Hi all i am after some info on rendering on insulation with sand and cement this is a job i will be doing in belgium apparantly the boards are fixed to the wall then EML screwed through the boards to the main wall my question is would sand and cement hold ok i have never renderd on to insulation boards before i am gueesing this would ussually would be done with k rend or monocouch also would like advice on fixing beads to boards any advice would be appriciated thanks in advance paul packplastering essex