How To Build A Flat Roof Balcony. Add the plywood once you ve added the framing it s time to add a layer of 5 8 inch plywood sheathing. Step 2 order materials.
How to build a deck on a flat roof. Over the years they are affected by the elements blistering cracking and attracting moss and algae. Step 5 add handrails.
Step 2 order materials.
Then run joists connecting the front of your roof with the rear every two feet along the length of your roof. From there the flat roof system you choose will determine the materials you apply. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. If that is the goal of a flat roof a modified bitumen roof would require an extra build up and product application to create useable deck space.