Below-grade, pre-applied waterproofing for the most complex underground construction — effective, durable, easy to install



Our below-grade waterproofing solutions protect commercial buildings and infrastructure in the world's harshest climates. 

Leading the way since 1990 are our reliable Preprufe® waterproofing products. Preprufe® waterproofing membranes create seals that prevent water migration between the membrane and your structure in every direction. They were the industry's first pre-applied membranes to permanently shield buildings from water and damaging gas, vapor and moisture.

Preprufe® membranes are easy to install, helping your project stay right on track. Position the roll. Kick it out. Secure the overlaps with Preprufe® ZipLap™ quick-sealing adhesive. That's it — you're done.

And when it comes to complete building envelope protection, Preprufe® membranes are in perfect company. Compatible Preprufe® products cover every vulnerability, joint and detail. They include:

  • Deck systems

  • Detail tape

  • Cementious and epoxy grouts

  • Hydrophilic sealants

  • Tieback covers

Our above-grade and below-grade waterproofing products form complete building envelope systems

Engineers and architects have also trusted our industry-leading portfolio of waterproofing brands for over 50 years. These solutions cover a range of below- and above-grade applications, including:

  • Post-applied waterproofing systems from Bituthene® and Procor® (above- and below-grade) and Silicor® (above-grade)

  • Deck systems from Bituthene® and Procor®

  • Waterstops from Adcor®, De Neef® SWELLSEAL®, INJECTO® and Trioject

  • Drainage mats from Hydroduct®

  • Waterproofing for flooring from Florprufe®

All our waterproofing solutions are fully compatible with our Perm-A-Barrier® air barriers and flashing products. Together, these products create a complete and durable building envelope system, from top to bottom.

The Blue360sm Advantage: essential services for your weatherproofing system, design through build

All our waterproofing products are backed by the services of our Blue360sm Advantage programs. The engineers of our Design Advantage program can review your CAD drawings, assist with your specs and help you choose the best solutions for your project.

And you can rest assured that our Field Advantage engineers will help subcontractors ensure our solutions' accurate and timely installation. Our field team is at the construction team's service to help in many ways. Count on us for:

  • Installation training at the job site
  • On-site support and troubleshooting

  • Remote technical support

  • Classroom seminars

  • Sharing best practices

Blue360sm Field Advantage: Our team is your team.