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• <br /> KP Roof Repairs and Roof Improvements Project • Section 07500 <br /> Community Transit, ITB#2019-028 Single Ply Membrane <br /> 1.11 PROJECT CONDITIONS <br /> A. Weather: Proceed with the roofing work only when existing and forecasted weather <br /> conditions permit work to be performed in accordance with manufacturer's recommendations <br /> and warranty requirements. Do not apply roofing membrane during inclement weather and <br /> ambient temperatures below 40 degrees F. <br /> S. The Contractor is responsible for maintaining the buildings in a watertight condition. <br /> Coordinate all work to ensure, on a daily basis, that the building, its finishes, and furnishings, <br /> and all new work are protected from damage or moisture and that the roof system remains <br /> watertight. <br /> 1. Do not remove existing roofing from an area larger than can be made watertight by the <br /> end of the working day, including all fiashings and detail work. <br /> 2. Do not assume weighted visqueen sheet or tarps to be watertight. <br /> 3. All seams, including seams of the single ply membrane, shall be cleaned and heat <br /> welded by the end of each working day. <br /> C. All surfaces to receive new infill insulation, coverboard, membrane or flashing shall be dry. <br /> Should surface moisture occur, the Applicator shall provide the necessary equipment to dry <br /> the surface prior to application. <br /> D. The applicator is cautioned that certain single ply roofing membranes are incompatible with <br /> asphalt, coal tar, heavy oils, roofing cements, creosote and some preservative materials. <br /> Such materials shall not remain in contact with single ply membranes. The Applicator shall <br /> consult the manufacturer regarding compatibility, precautions and recommendations. <br /> E. Prior to and during application, all dirt, debris and dust shall be removed from surfaces either <br /> by vacuuming, sweeping, blowing with compressed air and/or similar methods. Provide <br /> necessary protection to prevent debris from entering the interior spaces. The contractor is <br /> responsible for maintaining the building interior in a dust and dirt free condition. <br /> F. The Applicator shall follow all safety regulations as required by WISHA, OSHA and any other <br /> applicable authority having jurisdiction. <br /> G. Flammable adhesives and deck primers shall not be stored and not be used in the <br /> vicinity of open flames, sparks and excessive heat. <br /> H. Applicator shall verify that all roof drain and storm drain lines are functioning correctly <br /> (not clogged or blocked) before starting work. Applicator shall report any such <br /> blockages in writing to the Owner's representative for corrective action prior to <br /> installation of the roof system. If any drains need to be temporarily blocked during <br /> roofing application, the Applicator shall be responsible for providing alternative <br /> drainage, to prevent any overloading of the roof structure. <br /> I. Site cleanup, including both interior and exterior building areas that have been affected by <br /> construction shall be completed to the Owner's satisfaction. All finishes shall be restored to <br /> the pre job condition. <br /> J. Precautions shall be taken when using adhesives at or near rooftop vents or air intakes <br /> where adhesives' odors could enter the building. Coordinate the operation of the vents and <br /> air intakes in such a manner as to avoid the intake of adhesive and other odors while <br /> ventilating the building. Keep lids on unused cans at all times. <br /> Construction Documents <br /> 07500-5 <br />