Rafter Scarf Joint

Rafter Scarf Joint

Often in larger structures and barns you may need to split your rafters in two due to the overall length of the building.  To accomplish this and create a strong member you can use a rafter scarf joint; in this case we used an under squinted scarf held  together with long structural screws.  It will need support directly under it or close to it in order to carry the roof loads,  and it will resist any twisting  in the rafter over the years.  

Rafter Scarf Joint
Rafter Scarf Joint
Rafter Scarf Joint

2 thoughts on “Rafter Scarf Joint”

  1. Hello,
    it is mentioned that the rafter may need to be in two pieces.
    Would this be because of not have a timber long enough, thus two pieces are needed? Or could it be a cost factor as well?

    Thank You,
    Charles

    1. It could be for either of those two reasons. This joint was used in a barn where the rafters were 28 feet long. With such a long after it was cheaper to divide it up and use a scarf joint than to buy 30 foot long timbers.

Leave a Comment

Your email address will not be published. Required fields are marked *