Sorry if this isn't the right section but I couldn't find an obvious 'fit'
Have been looking for a sandpit for my kids to put on a stone terrace. Ideally I'd like a wooden one but it seems that they all are open at the bottom and just have a ground sheet. OH says that these are only suitable for use on grass and that the sand will get soggy and horrible if it is placed on a hard floor as any water that gets in won't be able to run off given that the floor underneath won't be permeable. Has anyone used a wooden sand pit on a hard floor surface or am I just going to have to live with a giant piece of plastic in an animal shape instead? Thanks