The Importance of Roof Ventilation

Residential roofing contractors like us can never place enough emphasis on proper roofing design. Attic ventilation, in particular, is an important yet often overlooked part of a roofing system. All Angles Covered shares an in-depth look at how important attic ventilation is.

Improper Attic Ventilation

Trapped heat and moisture in the attic can cause issues, which is why continuous air flow is important. Otherwise, one or more of the following could happen:

Insulation Damage — Attic insulation materials, such as batt, foam or loose blown-in fiberglass, form clumps when wet. This creates holes in the insulation layer and allows heat to penetrate the attic during hot days. Trapped heat combined with insufficient insulation is the main cause of ice dam formation in the winter.

Structural Damage — The roof structure, which includes the rafters, trusses and decking, are made of wood. The exposed wood components can absorb excess moisture and accelerate warping. If not addressed, this could lead to crooked and sagging roof lines or even a collapsed roof. Financing roof repair can be difficult under these conditions as the cost would be more or less the same as

Mold and Mildew Growth — A warm, dark and moist attic is the perfect environment for mold and mildew growth. The spores can spread into your indoor living areas and could trigger allergies and other respiratory problems.

Proper Attic Ventilation

For small to average-sized homes, passive ventilation is enough to keep the attic cool and dry. Since heat tends to rise, the roof peak should have vents that are large enough to allow air circulation, but small enough to prevent dirt, debris and small animals from getting inside. The soffit vents should likewise allow sufficient air intake for continuous air flow.

Large roofs may be supplemented by active ventilation. One or more exhaust fans can be installed at or near the roof peak. These fans create air flow by pulling warm air out of the attic. Roof exhaust fans are typically solar-powered and low maintenance, and can be installed on most types of sloped roofing systems.

To learn more about our services, including roof repair with warranties, call All Angles Covered today at (303) 857-5925. You can also fill out our contact form to schedule a free in-home inspection. Ask us about our roof repair and installation financing options.