How a Roof Works: Layers, Parts and Water Flow
Framing, deck, underlayment, flashing and covering: how the layers of a roof divide the work of keeping water out, and how rain travels from ridge to gutter.
Plain-English, illustrated guides to roofing materials, flashing, gutters, ventilation and repairs for homeowners.
Framing, deck, underlayment, flashing and covering: how the layers of a roof divide the work of keeping water out, and how rain travels from ridge to gutter.