I am slabbing my garden which is 21feet by 11feet and the slabs are 18inch by 18inch square how many slabs would I need
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You 'll also need to dig out a minimum of 6" of Soil and refill it with approximately 5 tonnes of what is called Scalpings level it compact it then put a couple of inches of Sharp Sand over the Scalpings compact the Sand and then lay the Flags upon this other wise they will move after a while of being laid . You will also need to point the gaps between the Flagstones with Mortar and it would not be a bad idea to lay a P.v.C membrane under the Sand to deter Weeds before laying them
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