This is a 3 part request.
Part 1 Flat roof is leaking. Requires to be stripped back completely, some work to replace a sheet of ply then reroof area. Size of area is approx 6m x 6m. You can access roof from side of house no probs.
Part 2 - Fit decking to roof. Roof has been decked before it has been stripped off to be replaced. I would require a redeck of the area. Perhaps instead of laying deck on roof is it possible to hang joists and produce a sprung floor for the deck .
Part 3 - Fit balustrade style fence around roof. Currently it had / has fence system around it.
I have identified the material from Wickes for all the above and I have worked out rough costings for material to be £1.5k