JUTA

LIQUID GAS BARRIER

JUTA GP® Liquid Gas Barrier is a ready for use specialist styrene butadiene latex-based liquid applied membrane. It offers a simple, continuous passive gas prevention barrier against the ingress of methane, carbon dioxide, radon, ground gas, VOC, air and moisture into buildings.

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Product Benefits

  • Acts as a waterproofing membrane.
  • Can be used as a DPM on walls and floors.
  • Complies with the latest codes of practice as published by BR211, CIRIA and BSI (BS8485:2015).
  • Suitable for use as a gas protection for NHBC GREEN, AMBER 1 and AMBER 2 site characterisations.
Product Description

Handling

Material is supplied in tubs of 5kg or 15kg weight. Appropriate care must be taken when handling. Clean tools with water immediately after use.

Storage

Store tub in conditions between 5°C and 30°C; shelf life 12 months unopened.

LIQUID GAS BARRIER

the background surface should be smooth or have a light even texture, and masonry should be flush pointed and defects in the surfaces made good prior to application. The surface should be clean, sound and free of dust, loose material or free surface water.

The Liquid Gas Barrier should not be applied in wet conditions or where inclement weather is expected before the membrane has dried. The membrane should not be applied in temperatures below 7°C.

Where multiple coats are applied, it is recommended that the coats are applied at right angles to each other. Before application of secondary coats it is necessary to let the first coat become touch dry.

The time required to reach touch dry condition will vary dependant on site conditions within the working area, but will typically be in the order of 1-2 hours in favourable conditions. It is preferable that secondary coats are applied with 24 hours.

For hydrostatic applications – the use of JUTA Crystalline Active Barrier  (CAB) should be used prior to the application of Liquid Gas Barrier.

Coverage

May be applied by brush, roller or airless spray. A minimum dry coated thickness of 1.0mm is needed to provide a gas barrier. To achieve 1.0mm thickness, a total of 2k/m2
is required, therefore, a 15kg tub will cover an area of 7.5m2 and a 5kg tub will cover an area of 2.5m2.

Jointing and Sealing

JUTA GP® Liquid Gas Barrier is compatible with with loose laid membranes supplied by JUTA UK, such as JUTA GP®1, GP®2, GP®H and GP®TITANTECH membranes.

LIQUID GAS BARRIER
Site Investigation
Site Investigation
Site Investigation Reports Monitoring Results. We review these reports and advise routes for compliance.
System Design
System Design
Full Ground Gas Protection System Design available.
Specification
Specification
Wide library of standard details with site specific details on request.
Installation
Installation
All our installers are certified NVQ Level 2 qualified installation contractors.
Validation
Validation
We ensure your project complies with the relevant building regulations.

Ground Gas Standards 

There are many different standards and guidance documents that detail how to understand the risk of ground contamination, and design solutions to mitigate these risks. The different documents relate to different ground contamination. Below are some of the key documents to be aware of and refer to:

BS 8485:2015+A1:2019 – Codes of practice for the design of protective measures for methane and carbon dioxide ground gases for new buildings.

  • Ground gases typically found near landfill sites, but can occur from other sources
  • Encourages the use of qualified installers
  • Validation to Ciria C735 is a requirement
  • Additional influences on the system should be considered, such as the hydrostatic conditions, and the likelihood of the source contaminant being in direct contact with the protective measures proposed
LIQUID GAS BARRIER

BRE 211:2015 – Guidance on protective measures for new buildings. (RADON)

  • Naturally occurring ground gas. Larger concentrations in the South-West of UK
  • Minimum recommendation is a membrane of 300 micrometre (1200 gauge) polyethylene sheet or equivalent
  • It must be installed with considerable care and protected once installed
  • Taped laps are required
LIQUID GAS BARRIER

CIRIA C748:2014 – Guidance on the use of plastic membranes as VOC vapour barriers

CIRIA C682:2009 – VOC Handbook

  • Risk-based approach
  • No quantifiable limits on material performance
  • Testing to ISO 15105-2 and EN 14414/EN 14415
  • 9 main VOC types are tested for
  • Welded laps are required as most tapes are made from bitumen/butyl and are affected by VOCs
LIQUID GAS BARRIER

CIRIA C735:2014 – Good practice on testing and verification of protection systems to buildings from hazardous gases

  • Good practice on testing and verification of protection systems to buildings from hazardous gases
  • Check design and detailing is in accordance with site requirements
  • Checks the competency of the installer (NVQ LEVEL 2 minimum)
  • Test integrity of the membrane/barrier system
  • Visual inspection
  • Written report on inspection/testing and sign-off

BS8102:2009 – Code of practice for protection of below ground structures against water from the ground

LIQUID GAS BARRIER

JUTA Solutions & Applications

Our gas protection membranes suit a variety of applications and situations, with our TITAN® range offering not only gas protection but also having superior waterproofing and invasive weed control qualities.

BRE 211NHBC (Amber 1)BS8485:2015 + A1 2019 / NHBC (Amber 2)C748C748BS8102:2009RPS178C753BBA Agreement Certificate
RadonBulk Ground GassesCardbon Dioxide and MethaneVOC Vapour PermeationHydrocarbons ImmersionsTYPE-A Bonded WaterproofingInvasive Weed ControlSuDs Impermeable Membrane
GP®1
GP®2
GP®4
GP®H
GP®L
GP® TITANFLEX
GP® TITANBOND
GP® TITANTANK
GP® LIQUID GAS BARRIER
GHDPE 0.6mm

Get In Touch With The Experts

If you feel first class service, premium products direct from source, and bespoke solutions are right for you then don't hesitate to contact our team today on 01772 754177 or email us at info@juta.co.uk

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