2.1.2
Vapor Retarder
Foil-backed gypsum base or gypsum backing board, or 4-mil polyethylene.
2.1.3
Gypsum Backing Board
ASTM C 36/C 36M, ASTM C 442/C 442M or ASTM C 630/C 630M, [Regular]
[Foil-backed] [Water-Resistant] [Type X]. Provide boards with square edges
as the first ply in two-ply application. Provide 1200 mm 48 inches wide
boards, thickness as shown except that board used for liner panels and core
plies of shaftwall construction shall be the size and thickness recommended
by the system manufacturer.
2.1.4
Gypsum Base
ASTM C 588/C 588M, [Regular] [Foil-backed] [Type X], 1200 mm 48 inches
wide, thickness as shown. Provide square edges, rounded, or tapered as
recommended by the veneer plaster manufacturer.
2.1.5
Gypsum Veneer Plaster
ASTM C 587. Minimum compressive strength of finish coat plaster shall be
17 MPa 2500 psi.
2.1.6
Joint Reinforcement
ASTM C 475/C 475M, Mesh reinforcing strip or paper tape as recommended by
the veneer plaster manufacturer.
2.1.7
Joint Compound
ASTM C 475/C 475M.
2.1.8
Screws
ASTM C 1002or ASTM C 954, type appropriate to use.
2.1.9
ASTM C 514, with corrosion-resistant treatment.
2.1.10
Corner Bead, Casing Bead, and Control Joints
ASTM C 1047 [or] [ASTM D 3678], Corrosion protective-coated steel[, vinyl
or clear anodized aluminum] as recommended by the veneer plaster
manufacturer. Provide flanges free of any material that would adversely
affect bonding of the plaster.
PART 3
EXECUTION
3.1
STEEL FRAMING
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NOTE: Since the veneer plaster is a thin, hard
coating, it may be damaged by excessive deflection
or racking of the partition. Partitions should be
isolated from the structural building frame so that
movement of the frame does not distort the
SECTION 09215
Page 8
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