Sloped Roof Framing Detail

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Sloped roof framing detail. While most home builders will outsource the construction of roofing trusses the rafter supports of the roof itself learning to frame a roof yourself is one of the true arts of carpentry and a basic primer is covered below. Continuous insulation on top of the deck. Per foot this is called a 5 12 slope and extended 18 in. Rafters act more like the top chord of a roof truss than as a roof joist.

The rafters carry the applied loads to the exterior walls. Think of a flattened hip roof. The run or half the building span is the base of the triangle. And the line length measurement from the roof peak to the building wall is the hypotenuse.

Your roof may vary from this and the details of how the porch ties in will vary as well. Select an angle of slope away from a house into an area with good drainage and complementary to an existing house or other building. The roof is held up by walls or posts where one wall or the posts on one side are at a higher level than those on the opposite side. à highlight detailing best practices for vented low slope roofs to avoid moisture traps and ensure material longevity.

The house roof sloped 5 in. 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. Make a rafter cutting jig by measuring 12 in.

The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. The shed roof or lean to is a roof having only one slope or pitch. The function of each component is. Step 1 use prefabricated mono trusses for the easiest and best framing on a single slope roof.

It is not ideal for snow or heavy rain but modern materials and proper drainage have helped. Framing a roof is the last step in framing new construction. Needed to tie the roof together where the rafters are framed at an angle to each other. Measure the outline of the structure to be roofed with a tape measure or get dimensions from a house plan.

It is used where large buildings are framed under one roof where hasty or temporary construction is needed and where sheds or additions are erected. The rise or height of the roof at its peak is the altitude of the triangle. If the slope of your dormer roof is the same as your old roof hold a scrap of plywood against the old roof boards and draw a level line on it. In a rafter roof all of these components are required to provide a stable roof.

On most two story houses you won t have to worry about tying into the roof but you may have to situate the porch carefully to avoid covering a window.