Flat Roof Rafter Detail

Main features flat roof design detail.

Flat roof rafter detail.

Definition of hip rafter. In many cases with purchased house plans the details of the roof construction including rafter design are included. Other roof protrustions sothat notiiing obstructs tiieflow ofair from eave to ridge. I joist construction details.

The flat roof design detail can go up against different style that when nitty gritty right can ooze a cutting edge feel. Having a manual for warm flat roof construction with details and a summary of rules to follow helps. Think of a flattened hip roof. While this article focuses on configurations we also have a very cool set of illustrations showcasing the different parts anatomy of roof trusses.

A rafter that runs diagonally between the roof ridge and the top of the wall plate forming a hipped roof. Recommended construction details for performance rated i joists in floor and roof applications. 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. The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls.

Another common design in the northeast is the saltbox which is a gable roof with one longer side. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. A roof dormer may be gabled as in our sketch above or it may be a low slope or flat roof. In addition to floor and roof framing details this guide includes recommendations for cantilevers.

First off the flat roof design detail is an extremely basic direct and utilitarian design every single current trademark. 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.

In our rafter type sketch above the hip rafters are drawn in blue. That will help you remember certain factors and details to build the best possible flat roof. 1b apa rim board one. A flat roof has a slope of 1 8 per foot to 2 12.

These days cut ups or roofs with a lot of valleys dormers and other features are increasingly popular. Of course you don t need to live in a modern house to deal with a flat roof. For concentrated vertical load transfer capacity see 1d.