Somebody local to us is having a new patio done and has about 50m2 indian sandstone to lift and dispose of. I am planning to use the lot for a raised patio in my garden, but many of them are coming up with a thick layer of cement and sub base stuck to them. Removing this seems like it would be an utter nightmare. Providing they are thoroughly cleaned, is there any reason I couldn't bed them as is onto fresh sub base and cement?

