Posted by Matt [24.108.24.130] on Wednesday, November 24, 2010 at 16:48:01 :
In Reply to: Thanks for the input posted by clueless [201.202.29.210] on Wednesday, November 24, 2010 at 09:24:23 :
No slope is not great,but what I would recommend is an asphalt modified urethane(liquid membrane ,no seams).We use alot of it out here on the "wet coast".Then a layer of protection , a couple or more inches of drainage area(drain rock),filter cloth and then your soil.This will obviously add weight so check your structure.