How much fall do you need on a flat roof?
about 1:40
What Pitch is a Flat Roof? If flat roofs are to work well, they have to have a slope, known as a fall, to shed rainwater. The fall should never be less than 1:80 and preferably about 1:40.
How do you fix ponding water on a flat roof?
Quote from the video:
Quote from Youtube video: Like a tile grouting sponge. Or. I'm masonary sponge and we'll just absorb all the standing water that's on there.
How do you install a slight pitch on a flat roof?
Quote from the video:
Quote from Youtube video: I started with the 12 inch base sheet. We're gonna go to a 24 inch sticky ply and then we'll go to a full 36 inch cap sheet the way you stagger all your rows.
