I'm about to build my first besser block wall, about 4 blocks high and 7 meter long. I have picked up the builder loam from the landscaping place and the cement bags. I was going to mix it 4 sand and 1 cement but on the cement bag it says 6 sand, 1 cement and 1 lime.
Do you really need Lime in the mortar mix? What is Lime used for? Can i get away without using Lime and is the mortar ratio 4:1 ok to use?