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Protect your Investment from Vapor Intrusion!

LIQUID BOOT® is the most extensively used under slab gas vapor membrane we use in the United States.

Gas Vapor Barrier System — PLUS Gas Vapor Barrier System — GeoVenting System

LIQUID BOOT® — Gas Vapor Barrier System

System Description

Liquid Boot® is a seamless, spray-applied, water-based membrane containing no VOCs, which provides a barrier against vapor intrusion into structures

Liquid Boot® is installed under slab and on below grade vertical walls as a gas vapor barrier to minimize vapor and nuisance water migration into buildings and is ideal for methane migration control.

Liquid Boot® spray-application directly to penetrations, footings, grade beams, pile caps, etc., provides for a fully-adhered gas vapor barrier system.

Typical Uses

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Underslab and below-grade vertical wall gas vapor barrier, used to minimize vapor and
nuisance water (non-hydrostatic conditions) migration into buildings.

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Ideal for methane migration control.

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Concrete water reservoir and tank liner used to prevent water seepage into concrete.

Structural Slab
UltraShield™ Protection Layer
LIQUID BOOT®
BaseFabric™ Base Layer
GeoVent™ System
Subgrade

Benefits

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Spray application provides excellent sealing of penetrations, eliminating mechanical fastening.

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Seamless, monolithic membrane eliminates seaming-related membrane failures.

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Unique formulation provides superior protection from methane gases and water vapor.

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Fully adhered system reduces risk of gas migration.

LIQUID BOOT CHEMICAL & PHYSICAL PROPERTIES*

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LIQUID BOOT® — PLUS Gas Vapor Barrier System

System Description

The Liquid Boot® PLUS system is a combination of the traditional Liquid Boot® spray-applied membrane and VI-20™, a 20-mil, high performance polyethylene-EVOH copolymer membrane.

The system, paired with the GeoVent™ Gas Venting System, is designed to provide excellent resistance to contaminants.

The Liquid Boot® membrane is spray-applied to a uniform substrate, provided by the VI-20™ geomembrane, bonding together to create a highly resistant protection barrier.

Once the membrane is fully cured, UltraShield™ non-woven geotexile protection course is installed.

Typical Uses

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Installed under slab and on below grade vertical walls as a gas vapor barrier to minimize
vapor and nuisance water (non-hydrostatic conditions) migration into buildings.

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Ideal for applications with chlorinated solvents, BTEX and other PAHs.

Structural Slab
UltraShield™ Protection Layer
LIQUID BOOT®
VI-20™ Geomembrane
GeoVent™ System
Subgrade

Benefits

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Combines the advantages of a spray-applied membrane with the performance of a technically advanced geomembrane.

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60 mil Liquid Boot® plus 20 mil VI-20™ provides excellent resistance to punctures and tears.

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VI-20™ EVOH barrier technology provides superior protection against diffusion of chemicals
when compared to typical HDPE geomembranes.

VI-20™ Superior Performance Geomembrane With Evoh Technology

The Liquid Boot® PLUS system is a combination of the traditional Liquid Boot® spray-applied membrane and VI-20™, a 20-mil, high performance polyethylene-EVOH copolymer membrane.

The system, paired with the GeoVent™ Gas Venting System, is designed to provide excellent resistance to contaminants. The Liquid Boot® membrane is spray-applied to a uniform substrate, provided by the VI-20™ geomembrane, bonding together to create a highly resistant protection barrier. Once the membrane is fully cured, UltraShield™ non-woven geotexile protection course is installed.

LIQUID BOOT with VI-20™ CHEMICAL & PHYSICAL PROPERTIES*

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GeoVent™ — Gas Venting System

System Description

Venting systems are typically installed in conjunction with a gas vapor barrier when volatile or explosive gases are present.

GeoVent™ is a low profile pressure relief, trenchless collection and venting system designed to improve venting efficiency and reduce installation costs. GeoVent™ has several advantages over trenched installations and can be used as an “active” or “passive” venting system depending on the specific project.

Used in conjunction with Liquid Boot® or CoreFlex™ gas vapor barrier systems, GeoVent™ can alleviate the accumulation of gas vapors under the slab.

Typical Use

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GeoVent™ is designed for use as active or passive under-slab venting when used with all CETCO gas vapor mitigation systems.
Structural Slab
Protection
Membrane
Base Layer
Subgrade
Gas Venting
Vent Riser
GeoVent™
Header Pipe
End Outlet

Benefits

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Installed directly on subgrade eliminating costly trenching and potential interference or damage to existing underground utilities.
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Placed in closer proximity to the gas vapor barrier allowing for more effective venting of any accumulated gas vapor.
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Greater opening area per linear foot of pipe and integral filter fabric allowing for higher ventilation efficiency.

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Installed at a higher elevation reducing susceptibility to inundation from perched groundwater that may accumulate beneath the building foundation.
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Flow characteristics meet or exceed that of a typical trenched installation. The overall capacity of the system is far in excess of typical gas flux rates.

GeoVent™ CHEMICAL & PHYSICAL PROPERTIES*

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