Project Profile Video

GMS Concrete Uses Drago Wrap Vapor Intrusion Barrier in Brownfield Redevelopment to Protect Phoenix Apartment Building against TCE



For 36 years, GMS Concrete has been building the foundation of residential living in the Valley of the Sun. When they won the job to place the concrete slabs at a four-building apartment complex, the soil finding of one 15,000 sq. ft. building location presented a specific challenge: TCE.

Trichloroethylene – or TCE – is a commercial degreaser for machinery and for fluids like paint remover. The volatile organic compound is also particularly dangerous to human health in both the short and long term, according to the Environmental Protection Agency.

The solution for GMS manager Matthew Medina came in two forms: Drago Wrap Vapor Intrusion Barrier and Beast Concrete Accessories.

Drago Wrap is specifically engineered to protect against volatile organic compounds (VOCs) like TCE, and serve as a below-slab moisture vapor barrier.

GMS could screed the slab using the Beast Screed point-to-point wet screed system while securing interior form work with Beast Foot and Beast Form stake without making a single puncture in the vapor intrusion barrier. Doing so could have exposed the slab and building occupants to the dangerous below-slab environment.

According to Medina, their success also relied on:

  • On-the-ground installation support from a full-time Stego expert located in Phoenix
  • A wealth of materials – in English and Spanish – to educate his crews on how to put the unfamiliar materials to work quickly and effectively, and
  • Stego’s rapid fulfillment of product through its network of distributors

Need Help Selecting the Right System?

We’ve got you covered!

  • Site-Specific Analysis – We can provide under-slab methodologies and other support for your specific vapor intrusion mitigation design.
  • Product Choices - Let’s figure out which Stego barrier system is right for you: sub-slab protection from moisture vapor, radon or VOC’s.
  • Installation Options - Evaluate the cost and benefit of different installation practices to determine what is best for your specific details.
  • Personalized Training - Get the latest product training for your team and crew.

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