Best Overall: Sika Sikaflex Pro Select Self-Leveling Sealant Fill cracks up to 1.5 inches wide with this self-leveling, flexible, paintable sealer that is also waterproof once dry.

Fast-curing, sprayed Sikalastic® polyurea technology proved to be the ideal solution to waterproof and provide impact and chemically resistant linings on the exposed concrete surfaces.

Sika is the only full-range materials supplier for materials used in concrete production, waterproofing, roofing, flooring, sealing, bonding, grouting, reinforcing, concrete repair and protection ...

Sika offers a wide range of different waterproofing systems according ... for contact with acidic soft water (low pH aggressive to concrete surfaces) The membranes exhibit optimum tensile strength ...