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. This can be done either with many pairs of hands or with the assistance of a crane. Use a framing square to help lay out the notch based on the slope of 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.

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. 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. The flat roof covering can also be epdm. 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. Use ladders or scaffolding if you are building the roof onto a building that is still a frame. Hoist the trusses onto the roof. This approach uses insulation with no air gap either immediately above or below the roof deck.

Frame the roof one important and perhaps not so obvious fact is that a flat roof is not actually flat. 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.