We are building an extension to our home and the extension has a flat concrete roof. We would like to plant a lawn on this roof. Structurally the roof can handle the weight but now I have a few growing lawn related queries:
- What soil depth should we allow for?
- Are there any specific drainage systems to use?
I've read about specific soils to use and use a shallow rooting grass, however, I'm still not certain on the depth of soil required.