UltraSeal XP features XP technology, the latest innovation in active waterproofing. This advanced polymer technology provides exceptional performance in a wide range of ground contaminates, including high-saline conditions. Most importantly, it has been proven effective in both hydrostatic and non-hydrostatic conditions. Unlike passive membranes when used alone, the self-Sealing ability of the active XP technology enables the UltraSeal XP waterproofing membrane to Seal minor cuts or damage to the membrane.