This video shows how to repair a split rafter.
Hip roof rafter repair.
With the proper tools anyone can do this.
Finally the hip roof may well serve as a mansard at certain angles of inclination of course.
Rafter and joist systems are made up of two pieces of wood that run directly beneath the roofing surface and give it its shape while joists bridge the gap between the two rafter ends and support the whole thing.
A rafter might split when heavier roof tiles are installed or if the rafter has inconsistent grain or excessive knots.
Fixing a rafter requires basic carpentry skills and the ability to work in.