1/2 to 1
Type III
1 to 1-1/2
Type III, Type IV in hot
climate
In locations where ambient temperature frequently
exceeds 38 degrees C (100 degrees F) and roof slope
is 1/2 inch per foot or greater, specify Type IV
asphalt.
**************************************************************************
ASTM D 312, Type [II] [or] [III] [or] [IV], in accordance with membrane
manufacturer requirements and compatible with the slope conditions of the
installation.
2.5
SURFACING MATERIAL
[2.5.1
Aggregate for Surfacing Built-up Roofing
Water-worn gravel, crushed stone, or crushed slag, conforming to ASTM D 1863,
or marble, expanded slag, or expanded shale, conforming to ASTM D 1863
except density not less than 880 kg/cubic meter (55 pcf). Aggregate
conforming to gradation sizes No. 6, No. 7, and No. 67 in conformance with
ASTM D 448 is acceptable provided other requirements of ASTM D 1863 are
met. 2 percent maximum moisture content as determined by ASTM D 1864.
Aggregate shall be light colored and opaque. Limestone, volcanic rock,
crushed shells, and cinders are prohibited.
][2.5.2
Granule Surface Modified Bitumen Cap Sheet
**************************************************************************
NOTE: Specify ASTM D 6163, fiberglass reinforced
cap sheet, as a standard cap sheet. Also may
include the alternate for ASTM D 6162 cap sheet,
combination fiberglass and polyester. For high
puncture resistance and for high traffic roofs,
specify ASTM D 6164 only (polyester reinforced cap
sheet).
**************************************************************************
[ASTM D 6163][ or ASTM D 6162][ASTM D 6164]; Type II, Grade G, minimum 3 mm
(120 mils) thick at selvage edge, and as required to provide specified fire
safety rating.
]2.6
PRIMER
ASTM D 41 for asphalt roofing systems and as approved by the membrane
manufacturer.
2.7
ASPHALT ROOF CEMENT
ASTM D 4586 for use with asphalt roofing systems, Type II for vertical
surfaces and built-up bituminous flashings; Type I for horizontal surfaces
and as recommended by the membrane manufacturer.
2.8
CANT STRIPS
**************************************************************************
NOTE: Use wood cant in non-supported flashing and
wood blocking details (i.e., expansion joints, area
SECTION 07511
Page 15
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