Definitions for "Base Ply"
Related Terms:
Base sheet, Shingling, Built-up roofing, Cap sheet, Shingle, Built-up roof, Roof sheathing, Roof covering, Headlap, Selvage, Starter strip, Asphalt shingles, Common rafter, Double coverage, Deck, Fascia, Roll roofing, Soffit, Standing seam, Sarking, Roofer, Base flashing, Ridgepole, Verge, Eave, Eaves, Gravel stop, Barge, Lap, Ridge board, Fascia board, Starter course, Sheathing, Shingles, Flat roof, Jack rafter, Roof assembly, Rafter, Rafters, Barge board, Curb, Ridge cap, Exposure, Verge board, Apron flashing, Step flashing, Hip rafter, Lean-to roof, Raking cornice, Purlins
The primary ply of roofing material in a roof system.
An asphalt saturated or coated roofing felt installed as the first layer in a built up roof.
The bottom or first ply membrane in a built-up roof system.
The bottom or first ply in a roofing membrane when additional plies are to be subsequently installed.
An asphalt-saturated and/or coated felt installed as the first ply with 4 inch laps in a built-up roof system under the following felts which can be installed in a shingle-like fashion.
Initial layer in a multi-layer system of the type of built-up roofing or a first layer of wallboard in a multi-ply construction.
the lower most ply of roofing material in a roof assembly.
the lowermost ply of roofing in a roof membrane or roof system.
the lowermost ply of roofing material in a roof membrane assembly.
the base ply is the first ply when it is a separate ply and not part of a shingled system.