2.5
ADHESIVE
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NOTE: Tiles larger than 300 x 600 mm (12 x 24
inches) should not be attached by adhesive method.
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Adhesive shall be as recommended by tile manufacturer.
2.6
Acoustical units and suspension system members shall have manufacturer's
standard textures, patterns and finishes as specified. Ceiling suspension
system components shall be treated to inhibit corrosion.
2.7
COLORS AND PATTERNS
Colors and patterns for acoustical units and suspension system components
shall be [as specified in Section 09915 COLOR SCHEDULE] [_____].
2.8
ACOUSTICAL SEALANT
Acoustical sealant shall conform to ASTM C 834, nonstaining.
PART 3
EXECUTION
3.1
INSTALLATION
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NOTE: Adhesive method of application should not be
used for new construction. It may be used for
application to existing ceiling surfaces in remodel
work.
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Examine surfaces to receive directly attached acoustical units for
uneveness, irregularities, and dampness that would affect quality and
execution of the work. Areas where acoustical units will be cemented shall
be free of oils, form residue, or other materials that reduce bonding
capabilities of the adhesive. Interior finish work such as plastering,
concrete, and terrazzo work shall be completed and dry before installation.
Mechanical, electrical, and other work above the ceiling line shall be
completed and approved prior to the start of acoustical ceiling
installation. Acoustical work shall be provided complete with necessary
fastenings, clips, and other accessories required for a complete
installation. Mechanical fastenings shall not be exposed in the finished
work. Hangers shall be laid out for each individual room or space.
Hangers shall be placed to support framing around beams, ducts, columns,
grilles, and other penetrations through ceilings. Main runners and
carrying channels shall be kept clear of abutting walls and partitions. At
least two main runners shall be provided for each ceiling span. Wherever
required to bypass an object with the hanger wires, a subsuspension system
shall be installed, so that all hanger wires will be plumb.
3.1.1
Suspension System
Suspension system shall be installed in accordance with ASTM C 636 and as
specified herein. There shall be no hanger wires or other loads suspended
from underside of steel decking.
SECTION 09510
Page 20
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