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Cordek Cellcore HX B Under Beam EPS 220mm Ground Heave (Grade 32/42)

220mm Cellcore HX B Under Beam (EPS) Concrete Piled Ground Beams - Grade 32/42 maximum concrete depth 1220mm
220mm Cellcore HX B Under Beam (EPS) Concrete Piled Ground Beams - Grade 32/42 maximum concrete depth 1220mm
220mm Cellcore HX B Under Beam (EPS) Concrete Piled Ground Beams - Grade 32/42 maximum concrete depth 1220mm
220mm Cellcore HX B Under Beam (EPS) Concrete Piled Ground Beams - Grade 32/42 maximum concrete depth 1220mm
Cordek Cellcore HX B Under Beam EPS 220mm Ground Heave (Grade 32/42)
  • Used beneath reinforced concrete ground beams and pile caps
  • 220mm Cordek Cellcore HX B Under Beam EPS 32/42
  • Provides protection against the potential effects of ground heave
  • 220mm HX B Grade 32/42 - Max. Concrete Depth 1220mm
  • Lightweight Expanded Polystyrene (EPS) Concrete Block
Estimated delivery:
In Stock
£ 210.70
Ex VAT: £ 175.58
  • Brand: Cordek®
  • Model: 220mm (Grade 32/42)
  • Dimensions: 2,400mm x 1,200mm x 220mm
  • SKU: 32/42 max concrete depth 1220mm
  • Product code: P1-2864
  • MPN: 220mm HX B 32/42

Options available

Cordek Cellcore HX B Under Beam 220mm (Foundation Protection Board) 32/42 is specially designed eps block for use beneath reinforced concrete ground beams and pile caps to protect against the potential effects of ground heave.

HX B Under Beam (Ground Heave Solution) Grade 32/42 is calculated and calibrated for concrete thickness up to 1220mm (has been tested to achieve the specified performance characteristics).

220mm Cellcore Under Beam HX B is a lightweight but durable BBA certified ground heave solution which meets the NHBC’s (National House Building Council) Technical Standards.

Cellcore HX B is a 220mm thick moulded polystyrene block used to reduce the upward force transmitted to the structure from ground heave (Patented Product Technology).

The depth (85mm, 155mm or 220mm) of the Cellcore HX B panels should be determined by the heave potential of the soil.

One of great things about Cellcore HXB Under Beam is its very simple to work with and doesn't have much dust off when cut on site.

Under Beam EPS Grade 32/42 means that safe load is 24 kN/m2 and fail load is 32 kN/m2 (kN - kilonewtons per m2).

Safe load is a maximum safe force that a Cordek’s Cellcore HX B material offers without fear of breaking.

Fail load is not safe force and will cause permanent deformation of the HX B under beam eps board.

The shrinkage category of 220mm Cellcore HX B is classified as high and the plasticity index is 40-60.

The cost of manufacturing 220mm cellcore hxb is considered linearly proportional to its grade which is based on maximum concrete depth.

HX B Under Beam Grade 7/10 price is the lowest compared to the higher grades: 9/13, 13/18, 18/24, 24/32 and 32/42 (Cordek Cellcore price list is available upon request).

The standard range of cellcore products are available in a variety of depths and grades to suit most commonly encountered combinations of soil heave potential and concrete depth.

Variations of the HXB product are also available for use under pile caps and ground beams or alternatively where integral insulation, permanent formwork or passive gas venting is required.


Cordek Cellcore 220mm HX B Under Beam Installation Guide:

 · The procedure for installing Cellcore HX B EPS block is straightforward.

 · Please ensure that Cellcore Under Beam Boards are placed upon a suitable firm and level surface. 

 · Typically a layer of concrete blinding beneath the HX B panels is recommended.

 · The lightweight but durable polystyrene panels can be easily laid by one person. 

 · Where they are required to be cut this can be carried out using a fine tooth saw or hot wire cutter.


Storage and Handling:

All products are delivered in a polythene wrapping and are clearly labelled. 

Both packs of Cellcore and individual panels can be manually handled and offloaded upon delivery, taking in to account any site specific manual handling regulations.

No further storage requirements are needed as the product is unaffected by both UV light and water.


220mm HX B Under Beam Features:

 · BBA certified product

 · Reduces the upward force transmitted to the structure from ground heave

 · Wide range of profiles and grades to suit most applications

 · Meets the NHBC’s Technical Standards

 · Moulded production for enhanced and consistent performance

 · Available with integral permanent formwork

 · Patented Product Technology


*Further information may be found in our Downloads section.

Fairly easy access to all PDF files.

Datasheet ǀ Declaration of Performance - DoP ǀ BBA Certificate ǀ Installation Guide ǀ Certificates ǀ Brochure ǀ SPEC Sheet 


*Special Product - Non returnable cancelable.

Board covarage 2.88 m2
Length 2400mm
Material (EPS) Expanded Polystyrene
Thickness 220mm
Width 1200mm
Shipping method Rigid Vehicle ǀ Courier
Grade 32/42
Applications Ground Beams and Pile Caps
BBA Certified Yes
Maximum depth of concrete 1220mm
ETA Notification Yes
Features Protect against the potential effects of ground heave
Safe load 32 kN/m2
Shrinkage Category High
Manufacturer Cordek Cellcore HXB®
Plasticity Index 40-60
Fail load 42 kN/m2

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We deliver insulation materials to Mainland UK only. Deliveries to Highlands, Northern Ireland, Isle of Wight etc.. might be possible at additional cost.
We offer free delivery on most of the orders above £300 (excluding VAT) (except special products - shipping cost via courier - products marked ''Request A Quote'')

Delivery of some insulation materials might be extended due to the current situation (Covid-19, stock shortages, allocations).
If you need materials quickly please contact us - we will do our best to help you source materials needed.

We do not deliver on weekends and bank holidays. Sometimes we can deliver on Saturdays - please check with us before placing the order.
If you need any further information please contact us tel. 02081910776

We can help to calculate price per m2 or linear meter (one meter in length) cost, please just contact us via phone 02081910776, email or live chat. Alternatively, you can work it out yourself quickly and easily: to get cost per meter square please divide price shown in orange area by ''Required area (m2)'' Example price of £28.80 divided by board coverage 2.88m2 = cost of £10.00 per m2.


No matter whether you choose a local installer or a national company, there’s a few tips to help you find the right installer for your home insulation improvements, such as asking for recommendations and making sure that they’re part of a certification scheme. This makes sure that they have the right skills and standards of workmanship to carry out the installation, and you can be sure that they know exactly what they are doing.


1. Thermal inspection picture in portfolio

It’s worth seeing a installer’s previous work. There’s no harm asking if you can see any properties nearby that they’ve installed insulation in. Best way would be to see Infrared Thermal Imaging Inspections. Thermal cameras spot small, but key changes in temperature in different areas of a house, identifying problematic areas that the human eye never could and some that a visual inspection could only hypothesize.

2. Reviews

Along with checking recommendations and previous work, finding reviews online can often be a great way to find out if they provide a good service or not. However, it’s best not to solely rely on reviews you may find or review websites, as there’s no controlling who writes them.

3. Compare prices

Comparing prices will also ensure companies can’t take advantage of you and give you a fair price. 

4. Word of Mouth

The best way to find a great insulation installer is through recommendations. Make sure you ask friends and family. They will most likely give you their honest opinion and can tell you from first hand experience.


Whether you require a wall, cladding, external wall, loft or floor insulation fitted, you can find and hire your local insulation installers from popular UK web pages. A simple internet search will return thousands of potential installers near your area.



We are the stockist of construction materials and related products for both trade and DIY from most recognizable brands in the UK like Cordek, RCM, Promat, Rockwool, Isover, Celotex, Xtratherm, Ursa, Low-E, Cedral, Kingspan, Dufaylite, British Gypsum, K-rend, Ecotherm, Iko enertherm, Kay-Metzeler, Terrawool to allow you to complete your insulation job on time at competitive prices and the highest standards.


Whether you are a large company or a DIYer, if you need a large amount of insulation materials, we can offer quantity discounts at the best prices. Please contact us and our friendly customer service will try to find the best and cheapest solutions for you. We value your time and we will try to deliver the products as soon as possible at a reasonable price to your construction site or house. The UK's leading insulation supplier near you and your needs. Price List available upon request.
220mm Cellcore HX B Under Beam (EPS) Concrete Piled Ground Beams - Grade 32/42 maximum concrete depth 1220mm
Cordek Cellcore HX B Under Beam EPS 220mm Ground Heave (Grade 32/42)
£ 210.70