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When testing these products BSI look at their level of waterproofing and if required, their ability to react to fire. Bitumen basement tanking sheets for use in cellars and basement rooms can also be tested to a Kitemark certification standard. Standards include: EN 13970 Flexible sheets for waterproofing – bitumen water vapour control layers EN 13707 Flexible sheets for waterproofing – reinforced bitumen sheets for roof waterproofing EN 13969 Flexible sheets for waterproofing – bitumen damp proof sheets including bitumen basement tanking sheets EN 13249 - Geotextile related products
