Thanks Sarah,
One other consideration I forgot to mention is that the mortar around the purlin and (crumbling underneath) is lime mortar. Should I fill in with the same?
I have other posts to come - there is an unsupported chimney breast up there that also needs sorting... worryingly that is...
Found a whole bunch of issues in our loft that I need to fix.
One side purlin looks like this:
Obviously done really badly.
Notes:
- purlin is angled into the wall.
- one side has 25mm support on the wall, the back has about 65mm
So obviously not the recommended 150mm into the wall and also...