220mm Cellcore HX B Under Beam EPS Concrete Ground Beams is specifically engineered to be employed beneath reinforced concrete ground beams and pile caps, serving as a safeguard against the potential consequences of ground heave. This product is comprised of an intricately crafted cellular structure made from 220mm Expanded Polystyrene, meticulously designed, molded, and rigorously tested to meet precise tolerances and achieve the desired performance attributes.
Brand: Cordek®
Thickness: 220mm
Length: 2400mm
Width: 1200mm
Model: 220mm (Grade 24/32)
Dimensions: 2,400mm x 1,200mm x 220mm
Board Coverage: 2.88m2
Grade: 24/32
Maximum depth of concrete: 900mm
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: 24 kN/m2
Plasticity Index: 40-60
Fail load: 32 kN/m2
Void Dimension (mm): 150mm
Shrinkage Category: Low
Manufacturer: Cordek Cellcore HXB
The standard range includes various depths and grades, matching typical soil heave risk and concrete depth combinations. Bespoke variants are also available for floor slab applications or where permanent formwork integration is required.
The 220mm Cellcore HX B Under Beam series protects 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, whilst experiencing minimal creep compression during a 16-hour curing phase. This is referred to as the "SAFE LOAD."
When the predetermined load is reached, the polystyrene legs of the Cordek panels will yield and collapse due to upward ground movement, a condition known as the "FAIL LOAD."
In structural design, the slab, beam, or pile cap must be engineered to withstand the difference between its self-weight and the fail load.
Browse our Cordek range and filter by thickness or coverage on the left-hand side. For guidance on product suitability for your project or bulk quotations, contact us on +4402038839057, email sales@insulationbee, or use Live Chat - Lowest UK Insulation board Prices.








