Constructions Standards Checklists

BLACK PAPER – RECESSED WINDOW

DRAINAGE PLANE  A. The recessed opening is entirely wrapped with solid backing.  B. Self-adhered membrane is installed on the potshelf and laps down over the black paper by 2" and up under the sill flashing and minimum 4" on the return walls.  C. A butyl tape sill pan with flexible flashing in the corners, or alternate sill pan detail installed with sealant applied to the back of the window frame. Sealant should create an end dam, extending 6" up each jamb.  D. 9" base flashing installed at jambs against solid backing.  E. For recesses 4" and less, self-adhered flashing membrane installed at top horizontal plane, pressed into corners, is integrated with the black paper above, and overlaps the top flange of the window. For recesses greater than 4", black paper is installed at top horizontal plane.  F. Continuous 3/8" bead of sealant applied to the

head and jambs behind the window nailing fn, in line with any pre-punched holes, at time of installation. Non-continuous sealant at the sill.  G. Flashing tape at jambs extended below the window to the sill and extended to the top of the head flashing.  H. Flashing tape at the head layered over the jamb flashing and extended minimum 1" past the jamb flashing.  I. Flashing tape or pre-fabricated accessories applied in all corners to cover any potential pin holes or voids.

CONSTRUCTION STANDARDS CHECKLISTS | Drainage Plane | 31