Pegged Bladed Scarf Joint

bladed scarf joint

This bladed scarf joint uses pegs to secure the two timbers together. Commonly utilized for either a sill plate or roof plate, if you add some all-thread steel rods or structural screws, it could be used in areas with light sustained tension.
This joint is a half-lap joint with the addition of the tongues or blades. You can use a chain mortiser to cut out for the blades making this a relatively straightforward process of cutting it.

bladed scarf joint

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8 thoughts on “Pegged Bladed Scarf Joint”

  1. Jim@TheTradesmanChannel 2017

    Does this scarf perform well when used for a top plate that has a decent amount of rafter thrust?

  2. I used this joint recently on the top beam of a long wall. (I used 8 pegs, though, not 4) It was so strong that I could lift one end of the beam (28 ft) and there was no visible flex at all at the joint.

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