How To Build A Flat Roof A Frame

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.

How to build a flat roof a frame.

This ethylene propylene diene monomer rubber covering is very versatile long lasting and very strong. Hoist the trusses onto the roof. This approach uses insulation with no air gap either immediately above or below the roof deck. Add the plywood once you ve added the framing it s time to add a layer of 5 8 inch plywood sheathing.

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. The 8 step process for diy installation step 1. The flat roof covering can also be epdm. Frame the roof one important and perhaps not so obvious fact is that a flat roof is not actually flat.

Trusses are often spaced 12 16 or 24 inches apart. Use a framing square to help lay out the notch based on the slope of the roof. There are two main types of flat roof systems to choose from. 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.

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. 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.