205mm Cordek Cellvent HX EPS Insulation Board combines the benefits of Ventform with the Cellcore HX range. This product tackles ground movement concerns whilst functioning as an efficient gas venting solution. Purpose-built for installation under properly reinforced ground floor slabs, the 205mm thickness addresses anticipated ground heave. For full technical guidance and design details, please review our Ground Heave Solutions brochure available in the downloads section.
Brand: Cordek®
Thickness: 205mm
Length: 2400mm
Width: 1200mm
Coverage: 2.88m2
Dimensions: 2,400mm x 1,200mm x 205mm
Grade: 7/10
Model: 205mm Cellvent HX (Grade 7/10)
Colour: White and Green
Consistancy: Rigid cellular void former
Material: (EPS) Expanded Polystyrene Board
Applications: Beneath reinforced concrete floor slabs
BBA Certified: Yes, no. 11/4862
Features: Ground heave protection gas venting system
Manufacturer: Cordek Cellvent HX®
Cellvent HX provides flexibility with a selection of specifications designed for different ground conditions on any project. It integrates seamlessly with Cordek gas membranes, vent outlets, and venting accessories to create a complete gas protection system.
The following tables help you select the right depth and grade of Cellvent HX panel based on your soil type and planned reinforced concrete slab thickness:
Available depths and grades include:

The 205mm Cordek Cellvent HX Grade 7/10 unites the strengths of the Cellcore HX collection with Ventform technology, effectively managing ground heave whilst providing excellent gas venting performance.
Supplied in various specifications, Cellvent HX integrates easily with gas membranes, vent outlets, and venting accessories to establish a full gas protection system.
Engineered specifically for placement beneath adequately reinforced ground floor slabs in locations where subsidence is not a concern, the Cordek EPS Void Former Formwork Cellvent HX meets these needs.
Delivering equivalent ventilation performance to the Ventform 80 range, including a 40mm void depth, Cellvent HX is EPS insulation board for applications requiring a comprehensive gas protection system. For higher venting capacity needs, get in touch with our team.
The Cellvent HX panel thickness depends on the expected degree of ground heave.
Browse our Cordek range and narrow results by thickness or coverage using the filters on the left. To discuss product suitability for your project or request a volume discount, contact us on +4402038839057, email sales@insulationbee or use Live Chat - Competitive UK EPS Insulation Board Pricing.








