hi been plastering and rendering a few years lately having a problem with render blowing cracking and sometimes top coat appears weak ie easily marked when ladders leant against them i always soak walls first with water use washed plastering sand 4 and 1 cement use addmixture everbuild 3 in 1 premium waterproofer retarder & plasticiser to slow down setting time then soak the scratch coat then apply top coat with 5 sand 1 cement again with the 3 in 1 add mix as above then float wall and sponge granted last job was on relatively hot day and sun was on wall all afternoon could the 3in 1 additve in both coats be making it weak or would it be worth using lime never used it before always used plasticiser instead the finish looks great please advise
i also have to render wall that has been plyed then felted we have then fixed eml then done a slurry coat of cement mixed with sbr bond then rendered as above i know im after lot of info in one question please help
i also have to render wall that has been plyed then felted we have then fixed eml then done a slurry coat of cement mixed with sbr bond then rendered as above i know im after lot of info in one question please help