The quanities were all measured using buckets and it was allowed to mix for a fair time in a mixer. I believe the problem was too much plasticiser/waterproofer. This additive is different to ones I have used before when I have mixed up for other people and I believe I have used to much.
I...
Hi all,
I have been rendering my garden walls (first time actually doing it) and I have only got the scratch coat on at the moment however it seems very weak and powdery.
I used plasticiser with a 5(sharp sand):1cement mix any ideas what went wrong.
Can I recover this with the top...