The only cavity tray manufacturer awarded European technical approval, Cavity Trays says it has an approach to tackling level thresholds that literally and physically covers the problem.<br> <br> The Type LTT Level Threshold Tray is a three-dimensional preformed unit for use on inner and outer skins of a level threshold. It envelops opening masonry horizontally and vertically, permitting converging elements to unite within a protective arrangement.<br> <br> It isolates the areas susceptible to damp transference so flooring, insulation, dpcs and membranes can merge with both skins that are themselves isolated from dampness at the point of convergence. Each skin becomes an isolated encapsulated structural element.<br> <br> The product is manufactured from solid polypropylene dpc in all standard skin thickness or opening dimensions. It provides housebuilders with a standardised and consistent level threshold solution.