Self-adhering sheet membrane waterproofing.

A composite sheet waterproofing membrane, ENVIROSHEET provides an easy means of installing a uniformly thick waterproofing membrane on both horizontal and vertical surfaces to protect against the infiltration of water. ENVIROSHEET is produced at a factory controlled thickness to provide a uniform 60-mil (1.5 mm) application and consists of 56-mils of rubberized asphalt and a 4-mil cross-laminated, polyethylene carrier film. The two components are laminated together under strict quality-control procedures to produce an extremely tough waterproofing barrier.


ENVIROSHEET membrane is supplied in 200 square foot rolls, 36” (914 mm) wide by 66.7’ (20.3 m) long. The rubberized asphalt is covered with release paper which is removed prior to installation. The membrane is cold-applied and self-adheres to a properly prepared and primed substrate. A cold-weather version;

ENVIROSHEET LT is available for applications where the ambient temperatures will be between 25°F (-4°C) and 60°F (16°C).

ENVIROSHEET membrane is ideal for:
Waterproofing concrete, masonry block, and wood surfaces. It can be applied to foundation walls, tunnels, utility vaults and earth sheltered structures. It can also be used to waterproof split-slab construction, both above and below-grade, such as plaza decks, balconies, and parking decks. Interior uses may include mechanical rooms, laboratories, kitchens, and bathrooms. ENVIROSHEET membrane is typically not recommended for under slab applications and can not be used for property line applications.

ENVIROSHEET requires the use of a substrate primer, detailing mastics, and a protection board for all applications. Concrete surfaces must be cured properly and dried a minimum of 7 days for normal structural concrete and 14 days for lightweight structural concrete or non-vented pan decks. ENVIROSHEET should not be applied in freezing temperatures or to damp surfaces.



A self-adhering composite sheet waterproofing membrane, ENVIROSHEET consists of 56-mils of rubberized asphalt and a 4-mil cross-laminated, polyethylene carrier film. The two components are laminated together to produce an extremely tough waterproofing barrier.

M-2000 Liquid Flashing

A single-component, trowel-grade moisture cured polyurethane mastic, M-2000 LIQUID FLASHING is used with CETCO Waterproofing Systems to detail primarily at membrane terminations, around horizontal deck penetrations and transitions, over grouted concrete form-tie holes, and provide fillets to inside wall corners. Available in 18.9 Liter (5-gallon) pails.


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.

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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