Roof Framing Plan For Flat Roof

For an existing addition on a circa 1912 residence in newport ri part i.

Roof framing plan for flat roof. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. 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. From there the flat roof system you choose will determine the materials you apply. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof.

Ridge board ridge beam. The 8 step process for diy installation step 1. Frame the roof one important and perhaps not so obvious fact is that a flat roof is not actually flat. 02 filling the 2x10 rafter bays with a nice blanket of insulation.

A flat roof has a slope of 1 8 per foot to 2 12. It is not ideal for snow or heavy rain but modern materials and proper drainage have helped. Re framing a flat roof in preparation for a new rubber membrane. Ridge beam sits below the rafters.

Ridge board v s beam. Transfers the loadof the roof through the raftersto walls below. Add the plywood once you ve added the framing it s time to add a layer of 5 8 inch plywood sheathing. Part iii you are here 01 thats me hauling the r 38 insulation up the ladder.

Of course you don t need to live in a modern house to deal with a flat roof. Think of a flattened hip roof. 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. And the line length measurement from the roof peak to the building wall is the hypotenuse.

Parts of a roof. The rise or height of the roof at its peak is the altitude of the triangle. One of the most important parts of building a sturdy roof is the initial roof framing plan. If you build a flat roof try to have it slope in multiple directions to drains or gutters.

Roof framing simply describes how a group of rafters and beams are fitted or joined together in order to provide support for the roof covering. A ridge board is a horizontal member of the roof frame. Roof framing plans are usually required for complicated residential roof shapes and for most commercial projects. Supported by lally columns.