24/7 emergency repair

Garage Door Slams Shut in Boulder, CO

A door that drops fast is dangerous to people and pets. Stop using it and call a pro right away.

Licensed & Insured Same-Day 1-Year Warranty

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A garage door that slams shut in Boulder has lost the spring tension that controls its descent — a serious safety issue we treat as urgent.

Living with Boulder's freezing cold and heavy snow means garage doors work harder here than most people realize. ice freezes doors shut and high-altitude sun cracks seals both feed straight into a garage door slams shut, which is why our Boulder County techs treat the cause, not just the door in front of them.

What might be wrong

Common causes when your garage door slams shut

Here's what our local techs check first — and what each one usually means.

A broken spring

With no counterbalance, the full weight of the door drops fast.

A snapped cable

A failed cable removes the control on one or both sides.

A failed opener or worn pulley

Worn lift hardware can let the door fall.

How we fix it

Fixed fast by a local Boulder pro

We secure the door, replace the spring or cable, and confirm a controlled, balanced close before we leave.

See our Spring Repair & Replacement

Why call a pro?

Garage doors are heavy and spring-loaded. A licensed tech diagnoses the real cause, fixes it safely, and backs it with a 1-year warranty — usually the same day you call.

Our work