Garden walls

[ankers]

Doing a job for a builder. He is building some garden walls 2 blocks high and wants them rendering in mono. Hes not sure to put a course of bricks then dpc or if he can just use 2 blocks with no dpc. Hes concerned about the strength of the wall if it has a dpc? Any help will be appreciated

 

[Vincey]

In summer did some low level ocr went back there last week because a bead had cracked , when I walked in looked round to see all the rest was ok but noticed Algee forming on the steps area already and that was ocr
Just my view on it is ocr and paint it is best with gardens