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Durable – Versatile – Proven

Spray-applied membrane designed to protect air, soil, and waterways from the toxic impacts of contaminated sites.


Posi-Lock™ formulations are used on Superfund and Remediation sites all over the world to:

  • Contain odors and VOCs during active excavation
  • Prevent migration of toxic dust and ash
  • Encapsulate contaminated soils and stockpiles
  • Eliminate toxic infiltration into groundwater
  • Contain coal ash and asbestos
  • Establish debris containment following fires


Posi-Lock™ is a unique mineral-based mortar membrane offered in various formulations to meet specific project requirements:

  • Formulations to balance durability with cost
  • Available in brown, grey, and green


  • Easy to Apply – Install multiple acres per day; Use LSC Applicators or standard hydroseeders to apply; Minimum surface prep; Apply remotely where safety or access is a concern.
  • Durable – Formulations for durability measured in days, months or years.
  • Versatile – Easily accessed and patched if ongoing excavation required; Withstands even the most intense rainstorms; Can be applied year-round in all conditions; Scalable for small or large projects; No product shelf life.
  • Eco-Friendly – Used on some of the world’s most environmentally sensitive sites; Mineral-based membrane; Insignificant removal or disposal costs; Minimal fuel and equipment required.

Trusted by Leading Remediation Companies

Posi-Lock™ is used during active excavation, over-night cover, or for extended long-term cover.

Posi-Lock™ Case Study on Coal Ash

Coal Ash Containment: 3:1 Slopes covered with Posi-Lock™ after 1 year and 90” of rain!

Notable Projects:

  • Toxic Dust Control — Hanford Nuclear Site
  • Asbestos Containment — 911 World Trade Center Cleanup
  • Odor and Infiltration Control — Contaminated Pond Dredging at Ethanol Production Facility
  • VOC Containment — Superfund Site in Populated Metropolitan Area
  • Debris Containment — California Wildfires


Use the form below to ask us a question about our Posi-Lock™ and our team will contact you within two business days.

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