Windows 7 64bit
Short description of error
I would like to generate a watertight mesh using the solidify modifier for a surface. The current implementation of solidify modifier does not work around non-manifold edges. Please see the attach figures (I clipped the border with Alt+B in order to see inside) that shows the original surface and solidified mesh. I also attach a blender file in which there are one with just solidify modifier and the other one is with edge split of sharp edge before solidify modifier.
Exact steps for others to reproduce the error