Attic ventilation is an important part of every roof installation. The proper method of ensuring air flow in your attic is a ridge venting system. These are structures with molded-in air vents located under the ridge cap shingles. The system provides the desired airflow in the attic while maintaining watertight integrity.
How to do it right: If there isn’t enough airflow in the attic, mold may grow and plywood may delaminate and rot. Box vents can provide attic ventilation, but are prone to leakage and are unsightly. A ridge vent system provides better airflow than box vents and will not leak. It also gives your home a higher profile and a more attractive look.