Rolltop Ridge Flashing

930x2000mm Size 2000mm x 930mm Number of Corrugations 10 Sheet Thickness approx 3mm Weight approx 5.4kg Watertight Freeze Proof Base Material: special cardboard blank consisting of 100% recycled material, a sandwich construction similar to fibreboard. Non poisonous, asbestos free, organic fibrous material. BITUWELL HART-S PLUS sheets are completely impregnated with non harmful, trade-marked bitumen, with a colour impregnation that firmly adheres to the base material, thus ensuring a long standing colour stability. The corrugated Bitumen sheets are classified as building material class B2 (normally inflammable) as per DIN4102. The colour will uniformly grow lighter in the first weeks after laying. This is a normal process that rapidly stabilises.