Kill your bathroom

Thursday was more demo on the bathroom. Took the old gib board off the walls and opened up the underlying tongue+groove walls a bit. Found some borer in one stud (it morphed into an impressive pile of dust when I beat on it) and some dry rot in one corner of the room, cleaned that out, opening a bolt hole into the toilet next door.

Removed the ceiling (painted) hardboard and found a nice crop of grey-green mould growing on its back side (so chucked that out in the sun). Opened out the roof lining (tongue + groove again) above the hardboard to let air through and then had to remove about an inch (100 years) of accumulated dirt/dust/dead insects and stuff that was sitting on the top of the ceiling lining.
One of the work gang (Bob) came over to help out for a bit so found out all about him in between hammering walls.

The wet area under the Batts I removed yesterday has dried right out, the gaps in the bathroom ceiling should help with that for any bits I cant see.

I've been hopping in and outside the house periodically to check where the sun is and what roof facings are fully exposed to it. I've got a good idea on where the Solar panels should go now..

Solar heating investigation continuing - there'll be a writeup of that once I
get my thinking straight. I've got my choices down to one of two canned systems (this time round) one active, the other passive. Had two plumbers round to look at the place and give quotes for their systems...