How often should you check a ridge vent?
Updated July 2026
Inspect your ridge vent once a year, and again after any major windstorm (roughly 50 mph gusts or higher), the two moments when caps lift, nails back out, and openings get blocked. The ridge vent is the exhaust half of your attic ventilation: hot air escapes at the peak while cool air enters at the soffits. When it is damaged or clogged, attic temperatures climb past 150°F in summer, your shingles cook from below, and cooling bills rise. Most of the check happens from the ground with binoculars.
What changes the interval
| Your situation | Interval | Why |
|---|---|---|
| Annual roof check from the ground | Once a year | Scan for lifted, wavy, or gapped ridge caps with binoculars |
| After a windstorm over 50 mph | Check within days | Wind is the top cause of lifted caps and pulled nails at the ridge |
| Attic feels like an oven in summer | Check now | Trapped heat means the exhaust is blocked or the vent is undersized |
| New roof or newly installed ridge vent | Confirm balanced intake | Ridge exhaust does little without roughly equal soffit intake |
| Frost or damp on attic sheathing in winter | Check for blockage | Blocked exhaust traps humid air, which is how sheathing rots |
| Daylight or wasps visible at the ridge | Inspect and reseal | A gap that passes light also passes wind-driven rain and pests |
The cost of skipping it
What skipping it costs: a blocked or storm-damaged ridge vent turns the attic into a heat trap (150°F+ in summer), and that trapped heat curls and cracks the shingles above it, cutting an asphalt roof's life from a typical 20–30 years toward 12–15. An early reroof runs $8,000–20,000 depending on size and pitch. In winter, blocked exhaust traps moist air that condenses and rots the roof deck. Catching it early is free from the ground; replacing a damaged ridge-vent section costs about $300–650.
How to do it (15–20 minutes · DIY from the ground and attic)
- Stand back on the driveway with binoculars and sight down the ridge line for dips, waves, or lifted caps.
- Look for shingle caps that have slid, curled, or lost the nails that hold them over the vent.
- After a storm, check for torn baffles, debris packed into the vent slot, or a bent metal ridge cap.
- Go into the attic on a sunny day and look along the peak for stray daylight, which means a gap.
- Feel for airflow at the ridge and confirm insulation has not been stuffed up against the soffit intakes below.
- Note any dark staining or frost on the underside of the sheathing, a sign exhaust is not moving.
Knowing the interval is the easy half. OnOtto reminds you at the right interval, and it won't let you snooze it into next year. Tasks persist until they're done, and completing ridge vent checks schedules the next one automatically.
Put this on autopilot, free for 30 daysFrequently asked questions
Do I have to get on the roof to check a ridge vent?
No, and you should not for a routine check. Most problems (lifted caps, storm debris, a sagging line) are visible from the ground with binoculars, and the rest show up from inside the attic as stray daylight or poor airflow. Save the ladder for a roofer. If the ground and attic views both look off, that is your cue to call a pro who can walk it safely and check the fasteners.
How do I know my ridge vent is actually doing its job?
The attic is the tell. A working system keeps the attic within about 10–20°F of the outside air; if it feels dramatically hotter than outside on a summer day, exhaust or intake is failing. The other half is balance: a ridge vent needs roughly equal net free area at the soffits to pull air through. All exhaust and no intake, or blocked soffits, starves the ridge vent no matter how clean it is.
Ridge vent or box and static vents, which is better?
A continuous ridge vent usually wins because it exhausts along the entire peak, the highest and hottest line, and looks nearly invisible. Box, turbine, and gable vents work but cover less area and can short-circuit a ridge vent if mixed on the same roof. Whatever the type, the rule holds: exhaust up top must be matched by intake at the soffits, or hot air just sits in the attic.
Can a ridge vent leak?
Yes, and it is usually installation or storm damage rather than the design. Common causes are nails that missed the framing, a cut opening wider than the vent's baffle, missing end caps, or caps lifted by wind that let wind-driven rain under them. If you see water stains along the peak inside the attic, check the ridge from the ground and treat it like flashing: reseal, refasten, or replace the damaged run before the deck below it rots.