Then use the circular saw to cut a 1 by 3 5 inches 2 5 cm 8 9 cm notch 10 25 inches 26 0 cm from the top of each rafter.
How far apart are roof joists on 10x10 lean to.
A lean to roof also known as a shed roof is the simplest roofing design and the simplest to build because the roofing material usually covers only a single rectangular plane.
In other words you would space a roof joist 15 inches apart from another roof joist but never 17 inches apart.
Frame the top side wall of the lean to roof with 2x4 lumber.
Measure from the ends.
430 cm long in order to cover the sloping roof and hang off of the far side.
A roof joist is always spaced no more than 16 inches apart from another roof joist.
Rafter and roof joist spacing is only one part of a complex roof design that works together to form a structure that meets building codes and can hold up the weight of the roof and roof load.
Cut the joists to the intended width of your shed.
But they do tend to space rafters in one of several industry standard increments.