What kind of drainage to green roofs need?

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  1. 0 Votes

    There is an online course that is free, which has information regarding drainage for green roofs that is very useful. The link to the course is below.

    http://www.aecdaily.com/course.php?node_id=1607002&tabidx=viewcoursedetails&company=American+Hydrotech%2C+Inc.

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