is time to call a professional.

Illustration of a house with a sectional garage door half open, showing the side tracks, the torsion spring above the door and a ceiling opener

Start with what you need help with

Pick a topic. Every guide starts with the answer and then explains why.

Troubleshooting

Doors that will not open or close, reverse, shake or make noise: how to narrow down the cause safely.

Springs & Cables

How torsion and extension springs and lift cables work, how they fail and why repair is a pro job.

Openers

Chain, belt, screw and wall-mount openers: drive types, horsepower, programming and repair.

Doors

Door types, materials, sizes, insulation, panels and what a replacement costs.

Hardware & Seals

Tracks, rollers, hinges, locks, weather stripping and bottom seals: the parts that keep a door aligned and weathertight.

Maintenance & Safety

Maintenance checklists, lubrication and the safety tests every garage door owner should do.

Start here

The guides we start with for the questions homeowners ask most about their garage doors and openers.

Latest guides

New illustrated guides every weekday.

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