Passive roof vents encourage natural air flow and work without the aid of motorized fans. Roof vents enhance the overall comfort of the house by providing escape hatches for hot, stale, moist air, which can reach temperatures of 150 degrees in summer.
In winter, you need to dump that hot air before it condenses, which can lead to rot and mold. Warm air trapped in the tank during winter also may cause rapid melting of snow, which then refreezes as ice dams
You or a professional roofer should check your roof vents annually.
- Periodically clear vent screens of dirt, leaves, dust, pollen, spider webs, bird nests, and other debris that impedes air flow.
- Repair screen rips or tears and damaged flashing.
- Check for rust or rot around the framing or flashing.
- Clear insulation vent openings. You’ll need to inspect from inside your attic.
If you’re having problems with ice dams, mold, and damaged shingles, have a ventilation or roofing professional evaluate whether you have adequate ventilation and need to retrofit exhaust or intake vents.