| Open valley Method of valley construction in which shingles on both
sides of the valley are trimmed along a chalk line snapped on each side of the
valley. Shingles do not extend across the valley. Valley flashing is exposed. | |
|
| Organic felt An asphalt roofing base material manufactured from
cellulose fibers. | |
|
| Oriel A bay window
supported by brackets | |
|
| Oriented Strand Board or
OSB or Chip Board or Wafer Board A
manufactured wood panel made out of 1"- 2" wood chips and glue. Often
used as a substitute for plywood in the exterior wall and roof sheathing. | |
|
| Out building Any small building(s) located on the same property as, but clearly subordinate | |
|
to, the main building.>
| Overhang The portion of the roof structure that extends beyond the
exterior walls of a building offering it protection from the elements. | |
|