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Aussie Gas-Lock 420-FC

Aussie Gas-Lock 420-FC is a high-performance, two-component, fluid-applied gas vapor barrier system formulated to block methane, VOCs, and other soil gases.

The product consists of a chemically cured, water-based polymer blend reinforced with synthetic compounds for enhanced flexibility, adhesion, and chemical resistance. Once applied, it forms a seamless, elastomeric membrane that effectively seals substrates against gas intrusion while accommodating structural movement and surface irregularities.

Where to Use

Aussie Gas-Lock 420-FC is ideal for use in the following applications:

  • Methane mitigation zones
  • VOC-contaminated soil area
  • Top of slab vapor barrier systems
  • Podiums and structural slabs
  • Foundations and slabs adjacent to landfills or former industrial sites

Safety Data Sheet A

Please view the Safety Data Sheet.

Aussie Gas Lock 420 Sds Part A

Safety Data Sheet B

Please view the Safety Data Sheet.

Aussie Gas Lock 420 Sds Part B

Technical Data Sheet

Please view the Technical Data Sheet.

0420 Tds Aussie Gas Lock 420 Fc

Description

Key Features

  • Gas-Tight Protection — Blocks methane, VOCs, and other harmful soil gases with a seamless monolithic membrane.
  • Flexible & Durable — Accommodates minor substrate movement while maintaining gas barrier integrity.
  • Environmentally Friendly — Water-based and low-VOC, making it safer for installers and indoor environments.
  • Easy to Install — Fluid-applied by spray, roller, or brush for quick coverage and full substrate conformity.

Material

Liquid-Applied (Two-Component Polymer System)

System

Both Below-Grade and Above Grade Vapor Intrusion Mitigation System

Installation

See Installation Instructions for warnings, installation instructions and information on various application surfaces.

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