Hi, I have recently had my self build house rendered. It was built last year in concrete blocks but we didn’t get around to the rendering until this year. We got a renderer in to do it and he used weber pral.M decorative render ( that is what it says on the invoice). We asked a few times when he was doing it if we would be able to still see the blocks when it was finished and he said “no, not once it has dried out properly in about 2 weeks”. It is now four weeks later and we can still see them, is this normal?