155mm Cellcore HX B ground beam protection boards deliver engineered EPS solutions for concrete beams and pile caps, preventing structural damage from ground heave. Crafted from precision-molded Expanded Polystyrene with cellular construction, these boards meet strict performance standards and tolerances.
Brand: Cordek®
Thickness: 155mm
Length: 2400mm
Width: 1200mm
Model: 155mm (Grade 9/13)
Dimensions: 2,400mm x 1,200mm x 155mm
Board Coverage: 2.88m2
Grade: 9/13
Maximum depth of concrete: 300mm
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: 9 kN/m2
Plasticity Index: 20-40
Fail load: 13 kN/m2
Void Dimension (mm): 100mm
Shrinkage Category: Low
Manufacturer: Cordek Cellcore HXB
The standard range features various depths and grades, matching typical soil heave risk and concrete depth combinations. Custom variants are available for floor slab applications or projects requiring permanent formwork solutions.
This 155mm Cellcore HX B series protects reinforced concrete ground beams and pile caps from upward pressures caused by ground heave.

Each 155mm 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 using the left-hand sidebar. For advice on product suitability or bulk quotations, contact us on +4402038839057, email sales@insulationbee, or use Live Chat for competitive UK Insulation board pricing.








