Community College of Allegheny County Pittsburgh, Pennsylvania
2022 Library Roofing Project
D. Clean over spray and spillage from adjacent construction using cleaning agents and procedures recommended by manufacturer of affected construction.
E. Subcontractor shall be responsible for vehicles and other property that is contaminated by cold adhesive over spray or drippage.
3.13
FINAL CLEANING
A. Remove all project related heavy debris and clear drains and scuppers. Ensure that drains and downspouts are clear.
B. Using a 2,500 PSI power washer, with or without a rotating head, wash areas to loosen and remove dirt from the surface of the membrane.
C. If dirt still resides on the surface of the roof, use a mild, biodegradable detergent and scrub pads to further loosen the dirt and lift it from the membrane surface. Ensure that the detergent used complies with local codes and that, if run‐off is prohibited, that the water is captured and properly disposed of.
D. If detergent is used, rinse the surface of the roof to remove residual detergent. Ensure that all runoff has been captured if necessary, in your area.
E. For areas that may still have residual and hard to remove contaminants on the surface, wipe areas with acetone and WHITE RAGS ONLY, then rinse.
END OF SECTION
07540-16 THERMOPLASTIC MEMBRANE ROOFING
February 2022
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