1.4
ENVIRONMENTAL CONDITIONS
1.4.1
Temperature
Maintain a uniform temperature of not less than 10 degrees C 50 degrees F
in the structure for at least 48 hours prior to, during, and following the
application of gypsum board, cementitious backer units, and joint treatment
materials, or the bonding of adhesives.
1.4.2
Exposure to Weather
Protect gypsum board and cementitious backer unit products from direct
exposure to rain, snow, sunlight, and other extreme weather conditions.
1.5
QUALIFICATIONS
Manufacturer shall specialize in manufacturing the types of material
specified and shall have a minimum of [5] [_____] years of documented
successful experience. Installer shall specialize in the type of gypsum
board work required and shall have a minimum of [3] [_____] years of
documented successful experience.
PART 2
PRODUCTS
2.1
MATERIALS
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NOTE: Check ASTM C 840, GA 216 and ANSI A108.11 for
details of materials, fasteners, and application.
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Conform to specifications, standards and requirements specified herein.
Provide gypsum board types, gypsum backing board types, cementitious
backing units, and joint treating materials manufactured from asbestos free
materials only.
2.1.1
Gypsum Board
ASTM C 36/C 36M and ASTM C 1396/C 1396M.
2.1.1.1
Regular
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NOTE: Use tapered and featured edge gypsum board
with embedding and finishing compounds when a very
flat surface is required, such as long walls with
lighting at the end of the wall and down or up
lighted walls.
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1200 mm 48 inches wide, [12.7] [15.9] mm [1/2] [5/8] inch thick,
[tapered][, tapered and featured] edges. [Provide tapered and featured
edge gypsum board [in Rooms _____ ] [as indicated].]
2.1.1.2
Foil-Backed
1200 mm 48 inches wide, [12.7] [15.9] mm [1/2] [5/8] inch thick, [tapered]
[tapered and featured] edges.
SECTION 09250
Page 8
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