The next step was to concrete the floor, the mix had to be very dry in order for us to form the rounded bottom of the deep end – this made it very hard to move it around and to smooth it down. In addition we had too much (for the walls we didn’t have enough!) cement – so we ended up shovelling lots out and putting it around the base of the walls outside. Unfortunately you can’t send concrete back and get a refund! Hey, ho!