How To Build A Hip Roof With Different Pitches

How to use the hip roof framing calculator.

How to build a hip roof with different pitches.

Then enter those measurements into an online roofing calculator to determine how long each common rafter will need to be. The sides come together at the top to form a simple ridge. It has a polygon on two sides and a triangle on two sides. But here it will be different since the hip rafter doesn t lie at 45 degrees to the commons.

The pitch of the unequal hip rafter can be expressed in relation to either the main roof or the secondary roof. After a taking some measurements and doing a bit of ciphering we established that the steepest pitch we could use on the porch roof was 4 in 12. The hip roof framing calculator returns the value of the main rafter the side rafter the length of the hip the height of the knee wall and the lengths of the jack rafters. Next once you know the lengths of the rafters cut some wooden planks to size and make birdsmouth cuts in each one so.

A sketchup model helps clarify how various rafters and framing components are assembled in an off angle hip and valley configuration. Select the following information by using the drop downs to enter values in feet and inches. Valleys can allow. In a hip roof with equal pitches the unit run of a hip or valley rafter is 17 inches for every 12 inches of run in the main roof.

The hip roof is the most commonly used roof style in north america after the gabled roof. We wanted to make the porch roof as steep as possible while keeping the peak of the roof below the wall to roof intersection at the top of the shed roof. Use separate hip roofs on homes with different wings. But here it will be different since the hip rafter doesn t lie at 45 degrees to the commons.

Explore framing complexities that result when roofs of two different pitches intersect. For example in an equal hip roof with an 8 12 pitch the pitch of the hip rafter would be 8 17. The line where the two roofs meet is called a valley. To build a hip roof start by measuring the width and height of the building you re putting the roof on.

For example in an equal hip roof with an 8 12 pitch the pitch of the hip rafter would be 8 17. The most common type of a hip roof. A hip roof or a hipped roof is a style of roofing that slopes downwards from all sides to the walls and hence has no vertical sides. Similar to a cross gable roof.

This style of roofing became popular in the united states during the 18 th century in the early georgian period.