jack rafter


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Related to jack rafter: Valley rafter

jack rafter

n
(Building) a short rafter used in a hip roof
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If you're making a jack rafter, you also need to mark the underside of the 2x4 along the hip rafter.
Cut and fit the shorter jack rafter between the ridge board and the roof plates, positioning them every 24 in.
You can use them later for the shorter valley jack rafters (Photo 10).
Metal connectors and solid blocking were also used for jack rafters along hips and valleys, and these areas sometimes called for creative nailing techniques at the inside angles.