How To Build A Flat Roof A Frame

A 2 4 wall with a 2 6 rafter can be notched for a 4 seat.

How to build a flat roof a frame.

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. 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. Use a framing square to help lay out the notch based on the slope of the roof. Add the plywood once you ve added the framing it s time to add a layer of 5 8 inch plywood sheathing.

The flat roof covering can also be epdm. This ethylene propylene diene monomer rubber covering is very versatile long lasting and very strong. This can be done either with many pairs of hands or with the assistance of a crane. The 8 step process for diy installation step 1.

Use ladders or scaffolding if you are building the roof onto a building that is still a frame. Hoist the trusses onto the roof. 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 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. 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.