We have just purchased a 400 year old cob building but have had very little knowledge of cob up until now. We can see it hasn’t been looked after and we have a lot of repair and maintenance to do but some of the walls sound hollow from wasp nests and general neglect, I have read that we should fill the holes with cob but with some of them being so small this doesn’t sound right so some pointers on repair would be great, thanks.
Also we would like to replace the doors and windows as the wood frames have rotted away. Are we able to carefully make the openings bigger while supporting to allow for new frames, someone has previously bricked in a new frame