Mapai Ultraplan Renovation Screed 3240 fibre reinforced self-levelling compound is designed for the renovation/refurbishment of existing floor slabs. For use in both commercial and domestic situations it can be poured in thicknesses from 3mm – 40mm on concrete, screed, stone, ceramic, timber (plywood, chipboard, T&G floorboards). Suitable for use with underfloor heating and for encapsulating electric cable undertile heating systems..