JUTA

GP® DPC

GP® DPC – Gas Resistant DPC is a unique single layer, embossed High-Performance DPC. GP® DPC is specifically designed and manufactured to perform as a Methane, Carbon dioxide, Radon & Moisture resistant damp proof course.

 

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Product Benefits

  • GP® DPC complies with the latest codes of practice as published by BRE, CIRIA and BSI (BS EN 14909 and BS8485:2015).
  • Suitable for use as a High-Performance DPC for vertical and horizontal applications.
  • Superior adhesion to mortar is essential for buildings of 3+ storey height.
Product Description

JUTA GP® DPC has an embossed surface to create superior mortar adhesion which is essential when being used in 3+ storey applications. JUTA GP® DPC is compliant to BS EN 14909:2012 and can be used in both vertical and horizontal applications.

Handling

Roll weights can be in excess of 5kg and hence appropriate care and equipment is required for unloading and handling.

Storage

Rolls of JUTA GP® DPC should be stored on stable/level ground and stacked no more than five rolls high, with no other material stacked on top. The rolls can be stored outdoors when packaged but should be protected from exposure to UV. JUTA GP® DPC is classified as non-hazardous and chemically inert such that it will not react with any acid or alkali environment in which it is used. 

Accessory Products

JUTA GP® DPC is an accessory product for use in combination with GP®1, GP®2, GP®H, GP®SAM, and GP® TITANTECH gas protective membranes. It is also compatible with a range of DPM and other DPC materials.

Take a look at the physical properties of GP® DPC. For full product information please see the datasheet linked below.

View Data Sheet
Thickness0.8mm
Width100-1200mm
Length20 M
Weight730 g/m2
Water Vapour Transmission Rate0.09 g/m2/day
Full InformationCheck out the full data sheet above

Installation

JUTA GP® DPC must be installed in accordance with the guidelines laid out in BS8215:1991, BS8000: part 3 and BS 5628. It can be used in most common floor constructions and is installed in a similar manner to damp proof membrane. For external walls, the DPC should be applied 150mm above the adjoining surface and should be linked to a DPM or Gas Resistant DPM in solid floors. The DPC should be applied to a fresh bed of mortar, completely free of projections that may puncture the material or impede the DPC from lying flat.

Jointing and Sealing

Sheets of JUTA GP® DPC must be clean, dry, and free from dirt and grease before application of jointing tape. JUTA GP® DPC may also be heat welded to the underlying Gas resistant membrane.

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
GP® DPC

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® DPC

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® DPC

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® DPC

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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