The IKO Challenger sand surfaced underlay can be used where additional surfacing in the form of chippings or promenade tiles will be provided.IKO Challenger 180 Poly Sand 20mSKU: 50170000£61.32PriceSales Tax IncludedQuantity*Add to CartTechnical InfoRoll Weight 40kg; Length 20m; Width 1mTraditional pour & roll applicationSand surface finishTough 180g/m2 polyester baseAPP bitumen coatingManufactured to BS 874710 year materials guaranteeTechnical information available here