While often overlooked, your roof ventilation system is the frontline defense for your home’s structural integrity and indoor air quality. Its primary job is to continuously channel stale, hot, and moisture-laden air out of your attic space while drawing in cool, dry air from the outside. When ventilation systems are blocked, damaged, or improperly balanced, heat and moisture build up directly beneath your roof. In cold weather, this trapped moisture condenses against your roof deck, leading to timber rot, ruined insulation, and toxic mold growth. In the summer, extreme heat transfers down into your living spaces, skyrocketing your energy bills and baking your shingles from the inside out. Keeping your ventilation in peak condition ensures your home breathes effectively, preserving the lifespan of your roof and keeping the internal environment healthy, dry, and secure.