A ridge vent is a vent that runs along the peak, or ridge, of a roof and lets hot, humid air escape from the attic. Paired with intake vents low on the roof, it creates a steady flow of air that keeps the attic cooler and drier. Proper ridge ventilation protects the roof from heat and moisture damage, helps shingles last their full life, and can lower cooling costs during hot summers.
An attic needs to breathe. Without ventilation, summer heat builds up under the roof and bakes the shingles from below, while in cooler months moisture from inside the home rises, condenses on the cold underside of the deck, and can lead to mold and rot. A ridge vent is the exhaust half of the solution, letting that trapped hot, moist air rise out at the very top of the roof.
Ventilation only works as a system. Cool air enters through intake vents low on the roof, usually in the soffits, and warm air exits through the ridge vent at the peak. This natural flow, driven by the simple fact that hot air rises, keeps a gentle current moving through the attic all day. If a roof has a ridge vent but no intake, or intake but no exhaust, the system is starved and the attic stays hot and stagnant.
For a homeowner, ridge ventilation is one of the cheapest ways to protect an expensive roof. An attic that runs cooler and drier means shingles that do not cook prematurely, a deck that stays sound, and an air conditioner that does not fight a superheated attic all summer. A good inspection always checks whether the ventilation is balanced, not just present.
A free, documented inspection across the Triangle. A real estimator within the hour.