How to tarp/ seal flat roof


#1

I have a flat roof that on a garage that is in bad shape. I think the garage is 30 by 50. The plywood is starting to rot away and the main beams are bowed.

I think I’m going to have to build another garage next year but somehow I need to keep the water out from now until then. Any ideas would help. I have attempted to put a tarp on but it really did not work well.

How can I put a tarp on it if it has parapet walls?

There is no wood for me to nail two by fours. There is only concrete from the parapet walls up.


#2

There is no easy way to tarp a flat roof that size. Upload a picture and somebody might have an idea.