Constructions Standards Checklists

SIDING – CEMENTITIOUS

WALL CLADDING  A. 1 ¼" starter strip installed under the frst plank to ensure a consistent plank angle.  B. 2" clearance above slabs, paths, steps, and decks, 6" clearance above fnish grade, and 1" above roof intersections.  C. Z-Flashing installed at all horizontal transitions at dissimilar materials and sloped to the exterior. Flashing to be integrated behind or sealed to the water-resistive barrier (WRB) with flashing tape. Minimum 1/4" gap between flashing and siding, not sealed.  D. Spacing and treatment at jamb and sill transitions in accordance with fenestration manufacturer requirements.

 E. All trim installed prior to feld planks in “butt to” method.  F. Fasteners installed between 3/4" and 1" from top of plank.  G. Fastener type, size and frequency to be used and nailed at stud locations per manufacturer installation instructions.  H. Planks attached to studs using blind nailing method and correct fasteners per manufacturer installation requirements.  I. Planks and trim installed level and plumb with all butt joints aligned.  J. Minimum 6" wide flashing tab installed behind butt joints and extends over the plank below per manufacturer installation instructions or joint covers installed.  K. Cut edges of planks and trim are primed or protected with sealant.  L. 1/8" gap maintained at vertical intersections of planks and trim with sealant applied.  M. Butt joints in successive courses are spaced minimum 32" apart, randomly dispersed and placed over a stud.  N. Planks saddled over openings.  O. Mounting blocks installed at through-wall penetrations over 1 ½" with drip caps and sealant applied on sides and bottom edge. Drip caps are turned up or down at the ends.  P. Joints in vertical trim pieces are weather cut at a 22.5 degree angle with top piece overlapping bottom shingle style. Weather cuts are minimum 12" apart from adjacent boards.

CONSTRUCTION STANDARDS CHECKLISTS | Wall Cladding | 63