Liquid screed by Flow Screed at Bicester Oxfordshire. Great rear views and location for this new build property backing onto Bicester Golf Club. Flowscreed provided 1200g damp proof membrane, Celotex GA4100 with a 500g vapor barrier and external expansion perimeter edging with Gypsol HTC flow screed for underfloor heating. HTC flow Screed stores the heat in the screed more efficiently, with quicker ramp up time, heating the thinner mass of floor costing you less, heating your home annually.