lean-to roof, non-parallel wall, slope eves or abutment?

Jan 04, 2012 1 Replies

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


.

That is a thought. it will have rafters w/ plasterboard under, then18mm plywood above, then 120mm solid insulation above that, then roofing felt on top.

the problem is likely to be that the ceiling plasterboard would also have to curve.

Robert

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