TITAN

GP®1

JUTA GP®1 Gas Barrier is a multi-layer, low-density polyethylene membrane, reinforced with a polypropylene reinforcing grid with an integral aluminium foil. GP®1 is specifically designed and manufactured to perform as a Methane, Carbon Dioxide, Radon, Ground Gas, VOC, air & Moisture protection system.

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Product Benefits

  • High quality reinforced membranes.
  • Low permeability to hydrocarbon and VOC vapours, carbon dioxide, methane and radon.
  • Complies with latest codes of practice as published by the BRE and CIRIA, BS 8485
  • Independently tested by third party UKAS accredited bodies.
  • BBA approved and CE marked.
Product Description

Juta GP®1 should be used on any site where carbon dioxide, methane or radon is present up to and including CIRIA 665 SITUATION 6. The barrier is sufficiently resistant to the ingress of harmful gases into a building. On more heavily contaminated sites a passive or active venting system may be required to dilute the gases down to acceptable levels and specific design advice should be sought.

GP<sup>®</sup>1

This product is associated with the following NBS Create clause:

45-65-50/325 Plastics sheets

This product is associated with the following NBS clauses:

D21 Ground gas collection and venting systems
350 GAS RETARDANT MEMBRANE
J40 Flexible sheet waterproofing/ damp proofing
140 LOOSE LAID POLYETHYLENE GAS RETARDANT/ DAMP PROOFING
145 LOOSE LAID WELDABLE POLYETHYLENE GAS RETARDANT DAMP PROOFING

View Data Sheet
Thickness0.6mm
Width & Length1 or 0.3m x 20m
Weight1350g/ m2
Water Vapour Transmission Rate0.14g/m2/day
Full InformationCheck out the full data sheet below

Ideal for all common ground floor constructions, including:

  • Reinforced cast in-situ (ground-supported) concrete floors.
  • Suspended beam and block concrete floors.
  • Pre-cast concrete slabs.
  • Can also be used above or below the slab (not subject to hydrostatic pressure).
GP<sup>®</sup>1
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 related 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
GP<sup>®</sup>1

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
GP<sup>®</sup>1

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
GP<sup>®</sup>1

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

GP<sup>®</sup>1

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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