[hubble]

I am about to add a deck to a third floor roof. My main concern is how to to protect the new rolled roof from the downward pressure of the new deck . I am planning to make deck in modular sections so it can be lifted if needed . Any tips or other cosiderations would be appreciated Thanks Hubble

 

[Scuba_Dave]

Is the roof rated for a deck?
What size joists, or is it steel beams?

 

[hubble]

pressure ttreated deck on flat roof

scuba Dave ,Thanks for your interest. I am on my way to another city to do this deck and will not have any idea of structural support till I get there.At this point I.m Planning to put 12"by 12 " blue stryrofoam squares under same size pressure treated wood one and a half inch thick squares and then sit sleepers on those.Roof is slightly angled roll roofing.