Interesting stuff.
I also have a workshop in the making which will have wool as roof insulation. Some wood waste product in the walls.
We used raw wool to insulate the walls and roof of our hen roost and it works well. I’ve heard no complaints about beasties from the birds but they always appreciate bit of protein.
When it gets real cold which it does, we live in the north of Sweden lat 63.96 N, I give the space a blast with a car heater and the heat holds pretty well.
Wool is great stuffed in around window frames too. And on the garden as a cover/mulch, quite amazing really.
As to washing, we’ve just picked out the least shitty bits. When we do wash the wool we use a tiny bit of linseed oil soap.
That’s my tuppence.
In addition ‘slaked lime’ can be added to the wool to control infestations, mice etc. That’s a tip from another trusted wool enthusiast, that we we’ll use next project. She just sprinkles it on as I understand.
Thrupence.
