How To Build A Flat Roof A Frame

There are two main types of flat roof systems to choose from.

How to build a flat roof a frame.

Add the plywood once you ve added the framing it s time to add a layer of 5 8 inch plywood sheathing. Use a framing square to help lay out the notch based on the slope of the roof. For our 4 x8 lean to example using a 2 4 rafter the depth of the birdsmouth is limited by the 1 3 depth of the rafter rule. Use ladders or scaffolding if you are building the roof onto a building that is still a frame.

The 8 step process for diy installation step 1. The flat roof covering can also be epdm. The reasons for selecting either one will depend on the requirements of the build considering the level of insulation required heat loss and building regulations. Hoist the trusses onto the roof.

This ethylene propylene diene monomer rubber covering is very versatile long lasting and very strong. But the horizontal lines of this 8 by 13 foot flat roof section at the cambridge tv project house make it vulnerable to heavy snow and pooling rainwater which is why it must be built to last. Trusses are often spaced 12 16 or 24 inches apart. A 2 4 wall with a 2 6 rafter can be notched for a 4 seat.

This approach uses insulation with no air gap either immediately above or below the roof deck. This can be done either with many pairs of hands or with the assistance of a crane.