The basics are to cover your joints and lay stones with their length pointing into the wall where possible. there are some free PDF leaflets here that explain more. https://www.dswa.org.uk/leaflets/
The basics are to cover your joints and lay stones with their length pointing into the wall where possible. there are some free PDF leaflets here that explain more. https://www.dswa.org.uk/leaflets/
RE: Please show your working out! :-)