POWERBASE® Gas & chemical barriers
01347 825200
Powerbase VOC
Multilayered barrier membrane for methane, radon, CO2, hydrocarbons and volatile organic compounds (VOCs).
- Independently tested to ISO 15105-2
- Compliant to BS 8485:2015 + A1:2019
- CE Marking
- High tear and puncture resistance
- Available in rolls for joining on site
- Prefabricated panels option for specified footprints
- Also acts as a damp proof membrane
HIGH PERFORMANCE BARRIER MEMBRANES
Powerbase vapour and gas barriers provide protection against naturally occurring hazardous gases and soils contaminated with hydrocarbons or toxic industrial pollutants. They are also used for groundwater and environmental protection installations.
Gas barriers are necessary wherever there is a risk of naturally occurring radon or methane gas. Radon is commonly found over granite formations whereas methane and carbon dioxide is produced as a result of the decomposition of organic matter such as made ground or natural deposits such as coal, peat or silt.
Developments on brownfield sites such as old industrial sites or contaminated land require effective gas barriers to prevent harmful gases, hydrocarbons and Volatile Organic Compounds (VOCs) from permeating into buildings.
Typically, an impermeable barrier is designed in the foundations of the building over a high permeable ventilation layer. Hazardous gases and VOCs migrate up through the soil and collect under the membrane in a sump from where they are vented and safely dispersed into the atmosphere.
The principal function of the gas barrier membrane is to prevent harmful gases from entering the building through cracks, construction joints and service openings in the floor slab. The membrane should cover the whole plan area of the structure to all external faces in order to seal the ground slab as well as any cavity walls and voids in hollow concrete block work.
Special consideration should be given to sites contaminated by Hydrocarbons or VOCs. These are very mobile compounds and will migrate relatively easily through unsuitable membrane materials. Aluminium laminates are superb gas barriers but these materials will delaminate when exposed to hydrocarbon vapour/VOCs; furthermore, the aluminium layer is susceptible to oxidation due to moisture penetrating the exposed edges. A comprehensive range of task-specific engineered barriers and accompanying Accessories provide consultants and design engineers effective barrier solutions and for the contractor a rapid, simple and cost- effective installation.
VOC BARRIER MEMBRANE
The next generation innovative engineered barrier membrane
Powerbase VOC is an innovative engineered barrier membrane to prevent the ingress of Volatile Organic Compounds (VOCs) and harmful gases including hydrocarbons, methane, radon and carbon dioxide.
It is specifically designed for developments on brownfield sites or contaminated land. A contaminated land risk assessment will identify the harmful gases and Powerbase VOC is the responsible choice to provide the necessary protection against a broad spectrum of toxic vapours and gases.
VOCs, hydrocarbon vapours and other toxins are found on many brownfield sites, especially land previously occupied by chemical and paint works, timber treatment, petrochemical plants and fuel stores, petrol stations, tanneries, paint factories, paper mills, coalfields, disposal and landfill sites. Some naturally occurring gases are also harmful and these include radon, methane and carbon dioxide.
HDPE and other homogenous membranes, many of which claim to be hydrocarbon resistant, are in fact quite permeable to certain toxic vapours and gases and do not offer adequate protection.
Powerbase VOC is supported by a unique software application, the Powerbase VOC app, a simple-to-use app which provides performance data for a wide range of harmful chemicals. This app is used by design and environmental engineers as part of the risk assessment and is available to download.
Powerbase VOC specified for major development in Southport
Full range of accessories
Easier than HDPE to install
Powerbase VOC is a multilayered hydrocarbon and chemical resistant barrier membrane. It has exceptional resistance to the commonly found hydrocarbons and chemicals. Using the advanced technology of a composite membrane, the Powerbase VOC membrane comprises protective polymeric layers on both sides of a hydrocarbon and chemical resistant inner core.
Supplied in a wide-width 3m x 50m roll offering potential labour savings and a competitive price, Powerbase VOC is the superior choice compared to other leading HDPE membranes on the market.
Powerbase VOC is complemented with a full range of top hats, corner pieces and tapes also available to order.
PRODUCT SUMMARY
|
DESCRIPTION |
Hydrocarbon resistant barrier membrane with exceptional and proven resistance to hydrocarbons, methane, radon and carbon dioxide. |
|
TYPICAL USES |
Covered installations with low level mechanical constraints, with no risk of puncture or abrasion. Environmental protection. |
|
APPLICATION |
Installed using conventional thermal (hot air/wedge) welding equipment or proprietary sealing tapes as detailed in the installation instructions. |
|
STORAGE |
Rolls should be stored inside, off the ground, protected from sunlight in cool and dry conditions. |
|
COMPOSITION |
Composite membrane comprising protective polymeric layers on both sides of a chemical resistant hydrocarbon barrier inner core. |
PERFORMANCE COMPARISON – POWERBASE VOC vs HDPE
Compliant with the latest legislation, Powerbase VOC is tested to ISO 15105-2, the test endorsed by CIRIA and NHBC :
- BS 8485 warns of the use of HDPE/ LDPE single layer type membranes with poor resistance to hydrocarbons for contaminated land projects.
- BS8485:2015 – The Code of Practice for the design of protective measures for methane and carbon dioxide ground gases for new buildings
- Ciria C748:2014 – Guidance on the use of plastic membranes as VOC vapour barriers
Powerbase VOC is the reliable solution for:
- Ciria C716:2012 – Remediating and mitigating risks from volatile organic compound (VOC) vapours from land affected by contamination
- Ciria C735 – Good practice on the testing and verification of protection systems for buildings agains hazardous ground gases
- Statutory guidance for Part 2A of the Environmental Protection Act 1990 – Guidance for the regulation of contaminated land
-
NHBC Chapter 4.1 – Land quality – managing ground conditions
The Powerbase VOC app is a unique software application that supports the Powerbase VOC membrane.
Provides site-specific permeation information for contaminants
Easy-to-use for design and environmental engineers as part of the risk assessment
Performance data for a wide range of harmful chemicals
Use the QR code above to register and access the app on a smartphone or tablet.
PRODUCT DATA
|
PRODUCT |
Colour | Weight/Thickness | Tensile Strength | Nail tear resistance | Elongation | NHBC gas proction measures | Gas permebility | Temperature range | Water Vapor resistance | Sizes | Roll weight | Pallet quantity |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
POWERBASE VOC |
Blue/Green |
475gsm 500 μm |
MD 435 XD 430 |
MD 310 XD 350 |
MD 722 XD 715 |
Green Amber 1 & 2 Red |
EN ISO 15105-2 Benzene: 4 g/m2/day Toluene: 4 g/m2/day Ethyl Benzene: 5 g/m2/day Xylene: 8 g/m2/day EN ISO 15105-1 Methane: 0.14 ml/m2/day/atm CO2: 3.01 ml/m2/day Radon: 1 x 10-14/m2/s |
-40 to +70 |
0.2 |
3 x 50 |
71 |
11 |
VOC Projects
Chemical Resistant Classes at New School
New Multigas 500 gas barrier membrane installed at warehouse-distribution unit in Greater Manchester
Disused Railway Tunnel Made Safe
The hydrocarbon resistant geomembrane Powerbase VOC providing chemical protection in a Scottish railway tunnel.
Supermarket Substructure Success
Powerbase VOC protecting a new supermarket development from contaminated land.
New Homes in Hull Regeneration Area
Geomembranes Powerbase MultiGas 300 & Powerbase VOC were selected to protect a new housing development in Humberside.
Flagship Housing Project Transformation
Residential development using Powerbase VOC to help prevent the permeation of dangerous gases, Kew.