How Much Uplift?
In answer to the question, how much uplift force can a green roof tolerate, there is no simple answer, at least today there isn’t. Available information is mostly anecdotal and research is slow coming. And, because the weight, vegetation, and porosity of green roof systems is variable, and the particular components in which they interface (edging, pavers, parapets, etc.) are diverse, there has been little testing and there is no generally accepted standard or code.
