Length 30 meters, thickness 10mm, width 20mm MasterSeal 910 WaterBar is suitable for all construction joints subject to hydrostatic pressure on one or both sides. MasterSeal 910 provide simple but efficient Waterproofing of construction joints. Movements in the joint e.g by shrinkage or settlement in the substrate, are taken up by the elastic profile of the MasterSeal 910 waterber. Successfully employed to waterproof joints where an opening of up to 5mm was deliberately created.