Ventform

Ventform provides an excellent passive gas venting medium under suitably reinforced concrete ground floor slabs. When used in combination with perimeter vents and a suitable gas membrane it creates a highly effective method of protecting structures against the ingress of harmful ground gases.

Features

  • Highly effective venting medium suitable for ground gas affected sites as part of a gas protection system
  • Provides a high degree of insulation and is manufactured from expanded polystyrene which achieves a BREEAM rating of A+
  • Range of thicknesses and grades to suit most project requirements
  • Light, robust and easy to install 1200mm x 1200mm panels
  • Ventform panels are resistant to UV light, water and are flame retardant. They contain no CFC’s or HCFC’s

In addition to passive gas venting, Ventform panels also provide a high degree of insulation to the structure above. It is manufactured from expanded polystyrene which achieves a BREEAM rating of A+.

Applications

Ventform panels are designed for use under suitably reinforced concrete slabs to form an insulated, passive gas venting layer.

Suitability

The appropriate grade of Ventform panel should be selected based upon the required equivalent void and maximum load capacity that it is required to support. This information is provided in the table below:

Dimensions and Performance Characteristics

Ventform SpecificationOverall Depth
(mm)
Leg Depth
(mm)
Clear Void Equivalent
(mm)
Maximum Load Capacity
(kN/m2)
80/2080401920
80/5080401950
100/50100603050
150/13150806013
200/1320013010013

Downloads

Data Sheets

Product Issue Date Version Size Download
Ventform Plus Data Sheet 05/2024 1 353.7 KB
Ventform Data Sheet 02/2021 4 300.9 KB

MSDS Data Sheets

Product Issue Date Version Size Download
Expanded Polystyrene MSDS 06/2017 5 137.3 KB

Certification, Approval & Guidance

Brochures

Product Issue Date Version Size Download
Construction Solutions 01/2020 2 6.6 MB
VOC & Ground Gas Protection 07/2019 4 4.0 MB

Installation Guides

Product Issue Date Version Size Download
Ventform Plus Installation Guide 05/2024 1 249.2 KB
Ventform Installation Guide 12/2018 1 264.2 KB

NBS Clauses

Our NBS Clauses are hosted on the external website - view NBS Clauses

BIM Library

Please select the BIM file in the format you require.

Name IFC Size IFC Download Revit Size Revit Download
Ventform 37.0 KB 1,000.0 KB

Not sure which product meets your requirements?

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For international enquiries please contact Peter Blanchard

For enquiries in the Manchester or Liverpool
areas please contact James Provan

Or contact Cordek Head Office

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