Part 1 General
.1 ASTM C 91: Specification for Masonry Cement.
.2 ASTM C 150: Specification for Portland Cement.
.3 ASTM C 207: Specification for hydrated lime for
.4 ASTM C 270: Specification for Mortar for Unit
1.2 Quality Assurance
.1 Applicator: Company experienced in installation of
manufactured stone veneers of the type specified, with three years experience.
1.3 Project Conditions
.1 Maintain materials and
surrounding air temperatures to minimum 40 degrees F prior to, during, and for
48 hours after completion of work.
.2 Protect materials from
rain, moisture and freezing temperatures prior to, during and for 48 hours
after completion of work.
.3 Allow no construction
activity on opposite side of wall during installation and for 48 hours after
completion of work.
.1 See attached limited
Part 2 Products
Portland Cement, ASTM C 150, type I for masonry cement type N; ASTM C 91.
.2 Masonry sealer: non-film
.4 Metal Lath: 18 gauge galvanized woven wire mesh.
Part 3 Execution
.1 Open Stud: Install
paperbacked metal lath to studs using galvanized nails or staples which
penetrate a minimum of 1" and 4" on center. Apply 3/8" to
½" scratch coat and allow to dry for 48 hours. Wrap weather resistant barrier and metal lath a minimum of
16" around all outside and inside corners.
.2 Sheathed Surfaces:
Install one layer of weather resistant barrier with lap joints 4 inch shingle
fashion. Apply code approved metal
lath, attach with galvanized nails or staples which penetrate a minimum of
1". Apply 6 inches on center vertically
and 6 inches on centers horizontally.
Wrap weather resistant barrier and metal lath a minimum of 16" around
all outside and inside corners.
.3 Concrete and Masonry
Surfaces, New, Clean and Untreated.
Examine newly poured concrete closely to ensure that its finished
surface contains no releasing agents.
If it does contain form oil or release agents, etch surface with a
muriatic acid, rinse and or score with a wire brush, or use high pressure water
or sandblasting to remove.
.4 Existing Concrete and
Masonry Surfaces: If required remove paint, coatings, sealers, dirt.
3.1 Mortar Mixing
.1 Thoroughly mix mortar ingredients in quantities needed
for immediate use in accordance with ASTM C 270, Type N.
.2 do not use anti-freeze
compounds to lower the freezing point of mortar.
.1 Apply 3/8" to ½"
of mortar to (lath) (dampened masonry, stucco, or concrete surface), covering
roughly 10 square feet at one time.
Butter the back of each stone unit completely with mortar, then press
the units firmly into position in soft mortar bed. Wiggle and apply slight pressure to unit to ensure firm
bonding causing mortar to extrude slightly around the edges of the units. Place units with uniform mortar joints. Stone joints should not be over 1/2'"
inch in width. Remove excess
mortar, do not allow mortar to set up on face of units. Rake and tool joint before mortar has
set. Clean and finish joints.