I am having a new house extension and the floor dig up in existing dining room total of 3 rooms 62sqm as we are having ufh and due to the size my builder is suggesting that to minimise the potential to damage the pipework it would be better to use liquid screed to cover the area to a depth of approx 65mm could someone give me an indication of price on this amount of screed pumped in , also any recommendations in the Nottingham area ... Appreciate any help / comments