A flexible, self-sealing, hot-applied, rubberized asphalt waterproofing system.

STRATASEAL® HR combines decades of membrane polymer experience and advanced mineral enhancement technology into a 100% solids thermoplastic product that is flexible as well as self-sealing. In the unlikely event of damage to the membrane, the advanced adhesion properties of STRATASEAL® HR limit lateral water migration to the damaged area.

STRATASEAL® HR is ready for use and requires no set-up to provide a water-tight membrane.

It features the dependability of hot-applied technology, while meeting and exceeding the requirements of the Canadian General Standards Board (CGSB 37.50-M89) as well as ASTM International.

Exceptional waterproofing performance:

Protection from water ingress:

  • STRATASEAL HR creates creates a continuous, seamless membrane able to be installed on new or existing construction applications.
  • It can tie into other CETCO foundation waterproofing membranes, offering a single-sourced transition and a complete system warranty with the HydroShield Quality Assurance Program.
  • Long-standing history of proven success.

Installation benefits and features:

Fast and Easy:

  • Lightweight rolls.
  • Eliminates the inconvenience and potential installation variability that may be experienced in the field with two-component products.


  • With the use of CETCO accessory products, STRATASEAL® HR can be installed in a variety of applications to ensure a watertight system.
  • Can be combined with CETCO’s GreenScapes™ Green Roof System for a complete warranted green roof assembly.
  • Can be installed as a component of a protected membrane roof, a plaza deck, asphalt paving assembly, split-slab construction, tunnels, as well as planters, green roofs, or other landscaped assemblies.
  • Can be installed in temperatures as low as 0°F.
  • Suitable for use in new construction as well as retrofit applications.

STRATABOND 100 Reinforcement Fabric

A 1.5-oz/sq-yd high strength, spun bonded polyester fabric used as a reinforcing layer with STRATASEAL HR hot-applied rubberized asphalt membrane. Stratabond 100 maintains its physical properties when wet and dimensionally stable over varying humidity levels and exhibits high resistance to splitting and cracking from thermal shock.


A hot-applied rubberized asphalt membrane, STRATASEAL HR is ideal for protected roof and split-slab deck waterproofing applications. Its a 100% solids thermoplastic product that is flexible as well as self-sealing. STRATASEAL HR is ready for use and requires no set-up.


An active, flexible strip concrete construction joint waterstop, WATERSTOP-RX provides a strong positive seal by expanding upon contact with water. Proven effective on projects worldwide for over 20 years, Waterstop-RX is designed for both continuous and intermittent hydrostatic conditions. WATERSTOP-RX is available in multiple configurations.

Approval and Certifications

Architectural Specifications

Case Studies

LEED Letter

Product Manuals

Product Sheets

Technical Data Sheets

Helios Energy Research Facility

Berkeley, CA, USA

From design development to construction, CETCO’s expertise in waterproofing was called upon to ensure that the basement, housing expensive laboratory equipment, remains dry at all times. CoreFlex’s composite system also saved the added labor of a two-membrane installation process.

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Mercy Hospital Plaza

St. Louis, MO, USA

To minimize building exposure, poor air quality, and odors, this occupied hospital utilized COREFLEX to waterproof the plaza deck prior to installing a GreenScapes vegetated roof system, hard-scape and water features.

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Ronald McDonald House

Chicago, IL, USA

CETCO provided the complete watertight green roof assembly for the nation’s largest Ronald McDonald House. Protected by CETCO’s COREFLEX® waterproofing membrane, three GreenScapes assemblies—intensive, extensive, and vegetated trays—were utilized to meet a challenging landscape design.

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Rush University Hospital Atrium

Chicago, IL, USA

Rush University is one of the top-ranked nursing colleges in the US. Its hospital is comprised of 676 beds and boasts national rankings in 10 of 16 specialty areas in U.S. New & World Report’s 2011 “America’s Best Hospitals” issue.

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Shady Hills Gymnasium and Parking Garage

Cambridge, MA, USA

The original spec called for ULTRASEAL below slab with a layer of VOLTEX DS installed over it to provide protection from subsequent concrete operations. However, once the dewatering of the site began, it became apparent that there would be significantly more water at a greater flow rate.

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Toronto Fire Services

Totonto, ON, Canada

Vapor intrusion has become a significant environmental issue for regulators, industry leaders, and concerned residents nationwide. The use of a spray-applied gas vapor barrier to protect against the threat of vapor intrusion has become a widely recognized application by numerous local and state regulatory and guidance groups.

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Wake Forest University Hosp. Plaza Deck Restoration

Winston-Salem, NC, USA

Restoration of the plaza deck was required for watertightness of the hospital space below and reopening of the emergency room entrance. COREFLEX was quickly installed over the leaking hot-applied rubber membrane to complete the project on time with minimal building exposure.

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Washington Univ. School of Medicine Plaza Deck Restoration

St. Louis, MO, USA

When it was decided that a courtyard would be implemented into the WUSM/BJC Medical complex, the design team understood that waterproofing and protecting the occupied space below during construction would be critical to the success of the project.

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