3.4.2
Polyethylene Vapor Retarder
The polyethylene vapor retarder membrane shall be installed over the entire
surface. A fully compatible polyethylene tape shall be used to seal the
edges of the sheets to provide a vapor tight membrane. Sheet edges shall
be lapped not less than 150 mm 6 inches. Sufficient material shall be
provided to avoid inducing stresses in the sheets due to stretching or
binding. All tears or punctures that are visible in the finished surface
at any time during the construction process shall be sealed with
polyethylene tape.
3.5
SLIP SHEET INSTALLATION
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NOTE: Delete this paragraph if no blanket
insulation facing will be compressed against metal
roofing.
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A slip sheet shall be laid over the blanket insulation facing to prevent
the vinyl facing from adhering to the metal roofing.
3.6
CLEANING AND TOUCH-UP
Exposed SSSMR systems shall be cleaned at completion of installation.
Debris that could cause discoloration and harm to the panels, flashings,
closures and other accessories shall be removed. Grease and oil films,
excess sealants, and handling marks shall be removed and the work shall be
scrubbed clean. Exposed metal surfaces shall be free of dents, creases,
waves, scratch marks, and solder or weld marks. Immediately upon
detection, abraded or corroded spots on shop-painted surfaces shall be wire
brushed and touched up with the same material used for the shop coat.
Factory color finished surfaces shall be touched up with the manufacturer's
recommended touch up paint.
SECTION 07416A
Page 28
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