RYOT4 EP SHEET (Expanded polyethylene Sheets) are bond breaker and back –up material permanent preformed joint fillers manufactured from low density, closed cell expanded polyethylene. They are highly flexible and compressible with excellent recovery properties and tensile strength. In construction it is used for expansion joint fillers, foundation wraps, sound barrier,\underlay, false celling, as back up material for joints in, Concrete, brick work, block work, retaining walls, deck slabs, and reservoirs