| Term | Definition |
|---|---|
| Back surfacing |
Fine mineral matter applied to the back side of shingles to keep them from sticking. Lon Smith Roofing is a Dallas Roofing Company |
| Base flashing |
That portion of the flashing attached to or resting on the deck to direct the flow of water onto the roof covering. Lon Smith Roofing is a Dallas Roofing Company |
| Battens |
1"x2"x4' wood strips nailed to the roof, upon which the field tile hangs. Lon Smith Roofing is a Dallas Roofing Company |
| Bird stop |
In addition to preventing birds from nesting in the hollows of the tile, this length of formed metal or foam elevates the first course of tile so that it is positioned at the same angle as subsequent courses. Lon Smith Roofing is a Dallas Roofing Company |
| Blisters |
Bubbles that may appear on the surface of asphalt roofing after installation. Lon Smith Roofing is a Dallas Roofing Company |
| Built-up roof |
An outer covering of a comparatively flat roof, consisting of several layers of saturated felt. As laid, each layer is mopped with hot tar or asphalt. The top layer is finished with a mineral or rock covering and a special coating. Lon Smith Roofing is a Dallas Roofing Company |
| Bundle |
A package of shingles. There are 3, 4 or 5 bundles per square. Lon Smith Roofing is a Dallas Roofing Company |
| Butt edge |
The lower edge of the shingle tabs. Lon Smith Roofing is a Dallas Roofing Company |
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