roofing and flashing as specified herein prior to application of permanent
roofing system.]
3.3.1
Phased Membrane Construction
Phased application of membrane plies is prohibited unless otherwise
approved by the Contracting Officer and supported by the membrane
manufacturer's written application instructions. Any delay in cap sheet
installation shall result in thorough cleaning of the applied membrane
material surface and drying immediately prior to cap sheet installation.
Priming of the applied membrane surface may be required at the discretion
of the Contracting Officer prior to cap sheet installation.
3.3.2
Temporary Roofing and Flashing
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NOTE: Include requirements for temporary roofing
and flashing when construction will require
considerable work on roof, such as, installing
cooling towers, antennas, pipes, ducts, solar
collectors, or other equipment, and temporary
roofing is considered necessary to ensure that
permanent roofing is not damaged during construction.
**************************************************************************
Provide watertight temporary roofing and flashing where considerable work
by other trades, such as installing [cooling towers,] [antennas,] [pipes,]
[ducts,] [_____,] is to be performed on the roof or where construction
scheduling or weather conditions require protection of the building's
interior before permanent roofing system can be installed. Do not install
temporary roofing over permanently installed insulation. Provide rigid
pads for traffic over temporary roofing.
[3.3.2.1
Removal
Completely remove temporary roofing and flashing before continuing with
application of the permanent roofing system.
]3.3.3
Application Method
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NOTE: Specify the applicable application method(s)
and distinguish any varying requirements or options
related to membrane and base flashing (e.g., in
general manufacturer may allow base flashing
membrane to be torched or set in cold adhesive on
hot mopped roof membrane installations; however,
this may or may not be desirable for a specific
project installation.).
**************************************************************************
[3.3.3.1
Hot Asphalt Application of Modified Bitumen Membrane
**************************************************************************
NOTE: Include paragraph when hot-mopped membranes
are used or base sheets are hot-mopped to
non-nailable substrates.
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SECTION 07550
Page 27
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