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Slate Roof Central Message Board » Ice and Water Membrane, Plywood, and other Controversies » EPDM and concrete ballasts « Previous Next »

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Username: Ob1foshob

Post Number: 1
Registered: 05-2007
Posted on Thursday, May 10, 2007 - 11:01 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Is it a common practice to use poured concrete as a ballast over an EPDM membrane (on a plaza deck)? I'm seeing problems manifesting where the concrete is affecting the scuppers traveling through parapet walls, thus creating a swimming pool effect on some plaza decks. Is it just crappy workmanship, or a problem inherent to the system?

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