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.

How to build a flat roof a frame. This ethylene propylene diene monomer rubber covering is very versatile long lasting and very strong. This flat roof covering can be roofing felt usually 3 layers with a mineral chipping topping to soak up the heat of the sun which protects the felt from both melting and breakdown under uv rays. Trusses are often spaced 12 16 or 24 inches apart. 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.

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. Step 2 frame the roof photo by russell kaye the most important thing to know about a flat roof says tom is that it s not flat. Use ladders or scaffolding if you are building the roof onto a building that is still a frame. A 2 4 wall with a 2 6 rafter can be notched for a 4 seat.

The flat roof covering can also be epdm. Use a framing square to help lay out the notch based on the slope of the roof. This can be done either with many pairs of hands or with the assistance of a crane. Hoist the trusses onto the roof.

Frame the roof one important and perhaps not so obvious fact is that a flat roof is not actually flat. There are two main types of flat roof systems to choose from.