Basement, Water Tank & Sump Waterproofing

Basements and lift pits that stayed dry all year start weeping when the monsoon raises the water table. Water tanks lose level overnight. These are hydrostatic-pressure problems — they need crystalline or polymer-modified cementitious systems engineered for water-retaining and below-grade structures.

This collection includes crystalline waterproofing mortars, two-pack cementitious systems and flexible protective coatings suitable for basements, underground sumps, lift pits and water tanks (check each product page for potable-water approvals).

Read the complete basement waterproofing guide for positive vs negative side strategy, and estimate quantities with the calculator.