220mm Cellcore HX B Ground Beam EPS is purpose-built for installation beneath reinforced concrete ground beams and pile caps, providing essential protection against ground heave effects. The product features a carefully engineered cellular structure made from 220mm Expanded Polystyrene, precisely manufactured and tested to deliver consistent performance and meet strict dimensional requirements.
Brand: Cordek®
Thickness: 220mm
Length: 2400mm
Width: 1200mm
Model: 220mm (Grade 7/10)
Dimensions: 2,400mm x 1,200mm x 220mm
Board Coverage: 2.88m2
Grade: 7/10
Maximum depth of concrete: 220mm
Material: (EPS Insulation) Expanded Polystyrene
Shipping method: Rigid Vehicle ǀ Courier
Applications: Ground Beams and Pile Caps / Underfloor Insulation
BBA Certified: Yes
Features: Protection against effects of ground heave
Safe load: 7 kN/m2
Plasticity Index: 40-60
Fail load: 10 kN/m2
Void Dimension (mm): 150mm
Shrinkage Category: Low
Manufacturer: Cordek Cellcore HXB
The standard range includes various depths and grades, covering typical combinations of soil heave risk and concrete depth requirements. Bespoke variants are also available for floor slab applications or where permanent formwork integration is needed.
This 220mm Cellcore HX B Under Beam product is designed to protect reinforced concrete ground beams and pile caps from upward pressures caused by ground heave.

Each 220mm Cellcore HX B grade is engineered to accommodate a specific concrete thickness, along with a live load allowance of 1.5 kN/m2, while experiencing minimal creep compression during a 16-hour curing phase. This is referred to as the "SAFE LOAD."
Upon reaching the predetermined load, the polystyrene legs of the Cordek panels will yield and collapse due to the upward ground movement, a condition known as the "FAIL LOAD."
In the structural design process, it is imperative that the slab, beam, or pile cap be engineered to withstand the disparity between its self-weight and the fail load.
Browse our Cordek range and filter by thickness or coverage on the left-hand side. For advice on product suitability for your project or to request a quantity discount quotation, please contact us on +4402038839057, email sales@insulationbee, or use Live Chat - Lowest UK Insulation board Prices.








