i have just puchashed 11 packs of ashbourne patio packs for my back garden from travis perkins,they are riven concrete in cots buff colour. i av had 3 people to quote me on getting them laid and all have refused to lay them saying there a nightmare to do??? one said they need full bed of morter and another said different i am really confused .my garden has been levelled with aload of stone and has also had eco drains put in .can anyone shed any info on these type of slabs or how they should be laid please?