Ground gas and geomembrane specialists

Gas protection ventilation products

Under BS8485:2015 it is recommended that all gas protection designs should include provision for some form of sub-floor ventilation. Depending on the site risk this may be a simple pressure relief pathway or demonstrable ventilation with good or very good performance.

PAG offer advice and design appropriate for the gas risk identified including demonstration by calculation for ventilation design performance. All part of our ground gas solutions.

passive ground gas control illustration
Geocomposite installation

Ground gas ventilation products

PAG25 voidformer

  • 25mm cuspated high density polyethylene
  • High strength and crush resistance
  • Available as fully wrapped or single sided geotextile.
PAG 6 voidformer

PAG 6 voidformer

  • 6mm cuspated high density polyethylene
  • High strength and crush resistance
  • Fully wrapped geotextile.

PAGeoTechnical  has developed an extensive range of ventilation components that when installed as part of a designed gas venting system will safely disperse harmful gases to atmosphere. All PAG passive gas venting components are supplied with venting calculations to prove their efficiency in line with BS 8485.

The range includes T pipes, bends and couplings, slotted pipes, voidformer outlets, air bricks, periscope vents and many more.

PAG Standard Venting Components

Datasheets and brochures

Venting descriptionsDetails of venting components available from PAG. DownloadPreview
Vent-to-vent layer detailTypical venting component detail. DownloadPreview
V42 HSFRectangular vent. DownloadPreview
V41 HSFRound gully vent. DownloadPreview
V40 vent boxStandard vent box. DownloadPreview
PAG Standard Venting ComponentsList of PAG venting components. DownloadPreview
PAG 25 VentlayerGeocomposite venting layer suitable for use in all ground gas applications. DownloadPreview
PAG 6 Fully WrappedFully wrapped geocomopsite drain for pressure relief designs underneath buildings. DownloadPreview

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Contaminated land management specialists

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