Geneerco Institutional Lumber Core Doors
All flush veneered Lumber Core doors shall be GENEERCO Institutional Lumber Core Solid Core doors as manufactured by General Veneer Manufacturing Co.
Face Veneers: Face veneers shall be standard thickness, thoroughly dried, and of the species, cut and grade specified. Faces shall be book matched unless otherwise specified (paint grade excepted), and properly sanded. GENEERCO doors are also available with Medium Density Overlay faces or with High Pressure Laminate faces and vertical edges.
Crossbands: Crossbands shall be thoroughly dried, with a minimum thickness of 1/16, extending the full width of the door, with the grain at right angles to the face veneer.
Core: Cores shall be built of narrow blocks of softwood. The blocks shall not exceed 1 7/8 in width and shall be bonded in a hot press. The core shall be surfaced to a flat, uniform and smooth condition.
Edgebands: The 1 1/2 vertical edgebands shall consist of the exposed stile, which shall be of the same or similar species as the face veneer, glued to the hardwood backing strip, which is bonded to the softwood lumber core. Each exposed stile may contain one fingerjoint unless otherwise specified. The 1 1/2 end rails shall be of softwood unless specified to be of hardwood, and are securely locked in place with a machined joint. End rails on oversize doors will be secured in place with dowels. If top and bottom end rails are not required, specify GENEERCO Tempered Core Lumber Core Solid Core Doors.
Adhesive: Face veneers and crossbands shall be bonded to the core with a Type 1 resin in a hot-platen press.
Note: Underwriters Laboratories labels (20 Minute) are available on doors up to 48 x 108 with wood faces, medium density overlay, 1/8 hardboard, or 1/16 High Pressure Laminate faces.