Posted: Wed Oct 26, 2005 12:23 am
I have just bought some old York stone flags of random sizes and thicknesses to lay as the floor to a conservatory. I have already laid an insulated concrete base with the intention of putting underfloor heating under the final floor covering. Normally I would bury the plastic underfloor pipes in 50mm of sharp sand and cement screed. Would this be a suitable material for bedding the flags, bearing in mind that they will need to be individually bedded? Or is there a better alternative?