Pms flat roof

can anyone please explain me what is pms membrane roofing? is it same as EPDM? And how I can be certified applicant of this material. I live in PA.
Thanks

PMS= Protected Membrane System.
Basically a green roof. The new roof (pms) is applied then all the green, drainage, soil, vegetation, etc put on top.

thanks

only happens once a month right ? :roll:

Dont let your wife hear that.