Flat Roof Rafter Detail

That will help you remember certain factors and details to build the best possible flat roof.

Flat roof rafter detail.

A roof dormer may be gabled as in our sketch above or it may be a low slope or flat roof. The flat roof design detail can go up against different style that when nitty gritty right can ooze a cutting edge feel. For concentrated vertical load transfer capacity see 1d. First off the flat roof design detail is an extremely basic direct and utilitarian design every single current trademark.

The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls. 1b apa rim board one. Cold roof insulation between rafters wnapor barrier on warm side below orw sheatiiing roofing roofing 2 x 8 sleepers notched for vent aligned wi rafters flashing over rooang fascia sheatiiing 2 x 4 sleepers aligned w rafters provide. If you build a flat roof try to have it slope in multiple directions to drains or gutters.

Other roof protrustions sothat notiiing obstructs tiieflow ofair from eave to ridge. Such as joist header or rafter. A flat roof has a slope of 1 8 per foot to 2 12. While this article focuses on configurations we also have a very cool set of illustrations showcasing the different parts anatomy of roof trusses.

Definition of hip rafter. In many cases with purchased house plans the details of the roof construction including rafter design are included. Having a manual for warm flat roof construction with details and a summary of rules to follow helps. Recommended construction details for performance rated i joists in floor and roof applications.

It is not ideal for snow or heavy rain but modern materials and proper drainage have helped. Yet for historic modern style buildings like this old house s cambridge tv project flat roofs are at the core of the architecture meant to reflect the broad horizontal lines of the natural landscape. Notice that the hip rafter forms what. Think of a flattened hip roof.

A rafter that runs diagonally between the roof ridge and the top of the wall plate forming a hipped roof. Another common design in the northeast is the saltbox which is a gable roof with one longer side. Main features flat roof design detail. Of course you don t need to live in a modern house to deal with a flat roof.

In our rafter type sketch above the hip rafters are drawn in blue. In addition to floor and roof framing details this guide includes recommendations for cantilevers. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof.