Hip Roof Framing Basics

$Carpentry Math$

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Hip Roof Framing Basics

Just like any other type of roof, hip roof framing starts by figuring the length and cutting a common rafter. The common rafter will determine the height and length of the ridge board which will establish where the hip rafters are located.

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A simple hip roof slopes down on all four sides, tying the exterior walls together making for a sturdier building than a gable roof. Especially useful in high wind prone areas.

Parts of Hip Roof Framing

Common rafters are used to center the ridge board in the building, set the height, and locate the ends of the ridge. Commons run from the ridge and down to the tops of the exterior walls.

Ridge board is the uppermost part of the hip roof and is used to nail the common and hip rafters in place.

Hip rafters are nailed at a 45 degree angle to the ridge board down to the four outside corners of the building. Also used to nail the top of the jack rafters.

Jack rafters are nailed to the hip and slope down to the exterior walls. They have the same seat and tail cut as a common. The top plumb cut is a special cut called a compound miter.