Flat Roof Frame Design

There are several methods and materials for the design of the exterior surface of a warm or cold flat roof.

Flat roof frame design.

Roofs are basically five types. They re simple in form and function and are a good example of the modernist principle of clean lines. From there the flat roof system you choose will determine the materials you apply. On a basic level flat roof construction comes in the form of roofing timbers or joists as they are more commonly known or steels that are laid across two uprights walls in most cases.

Shed gable hip gambrel and mansard. Underneath the basics flat roofs are usually constructed with a ceiling nailed to joists which support a deck usually wood in residential construction a vapor barrier insulation and a roof board. Think of a flattened hip roof. The steels or rsj s rolled steel joists are often built into one or both walls to give added stability to the roof structure.

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. Modern architecture has traditionally been characterized by flat roofs. Hot tar and gravel also known as the built up roof bur this type of flat roof features three or more layers of waterproof material mixed in an alternating fashion with hot tar and a layer of smooth stone like gravel. See more ideas about flat roof steel structure steel house.

It may consist of a flat roof on top but the main design element is the multi pitch sloped in what is essentially a hip roof on top of another hip frame. Roof framing is one of those carpenter skills that appears quite complicated and indeed some roof designs are difficult. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. A flat roof has a slope of 1 8 per foot to 2 12.

If you build a flat roof try to have it slope in multiple directions to drains or gutters. Another common design in the northeast is the saltbox which is a gable roof with one longer side. Jun 3 2017 explore anthony valentine s board flat roof on pinterest.