Ultraseal® P-201A

A high-performance hydro-reactive mastic for sealing and waterproofing passing bodies and cracks. Ultraseal P-201A will expand up to two times (100%) by volume in the presence of water, in the direction of least resistance. When expansion is inhibited, Ultraseal P-201A will produce expansion pressure against the resisting substance, effectively sealing off water penetration.

Product Description

Ultraseal® P-201A is a high-performance, hydro-reactive mastic formulated to seal and waterproof cracks, joints, and penetrations in both new construction and repair applications. Upon contact with water, it expands up to 100% by volume in the direction of least resistance, effectively sealing off water penetration. Its ability to function in a wide range of temperatures and groundwater conditions makes it a versatile solution for various waterproofing needs.

Key Benefits

  • Hydro-Reactive Expansion: Expands up to 100% upon water contact, ensuring effective sealing of cracks and joints.
  • Versatile Application: Suitable for use in damp and uneven surfaces across a range of temperatures and groundwater conditions.
  • Compatible Systems: Approved for use with TREMproof® Amphibia™ system and other waterproofing applications.
  • Efficient Installation: Easy to apply, facilitating streamlined installations even in challenging conditions.

Best For

  • TREMproof® Amphibia™ system
  • Control joints
  • Expanded metal forms
  • Piping penetrations
  • Crack and joint repair
  • Sheet pile interlock sealant
  • Precast segmented sealant

Product Properties

Property Specification
Appearance Light gray mastic
Specific Weight 1 g/cc
Volumetric Expansion in Water Approximately 100% (2 times by volume)
Polymerization Time @ 68°F (20°C), 60% RH Less than 10 hours
Water Tightness 1 atm