Without adequate ventilation, warm air can get trapped in your roof and attic, creating a damp environment that’s the perfect breeding ground for mold and mildew. To keep mold from forming, prevent moisture damage to your roof and ensure air circulates beneath your roof, it’s important to ensure your roofing system has enough air vents and its soffits and fascia boards are well-vented.
What Are the Purpose of Soffits and Fascia Boards
The soffit boards are located under the fascia board (the long straight board that provides support for the gutter system and prevents water from infiltrating your interior). In a sense, the soffit and fascia boards help your roof breathe by allowing fresh, cool air to enter from the bottom part of the roofing system.
How Much Ventilation Does Your Roof Need?
Along with air vents, soffit boards help provide ventilation for your roof. But how much ventilation does your roof need? As a general rule, it should have at least a square foot of attic ventilation for every 300 square feet of attic floor. Keep in mind that more ventilation isn’t necessarily better. That’s because adding too many intake or exhaust air vents can disrupt the airflow in your roof and attic.
Choosing the Right Type of Soffit
In addition to providing ventilation, soffit boards also protect your roofing systems rafters (the wooden beams that form your roof’s support) from rain and the elements. That’s why it’s important to choose a soffit material that’s suited to your area’s climate.
Here’s an overview of the most widely used materials:
- Vinyl – Vinyl soffit boards are the most affordable option on the market. Compared to other more popular soffit materials, they have lower maintenance needs.
- Aluminum – Thanks to their resistance to common roofing issues like rot and other forms of moisture damage, aluminum soffits are highly recommended for homes in rainy areas.
To learn more about your soffit options, consult an experienced roofer.
Pritchett Bros has been serving local residents since 1963. We offer a wide range of professional exterior services, including roofing and remodeling services. To get a free roof inspection, call us at (812) 275-3185, or fill out this form. We serve homeowners in Bloomington, IN, as well as the surrounding communities.