I have a lean-to which I want to re-roof. The exterior wall is not
parallel to the house wall which means that either the abutment or the
eves must slope if the roof is to be monopitch. It is narrow (about
0.7-1.4m) and about 4m long. No gutter is needed.

The convention seems to be that the slope is taken at the abutment
with the eves kept horizontal. However, it would help with the
headroom to be able to slope the eves and have the abutment
horizontal.

As I will have no gutter could I slope the eves or is there a good
reason not to? one thought is that the rafters will not be
perpendicular to the (sloping) wall plate at the eves if i do this.

many thanks for any comments,

Robert



..