Garage door inspection after a storm: wind and water damage to check

The wind hit 60 mph overnight and your garage door looks fine from the driveway. It is not fine. Storm damage rarely announces itself. The panel skin still looks straight. The opener still runs. What changed is hidden: a bent track flange, a hairline crack in a hinge, water inside the photo eye housing, a stretched cable that lost three or four strands of its 7×7 construction. Walk the door through a structured inspection before you trust it again. This article gives you that walk-through, in the order a technician would do it.

Southern Utah storms are not Midwest storms. Monsoon downbursts in July and August drop a half-inch of rain in twenty minutes and push wind through Snow Canyon at 70 mph. Dust ahead of the rain packs into every track and roller bearing. A safety inspection after one of these events is not the same as your annual tune-up. You are looking for impact damage and water intrusion, not wear. For more details, see Spring Repair Safety: Complete Guide for Utah Homeowners.

Work from the outside in, top to bottom. Do not operate the door until you complete the visual portion. If something is bent, a power cycle can turn a $200 repair into a $1,400 panel replacement.

Why does storm damage hide so well on a garage door?

A residential garage door is engineered to flex. A 16-foot wide door deflects an inch or more under a strong wind load without showing permanent damage. That flex protects the panels. It also hides the damage that does happen. The skin returns to shape, but the internal strut, the end stiles, or the track brackets may not. See our downloadable garage door inspection checklist.

Wind damage concentrates at three points: the top section where the opener arm attaches, the end stiles where the rollers ride in the track, and the bottom astragal seal where pressure differential tries to lift the door. Water damage concentrates at the bottom seal, the photo eye sensors mounted six inches off the slab, and any electrical connections in the opener head if you have an attached garage with roof leaks above it.

The damage you can see, a dented panel or a torn weatherstrip, is the easy part. The damage that puts the door out of balance or compromises the safety sensors causes the failure two weeks later, when you are not thinking about the storm anymore. That is the failure that drops a 180-pound door on a vehicle or a person.

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What should you check on the exterior of the door first?

Start outside with the door closed. Stand back ten feet and look at the door as a flat plane. Each horizontal section should sit parallel to the one above and below it. If you see a step, a twist, or a section that bows outward more than a quarter inch from its neighbor, a strut is bent or an end stile has pulled away from the panel. That is a service call, not a homeowner repair.

Walk to the door and run your hand across each panel. You are feeling for dents under the paint that the eye misses. Check the bottom seal, the U-shaped vinyl astragal in the retainer at the base of the door. Storm debris tears this seal regularly. A torn seal lets the next storm push water under the door and lifts your monthly cooling bill in summer. Replacement astragal runs $35 to $80 depending on door width.

Look at the trim and stop molding around the door opening. The vinyl or wood stop carries the weatherstrip that seals the sides. Wind-driven rain will have soaked any wood trim. Press a fingernail into it. If it sinks, the wood is going and the screws holding your track brackets nearby are losing their grip.

How do you inspect the tracks, rollers, and hinges?

Go inside the garage. Leave the door closed. The vertical tracks on each side should be plumb and parallel to the door. Sight down them from the floor. A bent track has a kink or a bow. Wind pressure on a closed door pushes the panels outward, which pushes the rollers against the track. A track bracket that loosened in the storm lets the track flare out. The door will still operate, but the rollers will jump out at the worst moment.

Check every hinge, the flat steel plates between sections numbered 1 through 4 depending on door size. Look for cracks at the knuckle where the hinge pivots. Look at the carriage bolts holding the hinge to the section. A hinge that twisted during a wind event will have egg-shaped bolt holes. Wiggle each roller stem in its hinge sleeve. More than an eighth-inch of play means a worn or bent stem.

Inspect the rollers. Nylon rollers with sealed bearings should spin freely and silently when you turn them by hand. Steel rollers should not wobble. Dust from a monsoon downburst packs into unsealed bearings and seizes them within a week of operation. A seized roller drags, scores the track, and forces the opener to work against a load it was not designed to lift.

What about the springs, cables, and drums?

Look up at the torsion spring assembly mounted on the header above the door. Do not touch it. A torsion spring on a standard residential door is wound to a high torque rating, measured in inch-pounds, that counterbalances a door weighing 130 to 350 pounds. If the spring fails, that stored energy releases with extreme and potentially lethal force. Visual inspection only.

You are looking for a gap in the spring coils. A healthy spring has coils touching each other along its full length. A broken spring shows a one to two inch gap somewhere in the middle, or a separation right at the cone. Check both springs if your door has two. Check the cables, the 3/32-inch or 1/8-inch galvanized aircraft cables that run from the bottom bracket up to the cable drum at each end of the spring shaft. Look for frayed strands, kinks, or cables that have jumped off the drum.

A cable that came off the drum during a wind event will let the door drop on one side. The door will sit crooked, the opener will refuse to operate, or worse, it will operate and tear the cable off completely. If you see a cable off its drum, stop. Do not pull the emergency release. Do not run the opener. Call for service.

How do you test the safety sensors after a storm?

The photo eye safety sensors mounted four to six inches off the floor on each side of the door are required on every opener manufactured after 1993 under the UL 325 safety standard. They are also the single most storm-vulnerable component on the system. Water gets into the housing through the wire grommet. Wind knocks them out of alignment. Debris cracks the lens.

Look at both sensors. The LED on each should be lit solid, usually green on one and amber or red on the other depending on brand. A blinking LED means the sensors are out of alignment or the lens is obscured. Wipe both lenses with a dry microfiber cloth. Check that the mounting brackets are tight against the track. A loose bracket lets the sensor droop and break the beam.

Test the auto-reverse function. With the door fully open, place a 2×4 flat on the floor in the center of the opening. Run the door down with the wall button. The door must reverse immediately on contact of contacting the wood, per the UL 325 safety standard in effect since 1993. If it does not reverse, the opener force settings are wrong, the sensors are bad, or the down-limit is set incorrectly. Take the door out of service until it passes this test. For more information, see Your April Spring Tune-Up and Balance Check. For more information, see 24-Point Inspection.

What water damage should you check in the opener and electrical?

If your garage took roof damage, water tracked along the ceiling joists and dripped onto the opener head. Modern openers run a 24-volt DC logic board with minimal weatherproofing. Water on the board causes intermittent failures that get blamed on the remotes or the wall button for weeks before someone figures out the actual cause.

Look at the top of the opener housing. Water stains, rust streaks on the chassis, or mineral deposits on the case all tell you water sat there. Remove the light cover and look inside. A board with corrosion on the terminals or connectors needs replacement, not cleaning. The opener might keep running for months and then fail in the closed position with a vehicle inside.

Check the wiring from the opener down to the wall console and out to the photo eyes. These are low-voltage two-conductor wires usually stapled along the ceiling and down the wall. Look at every staple point. Water that ran down a wire and pooled at a staple corrodes the conductor inside the insulation. You will not see it from outside. You will only see the symptom: sensors that work in dry weather and fail the next time humidity climbs.

When should you call for a professional maintenance check instead of operating the door?

Some findings end the homeowner inspection and start the service call. A broken spring. A cable off the drum. A bent track. A bowed or twisted section. A hinge with cracks at the knuckle. A door that sits crooked in the opening when closed. Any of these means you stop, you do not operate the opener, and you call for a tune-up that includes parts replacement.

A failed auto-reverse test is also a stop-work condition. The UL 325 safety standard, in effect since 1993, requires compliant auto-reverse on every residential opener because the systems before that killed children. If your door will not reverse on a 2×4, it will not reverse on a tricycle or a foot. Disconnect the opener at the wall, pull the emergency release rope to operate the door manually, and schedule service.

For everything else, clean photo eye lenses, a torn bottom seal, dusty rollers, you can handle the maintenance yourself. A full professional safety inspection after a major storm runs $89 to $150 in the St. George area and covers spring tension measurement, cable inspection, hinge and roller replacement recommendations, track alignment, opener force and limit settings, and sensor testing. That is the inspection you want before the next monsoon cell drops out of the canyon.

Frequently Asked Questions About Garage door inspection after a storm: wind and water damage to check

How soon after a storm should I inspect my garage door?

Within 24 hours, before you operate the door if possible. Storm damage hides in components that flex back to position but do not return to spec: bent tracks, stretched cables, loosened brackets. Operating the door with damaged hardware can turn a small repair into a panel replacement or a spring failure. Do the visual inspection first, then test the door.

Can I run my garage door if the photo eye sensors are blinking?

No. Blinking sensor LEDs mean the safety beam is broken, misaligned, or obstructed, which disables the auto-reverse function on the down cycle. The opener may still let you close the door by holding the wall button, but the door will not reverse if something, or someone, is in the path. Realign or clean the sensors before any further operation.

Will my homeowners insurance cover storm damage to my garage door?

Most policies in Utah cover wind and hail damage to garage doors as part of the dwelling coverage, subject to your deductible. Document everything before you start repairs: photos of bent tracks, torn seals, dented panels, and any debris that caused the damage. Get a written inspection report from a licensed garage door company before filing. Coverage details vary, so verify with your specific carrier.

How much does a post-storm garage door tune-up cost in St. George?

A standard safety inspection and tune-up runs $89 to $150 in the St. George area and includes spring tension measurement, hardware tightening, lubrication, sensor testing, and balance check. Parts and repairs are additional: a single torsion spring replacement runs $180 to $350, cables $150 to $220 for the pair, and bottom seal replacement $90 to $160 depending on door width. These are estimates and vary by company.

What does a bent garage door track look like?

Sight down the vertical track from the floor toward the ceiling. A straight track shows a continuous flat line on the inside flange. A bent track shows a kink, a bow, or a flare where the track widens away from the door. You may also see scrape marks on the track surface from a roller that rode the deformed section. Bent tracks cause rollers to jump and require professional replacement, not bending back.

Should I replace or repair a water-damaged garage door opener?

If the logic board shows visible corrosion on the terminals or connectors, replace the unit. A repaired board fails intermittently for months and usually quits in the closed position with a vehicle trapped inside. If the housing got wet but the board stayed dry and the opener operates normally through a full safety test, dry it out and monitor it. Any opener over 12 years old with water exposure should be replaced rather than repaired.