Like many parts of a home’s exterior, soffit serves both an aesthetic and a functional purpose. Functionally, the basic mission of soffit is to protect rafters from the elements. Keeping moisture away from the rafters reduces the chance of mold, and helps preserve the life of the materials.
Depending on the design of your roof system, soffit may serve another important functional role: it’s the key to achieving natural ventilation in the attic.
In modern home construction, attic ventilation is used to improve indoor air quality, increase energy efficiency through natural cooling, and prolong the life of building materials through moisture management.
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