eaves

Eaves are the lower edges of a roof that project beyond the exterior walls of a building. They serve several practical purposes, with the primary function of directing rainwater away from walls and foundations, helping to protect the structural integrity of the building. Eaves also provide shading to reduce heat gain and contribute to the architectural character of a roof line.

The edge of the eave is typically formed by the fascia board, which is fastened to the ends of the rafters or trusses. Beneath the overhang, the underside may be finished with a soffit, which can be vented to allow attic or roof space ventilation. In open-eave construction, the rafters or joists are exposed beneath the roof edge, while closed or boxed eaves conceal the structural members with soffits and trim.

Gutters and downspouts are commonly mounted along the eave line to collect and direct runoff away from the building. The design and placement of eaves, fascia, and soffits influence moisture management, ventilation, and energy efficiency.

Eaves vary by roof style and climate. Open eaves reveal the rafter tails and are often seen in timber-framed, craftsman, or traditional styles, while closed eaves with boxed soffits are common in modern or climate-controlled constructions. Materials for eaves and their trim include wood, metal, vinyl, fiber cement, and composites, chosen for durability, aesthetics, and compatibility with surrounding architecture.

Maintenance considerations include inspecting for water damage, rot, and insect activity in the fascia and soffit, cleaning gutters, and ensuring proper ventilation to prevent condensation andice dam issues in cold climates.