Thanks so much all of you for your advice. I appreciate it. I can see I am going to have to grit my teeth and get it done properly. Do you all have membranes too? And what sort of price would you reckon for a standard size all in?
I am having a sand school built - but have received hugely different advice (and quotes) on how we should have it constructed. We live on the Isle of Wight and the comon method here is for a chalk base as that is readily available, but I have heard that chalk can compact eventually and cause...