Term | Definition |
---|---|
Deck or Decking |
The structural "skin" of a roof over which roofing in applied. Most new homes have decking made of plywood. There are four main types of decking commonly used on residential roofing projects:
|
Dimensional shingle |
a shingle that is textured, overlayed, or laminated and designed to produce a three-dimensional effect. Similar to Laminated shingle and Architectural shingle. |
Dormer |
A framed window unit that projects through the sloping plane of a roof. |
Double coverage |
Application of asphalt roofing such that the lapped portion is at least two inches wider than the exposed portion, resulting in two layers of roofing material over the deck. |
Downspout |
A pipe for draining water from roof gutters. A downspout is also called a leader. |
Drip edge |
A non-corrosive, non-staining material used along the eaves and rakes to allow water run-off to drip clear of underlying construction. |
Dutch lap method |
a shingle that is textured, overlayed, or laminated and designed to produce a three-dimensional effect. Similar to Laminated shingle and Architectural shingle. |