| There is are manufactured roofing products available for green roofs. You may want to contact a company like this to help you layout your green roof design. I think most will offer a free layout and design service if you enter a contract to buy their green roof product. You will need to verify that your roof structure can withstand the moist soil load and vegetattion load, most roofs in temperate climates that are designed for snow load have been found to be adequate without adjustments. But it should be verified. I am not endorsing any product, but this one I have seen in person and seems like its straightforward and simple. |
Here is a link that might be useful: green roof
