Roof Components
What Is a Roof Soffit?  A soffit is another important component of a roof.
A soffit is the horizontal underside of a roof overhang, an archway, a staircase, a ceiling, or a similar architectural component.
From the Italian “soffitta” for under and “figgere,” to fix, the word “soffit” dates back to the days of early Palladian [...]

Roof Components
Roof Flashing is another component of a roof.
Some parts of roofs and exterior walls are particularly prone to leaks and water damage. These include roof valleys, the intersection between a dormer wall and the roof surface, and chimney and skylight perimeters—nearly anywhere, runoff is heavy or where two different opposing surfaces meet.  These [...]

Roof Components
The roof deck is made up of sheathing and, in most cases, underlayment that is called roofing felt.  The type of deck used depends on the finished roof material.   Most call for solid plywood or oriented strand board (OSB) panel sheathing; wood shingles and some tile or metal roofs call for spaced board [...]