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UNDER BEAM VOID FORMER

UNDER BEAM     

Under beam such as Cordek® Cellcore HX B, Max-frank Pecavoid® Plus+, RD, C or Jablite® is a compressible lightweight expanded polystyrene (EPS) block designed for use beneath reinforced concrete ground beams and pile caps to protect against the potential effects of ground heave.

This block features molded cellular legs and a twin-fluted polypropylene top. The legs, made of EPS with drainage holes, allow the product's use in areas with high water tables or coastal settings. That way you can be sure that the legs coincide with where the top of the formwork meets and we don't experience any of the legs breaking off in the product overturning in the bottom of the trench. 


UNDER BEAM SIZES

Under beam void former is available in strips 2400mm long and widths from 300 to 1200mm in increments of 25mm to suit the associated beam. Anti-heave boards are available in a variety of depths:

  • Cordek®  85mm | 155mm | 220mm and grades 7/10 | 9/13 | 13/18 | 18/24 | 24/32 | 24/32. 
  • Max-frank Pecavoid® Plus+  8/12 | 9/13 | 10/15 | 13/19,
  • Max-frank Pecavoid® RD 15/22 | 18/24 | 24/32 | 30/40
  • Max-frank Pecavoid® C 25/35 | 30/40 | 35/45 | 40/50 | 45/55 | 50/65,
  • Jablite®  7/10 | 9/13 | 10/15 | 13/18 | 18/24 | 24/32 | 30/40 | 40/50 | 50/65

One of great things about anti-heave Under Beam sheet is it is very simple to work with and doesn't have much dust off when cut on site. Either the 155mm or 220mm depth under beams are the most commonly used in the UK. It is closely related to the large clay content in the south of the country (high shrinkage category).


UNDER BEAM PRICE

The pricing structure varies based on different grades for the HX B Under Beam. Notably, the Grade 7/10 stands out as the most cost-effective option when compared to the higher-grade variations such as 9/13, 13/18, 18/24, 24/32, and 32/42. While the Grade 7/10 for HX B Under Beam stands as the most cost-effective option, opting for higher grades may offer enhanced protection, particularly in areas prone to clay-related issues. Opting for the highest available grade almost always assures us of choosing the right product, but it usually comes with higher purchasing costs. It's crucial to remember that constructing a building's foundation is a one-time task done over many years, and any mistakes in this process can lead to a construction disaster.

It's important to note that the Cordek® Cellcore price list is available upon request, providing flexibility for potential customers to explore different options and make informed decisions based on their specific requirements and budget considerations.


HOW TO UNDERSTAND THE DIFFERENCES BETWEEN UNDER BEAM GRADES?

The appropriate product grade is selected according to the maximum thickness of wet concrete that the product will be required to support during construction of the project. The appropriate product depth is selected such that its specified compression under fail-load is equal to, or greater than, the maximum anticipated ground movement owning to clay heave as established from site investigations.

Grades are specially calculated and calibrated for deformation of EPS under loading. Each grade must be adequate to take the additional 50mm concrete load.

Below you will find a list of available grades from companies in the UK:

  • 7/10 grade | 7 kN/m2 (safe load) | 10 kN/m2 (fail load) | Concrete Depth 100mm - 220mm | Cordek® HX B, Jablite®
  • 8/12 grade | 8 kN/m2 (safe load) | 12 kN/m2 (fail load) | Concrete Depth 100mm - 260mm | Max-frank Pecavoid® Plus+
  • 9/13 grade | 9 kN/m2 (safe load) | 13 kN/m2 (fail load) | Concrete Depth 261mm - 300mm | Cordek®, Max-frank Pecavoid® Plus+, Jablite®
  • 10/15 grade | 10 kN/m2 (safe load) | 15 kN/m2 (fail load) | Concrete Depth 301mm - 340mm | Max-frank Pecavoid® Plus+, Jablite®
  • 13/18 grade | 13 kN/m2 (safe load) | 18 kN/m2 (fail load) | Concrete Depth 341mm - 460mm | Cordek® HX B, Jablite®
  • 13/19 grade | 13 kN/m2 (safe load) | 19 kN/m2 (fail load) | Concrete Depth 341mm - 460mm | Max-frank Pecavoid® Plus+
  • 15/22 grade | 15 kN/m2 (safe load) | 22 kN/m2 (fail load) | Concrete Depth 461mm - 540mm | Max-frank Pecavoid® RD
  • 18/24 grade | 18 kN/m2 (safe load) | 24 kN/m2 (faill oad) | Concrete Depth 541mm - 660mm | Cordek® , Max-frank Pecavoid® RD, Jablite®
  • 24/32 grade | 24 kN/m2 (safe load) | 32 kN/m2 (fail load) | Concrete Depth 601mm - 900mm | Cordek® , Max-frank Pecavoid® RD, Jablite®
  • 25/35 grade | 25 kN/m2 (safe load) | 35 kN/m2 (fail load) | Concrete Depth 901mm - 940mm | Max-frank Pecavoid® C, Pecavoid® RD
  • 30/40 grade | 30 kN/m2 (safe load) | 40 kN/m2 (fail load) | Concrete Depth 941mm - 1140mm | Cordek® Cellcore HG, Pecavoid® C, Jablite®
  • 32/42 grade | 32 kN/m2 (safe load) | 42kN/m2 (fail load) | Concrete Depth 941mm - 1220mm | Cordek® Cellcore HX B
  • 35/45 grade | 35 kN/m2 (safe load) | 45 kN/m2 (fail load) | Concrete Depth 1141mm - 1340mm | Max-frank Pecavoid® C
  • 40/50 grade | 40 kN/m2 (safe load) | 50 kN/m2 (fail load) | Concrete Depth 1341mm - 1540mm | Cordek® Cellcore HG, Pecavoid® C, Jablite®
  • 45/55 grade | 45 kN/m2 (safe load) | 55 kN/m2 (fail load) | Concrete Depth 1541mm - 1740mm | Max-frank Pecavoid® C
  • 50/65 grade | 50 kN/m2 (safe load) | 65 kN/m2 (fail load) | Concrete Depth 1741mm - 1940mm | Cordek® Cellcore HG, Pecavoid® C, Jablite®

 

UNDER BEAM GRADES EXPLANATION

Safe load – sometimes stated as the Normal Working Load (NWL) is the maximum safe force that a HX B material offers without fear of breaking. Remember the safe load is the maximum load!

Failure load – load at which the under beam will fail (permanent deformation).

 


UNDER BEAM MADE BY CORDEK®

Cellcore under beam used to be called CC*. Its grades were also different. 

*Cellcore CC has been discontinued and is no longer available. Therefore it is used for reference only.

CC performed in grades (under beam):


100mm depth

8/12 - 270mm (max concrete thickness)
10/15 - 350mm (max concrete thickness)
15/22 - 550mm (max concrete thickness)
20/30 - 770mm (max concrete thickness)


175mm depth

8/12 - 270mm (max concrete thickness)
10/15 - 350mm (max concrete thickness)
15/22 - 550mm (max concrete thickness)
20/30 - 770mm (max concrete thickness)


250mm depth

8/12 - 270mm (max concrete thickness)
10/15 - 350mm (max concrete thickness)
15/22 - 550mm (max concrete thickness)
20/30 - 770mm (max concrete thickness)


300mm depth

8/12 - 270mm (max concrete thickness)
10/15 - 350mm (max concrete thickness)
15/22 - 550mm (max concrete thickness)
20/30 - 770mm (max concrete thickness)


cellcore cc and cp grades

 

CELLCORE HX B UNDER BEAM

CC under beam have been upgraded to Cellcore HX B.

Below you will find available grades and their corresponding maximum loads:


85mm  CELLCORE UNDER BEAM depth

7/10 – max concrete depth 220mm

9/13 – max concrete depth 300mm

13/18 – max concrete depth 460mm

18/24 – max concrete depth 660mm

24/32 – max concrete depth 900mm

32/42 – max concrete depth 1220mm


155mm CELLCORE UNDER BEAM depth

7/10 – max concrete depth 220mm

9/13 – max concrete depth 300mm

13/18 – max concrete depth 460mm

18/24 – max concrete depth 660mm

24/32 – max concrete depth 900mm

32/42 – max concrete depth 1220mm


220mm CELLCORE UNDER BEAM depth

9/13 – max concrete depth 300mm

13/18 – max concrete depth 460mm

18/24 – max concrete depth 660mm

24/32 – max concrete depth 900mm

32/42 – max concrete depth 1220mm


HOW DO I KNOW WHAT DEPTH OF UNDER BEAM DO I NEED?

Essentially it is a very simple product to specify. Depth of the product is in line with the amount of anticipated heave (potential for ground movement). The depth of concrete placed above panels must not exceed that stated in the relevant product literature (grade). The depth (85mm, 155mm or 220mm) of the under beam panel should be determined by the heave potential of the soil (NHBC shrinkage category). There are 3 potential volume soil plasticity indexes:

  • 10-20 Low
  • 20-40 Medium
  • 40-60 High

The depth of the under beam sheet should be determined by the heave potential of the soil, as detailed in Table 1 below. Further guidance on predicted ground movements in shrinkable soils is given in NHBC Standards 2021 Chapter 4.2

Table 1

Results of the Soil Analysis NHBC Category Predicted Ground Movement  Depth  'Equivalent Void'
Plasticity Index Shrinkage Category Void Dimension (mm) HX B (mm)
10-20 Low 50 85
20-40 Medium 100 155
40-60 High 150 220

 

 

 

 

 

 

 

 

 

influence factors and required void former depth diagram

 

PLASTICITY INDEX SIMPLE EXPLANATION

Plasticity Index (PL) is a measure of Plasticity of the Soil. 

In order to find PL, we have to find LL & PL.

Liquid Limit (LL) - The water content at which the soil will have very less shear strength. (The water content at which the flow characteristics are introduced in the soil, almost it can flow).

Plastic Limit (PL) –The water content at which a thread of soil with 3mm diameter begins to crumble. (The water content at which the soil starts to behave as plastic).

 

 Plasticity Index (PL) = Liquid Limit (LL) - Plastic Limit (PL) 

 

For more information click here

For Plasticity Index calculator click here


 


UNDER BEAM INSTALLATION

Under beam should be placed on a firm, level surface and the bottom of the excavation properly compacted and blinded with a layer of concrete or sand/cement blinding. Panels should be covered with a 50mm thickness of concrete blinding where heavy reinforcement is proposed or where the reinforcement will be subjected to significant point loads from traffic or other imposed loading.

For piled ground beams, the top of each pile should be trimmed so that it extends slightly above the proposed underside of the ground beam. Each pile should penetrate the void former to allow for an approximate 50mm thickness of concrete blinding on top where applicable and a keying depth which is in accordance with the engineer's design. When required, the product can be cut to shape with a fine-toothed saw.

under beam void former

Picture credit: directpiling.co.uk

Care should be taken to ensure that, after cutting, exposed ends of the cellular stiffening ribs do not exceed a maximum length of 50mm. Joints between under beam panels should be sealed with formwork tape or a DPM (Damp Proof Membrane) layer. Reinforcement should be fixed and adequately supported to ensure that the correct depth of concrete cover is achieved and to ensure that the maximum imposed load beneath each support is appropriate to the grade of sheet being used.

Concrete should be placed with care to avoid overloading the under beam panels. If the depth of concrete proposed exceeds that stated for the panel type being used, multiple pours may be considered providing that the initial pour does not exceed the maximum permissible depth allowed and the load from subsequent pours is transferred to the foundations and not the sheets. Any necessary cutting should be kept to a minimum. It is recommended that the under beam should have at least three legs in each direction to remain structurally sound.

under beam installation diagram


WHAT THE CONTRACTORS ON SITE WOULD BENEFIT BY USING UNDER BEAM AS A MATERIAL?

One of great things about under beam is it’s very simple to work with and doesn't have much dust off when cutted on site. Each grade has a color code. They are labeled to easily find on site which grade goes in which area.

 


CORDEK® SHEETS vs MAX-FRANK PECAVOID® vs JABLITE® GROUND HEAVE PROTECTION

Generally speaking there is not much difference between those 3 brands. Cellcore Cordek under beam is manufactured from EPS moulded into a hexagonal cellular compressible base for use under reinforced concrete ground beams, with a 5mm thick top of twin-wall polypropylene associated sheet.

Pecavoid® range is the new and improved ground heave solution from MAX FRANK. Unlike Cordek® sheets, Pecavoid® range comes with a square shaped EPS legs covered with a yellow 4.5mm polypropylene top. 

Cordek® sheets grades are color coded, Max-frank are labeled - last 4 digit numbers indicating grade. All of the ground heave protection boards have a BBA certificate and meet NHBC Standards. 

All Jablite Ground Heave Protection boards are supplied with a black 5mm bonded polypropylene top sheet in 300, 450 and 600mm pre-cut boards as standard. Similar to Cordek® or Max-frank® products, Jablite® Expanded Polystyrene (EPS) core is a great alternative to Cordek®, designed to include drainage slots in every node (where four faces meet). The slots allow water that could be trapped in the collapsed cells to escape as the board compresses.

 

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detail

 

 

 

 

 

 

 

 

 

100mm Cellcore HG 30/40 Ground Heave Protection EPS
PRODUCT DISCONTINUED.
REPLACED BY
CELLCORE 90mm HX S 32/42
Brand: Cordek® Model: 100mm HG Grade 30/40
100mm Cellcore HG Grade 30/40 Ground Heave Protection EPS is a lightweight expanded polystyrene insulation board used in ground heave applications where the specification of the project mean that the standard Cellcore HX S Under Floor Slabs and Cellcore HX B Under Ground Beams products are not suita..
  • 100mm Cellcore HG Grade 30/40
  • Lightweight expanded polystyrene (EPS)
  • HG 30/40 for concrete thickness up to 1140mm
  • Under Floor Slabs, Ground Beams and Pile Caps
  • Safe load is 30 kN/m2 and Fail load is 40 kN/m2
£ 190.25
Ex Tax:£ 158.54
Estimated delivery: 3-5 working days
Brand: Cordek® Model: 135mm Cellvent HX (Grade 7/10)
135mm Cellcore Cellvent HX Grade 7/10 combines the benefits of the Cellcore HX range with Ventform to alleviate the effects of ground heave whilst also providing an excellent gas venting medium. Cellvent HX is available in a range of specifications and can be used in conjunction with gas membrane..
  • 135mm Cordek Cellcore Cellvent HX Cellular EPS Void Former
  • Cellvent HX Grade 7/10 Maximum Concrete Depth 220mm
  • Reinforced ground floor slabs where subsidence is not expected
  • Used to alleviate the effects of ground heave and gas venting
  • Combined ground heave protection and passive gas venting system
£ 180.43
Ex Tax:£ 150.36
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 155x600x2400mm HX B Grade 7-10
HX B Under Beam 2400x600x155mm Grade 7-10, an unique EPS based board with hollow core and moulded legs used beneath reinforced concrete ground beams and pile caps. Cellcore HX B Grade 7-10 is fully tested, calculated and calibrated for concrete thickness up to 220mm to protect ground beams agains..
  • 155mm thick Cellcore Under Beam HX B Board cut to 600mm widths
  • HX B Ground Beams Grade 7-10 max. concrete depth up to 220mm
  • Protects ground beams against the potential effects of ground heave
  • Used beneath reinforced concrete ground beams and pile caps
  • Special hollow construction expanded polystyrene (EPS) block
£ 65.88
Ex Tax:£ 54.90
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 155mm (Grade 7/10)
155mm Cordek Cellcore HX B Under Beam 7/10 is a concrete ground beam protection EPS block designed for use beneath reinforced concrete ground beams and pile caps to protect against the potential effects of ground heave.  Cellcore HX B Grade 7/10 is calculated and calibrated for concrete thickness..
  • 155mm Cellcore HX B Under Beam EPS
  • Cellcore HX B - Grade 7/10
  • Maximum Concrete Depth 220mm
  • EPS Ground Beams Protection
  • BBA Certified Ground Heave Solutions
£ 124.97
Ex Tax:£ 104.14
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 220mm (Grade 7/10)
Cordek Cellcore 220mm HX B Under Beam 7/10 is a lightweight block designed for use beneath reinforced concrete ground beams and pile caps to protect against the potential effects of ground heave.  HX B (Concrete Ground Beams Protection) Grade 7/10 is calculated and calibrated for concrete thickne..
  • 220mm Cellcore HX B Under Beam EPS
  • Cellcore HX B - Grade 7/10
  • Maximum Concrete Depth 220mm
  • EPS Ground Beams Protection
  • BBA Certified Ground Heave Solutions
£ 133.67
Ex Tax:£ 111.39
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 220x600x2400mm HX B Grade 7-10
Cellcore HX B Under Beam 7-10 is a 220mm thick, 600mm wide and 2400mm long EPS block with hollow core used beneath reinforced concrete ground beams and pile caps. Cordek HX B for Ground Beams Grade 7-10 is calculated and calibrated for concrete thickness up to 220mm to protect ground beams agains..
  • 220mm thick Cellcore Under Beam HX B Board cut to 600mm widths
  • HX B Ground Beams Grade 7-10 max. concrete depth up to 220mm
  • Protects ground beams against the potential effects of ground heave
  • Used beneath reinforced concrete ground beams and pile caps
  • Special hollow construction expanded polystyrene (EPS) block
£ 69.54
Ex Tax:£ 57.95
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 85mm (Grade 7/10)
85mm Cordek Cellcore HX B Under Beam 7/10 is a lightweight enhanced EPS (expanded polystyrene) board designed for use beneath reinforced concrete ground beams and pile caps to protect against the potential effects of ground heave.  Grade 7/10 is calculated and calibrated for concrete thickness up..
  • 85mm Cellcore HX B Under Beam
  • EPS HX B - Grade 7/10
  • Maximum Concrete Depth 220mm
  • Concrete Ground Beam Protection
  • BBA certified ǀ Highly-durable
£ 107.08
Ex Tax:£ 89.23
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 85x600x2400mm HX B Grade 7-10
85mm x 600mm x 2400mm Cordek Cellcore HX B Under Beam Grade 7-10 is a special hollow construction polystyrene block used beneath reinforced concrete ground beams and pile caps. Cellcore HX B Grade 7-10 is fully tested, calculated and calibrated for concrete thickness up to 220mm to protect ground..
  • 85mm thick Cellcore Under Beam HX B Board cut to 600mm widths
  • HX B Ground Beams Grade 7-10 for concrete thickness up to 220mm
  • Protects ground beams against the potential effects of ground heave
  • Used beneath reinforced concrete ground beams and pile caps
  • Special hollow construction expanded polystyrene (EPS) block
£ 53.88
Ex Tax:£ 44.90
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 100mm HG Grade 40/50
100mm Cellcore HG Grade 40/50 is a lightweight expanded polystyrene (EPS) insulation board designed for use in ground heave protection applications where the specification of the project mean that the standard Cellcore HX S Under Floor Slabs and Cellcore HX B Under Ground Beams products are not suit..
  • 100mm Cellcore HG Grade 40/50
  • Lightweight expanded polystyrene (EPS)
  • HG 40/50 for concrete thickness up to 1540mm
  • Under Floor Slabs, Ground Beams and Pile Caps
  • Safe load is 40 kN/m2 and Fail load is 50 kN/m2
£ 203.86
Ex Tax:£ 169.88
Estimated delivery: 3-5 working days
Brand: Cordek® Model: 135mm Cellvent HX (Grade 9/13)
135mm Cellvent HX Grade 9/13 is a lightweight cellular void former made of Cellcore HX range with Ventform to alleviate the effects of ground heave whilst also providing an excellent gas venting. Cellvent HX is available in a range of specifications and can be used in conjunction with gas membran..
  • 135mm Cordek Cellcore Cellvent HX Cellular EPS Void Former
  • Cellvent HX Grade 9/13 Maximum Concrete Depth 300mm
  • Reinforced ground floor slabs where subsidence is not expected
  • Used to alleviate the effects of ground heave and gas venting
  • Combined ground heave protection and passive gas venting system
£ 186.66
Ex Tax:£ 155.55
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 155mm (Grade 9/13)
155mm Cordek Cellcore HX B Under Beam Block (Concrete Ground Beams Protection) 9/13 is used beneath reinforced concrete ground beams and pile caps to protect against the potential effects of ground heave.  HX B Grade 9/13 is calculated and calibrated for concrete thickness up to 300mm (has been t..
  • 155mm Cellcore HX B Under Beam EPS
  • Cellcore HX B - Grade 9/13
  • Maximum Concrete Depth 300mm
  • EPS Ground Beams Protection
  • BBA certified Ground Heave Solutions
£ 127.36
Ex Tax:£ 106.13
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 220mm (Grade 9/13)
220mm Cordek Cellcore HX B Under Beam 9/13 is an expanded polystyrene block designed for use beneath reinforced concrete ground beams and pile caps to protect against the potential effects of ground heave.  HX B (Concrete Ground Beams Protection Block) Grade 9/13 is calculated and calibrated for ..
  • 220mm Cellcore HX B Under Beam EPS
  • Cellcore HX B - Grade 9/13
  • Maximum Concrete Depth 300mm
  • EPS Ground Beams Protection
  • BBA Certified Ground Heave Solutions
£ 137.08
Ex Tax:£ 114.23
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 220x600x2400mm HX B Grade 9-13
220x600x2400mm HX B Under Beam 9-13, used beneath reinforced concrete ground beams and pile caps, a special hollow core construction EPS block with moulded legs. Cordek Cellcore HX B Grade 9-13 is calculated and calibrated for concrete thickness up to 300mm to protect ground beams against the eff..
  • 220mm thick Cellcore Under Beam HX B Board cut to 600mm widths
  • HX B Ground Beams Grade 9-13 max. concrete depth up to 300mm
  • Protects ground beams against the potential effects of ground heave
  • Used beneath reinforced concrete ground beams and pile caps
  • Special hollow construction expanded polystyrene (EPS) block
£ 71.88
Ex Tax:£ 59.90
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 85x600x2400mm HX B Grade 9-13
85mm Cordek Cellcore HX B Under Beam Grade 9-13 is a 2400mm long by 600mm wide hollow core EPS block used beneath reinforced concrete ground beams and pile caps. Cellcore HX B Grade 9-13 is fully tested, calculated and calibrated for concrete thickness up to 300mm to protect ground beams against ..
  • 85mm thick Cellcore Under Beam HX B Board cut to 600mm widths
  • HX B Ground Beams Grade 9-13 for concrete thickness up to 300mm
  • Protects ground beams against the potential effects of ground heave
  • Used beneath reinforced concrete ground beams and pile caps
  • Special hollow construction expanded polystyrene (EPS) block
£ 57.00
Ex Tax:£ 47.50
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 85mm (Grade 9/13)
85mm Cordek Cellcore HX B Under Beam Board 9/13 is used beneath reinforced concrete ground beams and pile caps to protect against the potential effects of ground heave.  Grade 9/13 is calculated and calibrated for concrete thickness up to 300mm (has been tested to achieve the specified performanc..
  • 85mm Cellcore HX B Under Beam
  • EPS HX B - Grade 9/13
  • Maximum Concrete Depth 300mm
  • EPS Ground Beams Protection
  • BBA Certified Ground Heave Solutions
£ 111.16
Ex Tax:£ 92.63
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 155x600x2400mm HX B Grade 9-13
155mm x 600mm x 2400mm Cordek Cellcore HX B Under Beam Grade 9-13 is a hollow core construction EPS block used beneath reinforced concrete ground beams and pile caps. Cellcore HX B Grade 9-13 is fully tested, calculated and calibrated for concrete thickness up to 300mm to protect ground beams aga..
  • 155mm thick Cellcore Under Beam HX B Board cut to 600mm widths
  • HX B Ground Beams Grade 9-13 max. concrete depth up to 300mm
  • Protects ground beams against the potential effects of ground heave
  • Used beneath reinforced concrete ground beams and pile caps
  • Special hollow construction expanded polystyrene (EPS) block
£ 67.80
Ex Tax:£ 56.50
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 100mm HG Grade 50/65
100mm Cellcore HG Grade 50/65 is a lightweight expanded polystyrene (EPS) insulation board designed for use in ground heave protection applications where the specification of the project mean that the standard Cellcore HX S Under Floor Slabs and Cellcore HX B Under Ground Beams products are not suit..
  • 100mm Cellcore HG Grade 50/65
  • Lightweight expanded polystyrene (EPS)
  • HG 50/65 for concrete thickness up to 1940mm
  • Under Floor Slabs, Ground Beams and Pile Caps
  • Safe load is 50 kN/m2 and Fail load is 65 kN/m2
£ 237.85
Ex Tax:£ 198.21
Estimated delivery: 3-5 working days
Brand: Cordek® Model: 135mm Cellvent HX (Grade 13/18)
135mm Cellvent HX Grade 13/18 is designed for use under suitably reinforced ground floor slabs where subsidence is not expected, combining the benefits of the Cellcore HX range with Ventform. Cellvent HX is available in a range of specifications and can be used in conjunction with gas membranes, ..
  • 135mm Cordek Cellcore Cellvent HX Cellular EPS Void Former
  • Cellvent HX Grade 13/18 Maximum Concrete Depth 460mm
  • Reinforced ground floor slabs where subsidence is not expected
  • Used to alleviate the effects of ground heave and gas venting
  • Combined ground heave protection and passive gas venting system
£ 192.92
Ex Tax:£ 160.77
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 155mm (Grade 13/18)
155mm Cordek Cellcore HX B Under Beam 13/18 is an expanded polystyrene (EPS) block designed for use beneath reinforced concrete ground beams and pile caps to protect against the potential effects of ground heave.  HX B Grade 13/18 is calculated and calibrated for concrete thickness up to 460mm (h..
  • 155mm Cellcore HX B Under Beam EPS
  • Cellcore HX B - Grade 13/18
  • Maximum Concrete Depth 460mm
  • EPS Ground Beams Protection
  • BBA Certified Ground Heave Solutions
£ 116.03
Ex Tax:£ 96.69
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 155x600x2400mm HX B Grade 13-18
HX B Under Beam Cordek Cellcore 155x600x2400mm Grade 13-18, a reinforced concrete ground beams and pile caps board, an EPS block with hollow core and moulded legs. Cellcore HX B Grade 13-18 is fully tested, calculated and calibrated for concrete thickness up to 460mm to protect ground beams again..
  • 155mm thick Cellcore Under Beam HX B Board cut to 600mm widths
  • HX B Ground Beams Grade 13-18 max. concrete depth up to 460mm
  • Protects ground beams against the potential effects of ground heave
  • Used beneath reinforced concrete ground beams and pile caps
  • Special hollow construction expanded polystyrene (EPS) block
£ 69.00
Ex Tax:£ 57.50
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 220mm (Grade 13/18)
220mm Cordek Cellcore HX B Under Beam Board 13/18 is used beneath reinforced concrete ground beams and pile caps to protect against the potential effects of ground heave.  Under Beam HX B Grade 13/18 is calculated and calibrated for concrete thickness up to 460mm (has been tested to achieve the s..
  • 220mm Cellcore HX B Under Beam
  • HX B - Grade 13/18
  • Maximum Concrete Depth 460mm
  • EPS Ground Beams
  • BBA certified
£ 143.46
Ex Tax:£ 119.55
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 220x600x2400mm HX B Grade 13-18
HX B Under Beam 2400x600x220mm 13-18, an expanded polystyrene (EPS) void former with hollow core and moulded legs used beneath reinforced concrete ground beams. Cordek Cellcore HX B Grade 13-18 is calculated and calibrated for concrete thickness up to 460mm to protect ground beams against the eff..
  • 220mm thick Cellcore Under Beam HX B Board cut to 600mm widths
  • HX B Ground Beams Grade 13-18 max. concrete depth up to 460mm
  • Protects ground beams against the potential effects of ground heave
  • Used beneath reinforced concrete ground beams and pile caps
  • Special hollow construction expanded polystyrene (EPS) block
£ 74.10
Ex Tax:£ 61.75
Estimated delivery: 3-5 working days
Brand: Cordek® Model: 85mm (Grade 13/18)
85mm Cordek Cellcore HX B Under Beam EPS Board 13/18 is used beneath reinforced concrete ground beams and pile caps to provide protection against the potential effects of ground heave.  Cellcore HX B Grade 13/18 is calculated and calibrated for concrete thickness up to 460mm (has been tested to a..
  • 85mm Cellcore HX B Under Beam EPS
  • Cellcore HX B - Grade 13/18
  • Maximum Concrete Depth 460mm
  • EPS Ground Beams Protection
  • BBA Certified Ground Heave Solutions
£ 113.77
Ex Tax:£ 94.81
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 85x600x2400mm HX B Grade 13-18
85x600x2400mm HX B Under Beam Grade 13-18 is used beneath reinforced concrete ground beams and pile caps, an unique hollow construction polystyrene block with moulded legs. Cellcore HX B Grade 13-18 is fully tested, calculated and calibrated for concrete thickness up to 460mm to protect ground be..
  • 85mm thick Cellcore Under Beam HX B Board cut to 600mm widths
  • HX B Ground Beams Grade 13-18 for concrete thickness up to 460mm
  • Protects ground beams against the potential effects of ground heave
  • Used beneath reinforced concrete ground beams and pile caps
  • Special hollow construction expanded polystyrene (EPS) block
£ 59.88
Ex Tax:£ 49.90
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 135mm Cellvent HX (Grade 18/24)
135mm Cordek Cellvent HX Grade 18/24, an EPS void former used beneath reinforced concrete floor slabs to provide a combined ground heave protection and passive gas venting system. Cellvent HX is available in a range of specifications and can be used in conjunction with gas membranes, vent outlets..
  • 135mm Cordek Cellcore Cellvent HX Cellular EPS Void Former
  • Cellvent HX Grade 18/24 Maximum Concrete Depth 660mm
  • Reinforced ground floor slabs where subsidence is not expected
  • Used to alleviate the effects of ground heave and gas venting
  • Combined ground heave protection and passive gas venting system
£ 203.76
Ex Tax:£ 169.80
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 155mm (Grade 18/24)
Cordek Cellcore HX B Under Beam 18/24 is a 155mm thick polystyrene board used beneath reinforced concrete ground beams and pile caps to protect against the potential effects of ground heave.  HX B (Concrete Ground Beams Protection Block) Grade 18/24 is calculated and calibrated for concrete thick..
  • 155mm Cellcore HX B Under Beam EPS
  • Cellcore HX B - Grade 18/24
  • Maximum Concrete Depth 660mm
  • EPS Ground Beams Protection
  • BBA Certified Ground Heave Solution
£ 132.35
Ex Tax:£ 110.29
Estimated delivery: 5-7 working days
200mm Cellcore HG 30/40 Ground Heave Protection EPS
PRODUCT DISCONTINUED.
REPLACED BY
CELLCORE 160mm HX S 32/42
Brand: Cordek® Model: 200mm HG Grade 30/40
200mm Cellcore HG Grade 30/40 Ground Heave Protection EPS is a lightweight insulation board used in ground heave applications where the specification of the project mean that the standard Cellcore HX S Under Slab and Cellcore HX B Under Beam products are not suitable. Cellcore HG 30/40 Structural..
  • 200mm Cellcore HG Grade 30/40
  • Lightweight expanded polystyrene (EPS)
  • HG 30/40 for concrete thickness up to 1140mm
  • Under Floor Slabs, Ground Beams and Pile Caps
  • Safe load is 30 kN/m2 and Fail load is 40 kN/m2
£ 203.86
Ex Tax:£ 169.88
Estimated delivery: 3-5 working days
Brand: Cordek® Model: 220mm (Grade 18/24)
Cordek Cellcore HX B Under Beam 18/24 is a 220mm thick lightweight EPS (expanded polystyrene) block designed for use beneath reinforced concrete ground beams and pile caps to protect against the potential effects of ground heave.  HX B (Concrete Ground Beams Protection) Grade 18/24 is calculated ..
  • 220mm Cellcore HX B Under Beam EPS
  • Cellcore HX B - Grade 18/24
  • Maximum Concrete Depth 660mm
  • EPS Ground Beams Protection
  • BBA Certified Ground Heave Solutions
£ 147.59
Ex Tax:£ 122.99
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 220x600x2400mm HX B Grade 18-24
Cellcore HX B Under Beam 220x600x2400mm 18-24 is specially designed for reinforced concrete ground beams and pile caps, an EPS with hollow core and moulded legs. Cordek Cellcore HX B Grade 18-24 is calculated and calibrated for concrete thickness up to 660mm to protect ground beams against the ef..
  • 220mm thick Cellcore Under Beam HX B Board cut to 600mm widths
  • HX B Ground Beams Grade 18-24 max. concrete depth up to 660mm
  • Protects ground beams against the potential effects of ground heave
  • Used beneath reinforced concrete ground beams and pile caps
  • Special hollow construction expanded polystyrene (EPS) block
£ 75.60
Ex Tax:£ 63.00
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 85mm (Grade 18/24)
Cordek Cellcore HX B Under Beam 18/24 is a 85mm thick lightweight expanded polystyrene board designed for use beneath reinforced concrete ground beams and pile caps to protect against the potential effects of ground heave.  Cellcore HX B Grade 18/24 is calculated and calibrated for concrete thick..
  • 85mm Cellcore HX B Under Beam EPS
  • Cellcore HX B - Grade 18/24
  • Maximum Concrete Depth 660mm
  • EPS Ground Beams
  • BBA Certified Ground Heave Solutions
£ 119.16
Ex Tax:£ 99.30
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 155x600x2400mm HX B Grade 18-24
155x600x2400mm HX B Under Beam Grade 18-24 is used beneath reinforced concrete ground beams and pile caps, an unique hollow construction polystyrene block with moulded legs. Cellcore HX B Grade 18-24 is fully tested, calculated and calibrated for concrete thickness up to 660mm to protect ground b..
  • 155mm thick Cellcore Under Beam HX B Board cut to 600mm widths
  • HX B Ground Beams Grade 18-24 max. concrete depth up to 660mm
  • Protects ground beams against the potential effects of ground heave
  • Used beneath reinforced concrete ground beams and pile caps
  • Special hollow construction expanded polystyrene (EPS) block
£ 70.50
Ex Tax:£ 58.75
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 85x600x2400mm HX B Grade 18-24
HX B Under Beam 85mm x 2400mm x 600mm Grade 18-24 is an ultimate moisture resistant hollow construction EPS used beneath reinforced concrete ground beams and pile caps. Cellcore HX B Grade 18-24 is fully tested, calculated and calibrated for concrete thickness up to 660mm to protect ground beams ..
  • 85mm thick Cellcore Under Beam HX B Board cut to 600mm widths
  • HX B Ground Beams Grade 18-24 for concrete thickness up to 660mm
  • Protects ground beams against the potential effects of ground heave
  • Used beneath reinforced concrete ground beams and pile caps
  • Special hollow construction expanded polystyrene (EPS) block
£ 62.16
Ex Tax:£ 51.80
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 155mm (Grade 24/32)
155mm Cordek Cellcore HX B Under Beam EPS Block 24/32 is a special board designed for use beneath reinforced concrete ground beams and pile caps to protect against the potential effects of ground heave.  HX B (Concrete Piled Ground Beams Board) Grade 24/32 is calculated and calibrated for concret..
  • 155mm Cellcore HX B Under Beam EPS
  • Cellcore HX B - Grade 24/32
  • Maximum Concrete Depth 900mm
  • EPS Ground Beams Protection
  • BBA Certified Ground Heave Solutions
£ 137.35
Ex Tax:£ 114.46
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 155x600x2400mm HX B Grade 24-32
155mm Cordek Cellcore HX B for Ground Beams Grade 24-32 is a non-collapsible EPS void former board used beneath reinforced concrete ground beams and pile caps. Cellcore HX B Grade 24-32 is fully tested, calculated and calibrated for concrete thickness up to 900mm to protect ground beams against t..
  • 155mm thick Cellcore Under Beam HX B Board cut to 600mm widths
  • HX B Ground Beams Grade 24-32 max. concrete depth up to 900mm
  • Protects ground beams against the potential effects of ground heave
  • Used beneath reinforced concrete ground beams and pile caps
  • Special hollow construction expanded polystyrene (EPS) block
£ 71.88
Ex Tax:£ 59.90
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 200mm HG Grade 40/50
200mm Cellcore HG Grade 40/50 is a lightweight expanded polystyrene (EPS) insulation board designed for use in ground heave protection applications where the specification of the project mean that the standard Cellcore HX S Under Floor Slabs and Cellcore HX B Under Ground Beams products are not suit..
  • 200mm Cellcore HG Grade 40/50
  • Lightweight expanded polystyrene (EPS)
  • HG 40/50 for concrete thickness up to 1540mm
  • Under Floor Slabs, Ground Beams and Pile Caps
  • Safe load is 40 kN/m2 and Fail load is 50 kN/m2
£ 217.45
Ex Tax:£ 181.21
Estimated delivery: 3-5 working days
Brand: Cordek® Model: 205mm Cellvent HX (Grade 7/10)
205mm Cellvent HX Grade 7/10 used to limit the pressure exerted on in-situ reinforced suspended concrete floors or piled ground beams by expansion of clay soils (clay heave) or ground recovery. Cellvent HX is available in a range of specifications and can be used in conjunction with gas membranes..
  • 205mm Cordek Cellcore Cellvent HX Cellular EPS Void Former
  • Cellvent HX Grade 7/10 Maximum Concrete Depth 220mm
  • Reinforced ground floor slabs where subsidence is not expected
  • Used to alleviate the effects of ground heave and gas venting
  • Combined ground heave protection and passive gas venting system
£ 191.30
Ex Tax:£ 159.42
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 220mm (Grade 24/32)
220mm Cordek Cellcore HX B Under Beam (Concrete Ground Beams Protection Board) 24/32 is designed for use beneath reinforced concrete ground beams and pile caps to protect against the potential effects of ground heave.  HX B (Ground Heave Solution) Grade 24/32 is calculated and calibrated for conc..
  • 220mm Cellcore HX B Under Beam EPS
  • Cellcore HX B - Grade 24/32
  • Maximum Concrete Depth 900mm
  • EPS Ground Beams Protection
  • BBA Certified Ground Heave Solutions
£ 152.76
Ex Tax:£ 127.30
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 85mm (Grade 24/32)
85mm Cordek Cellcore HX B Under Beam 24/32 is an expanded polystyrene block designed for use beneath reinforced concrete ground beams and pile caps to protect against the potential effects of ground heave. Cellcore HX B Grade 24/32 is calculated and calibrated for concrete thickness up to 900mm (..
  • 85mm Cellcore HX B Under Beam EPS
  • BBA - HX B - Grade 24/32
  • Maximum Concrete Depth 900mm
  • EPS Ground Beams Protection
  • Ground Heave Solutions
£ 114.70
Ex Tax:£ 95.58
Estimated delivery: 7-12 working days
Brand: Cordek® Model: 85x600x2400mm HX B Grade 24-32
85mm HX B for Reinforced Concrete Ground Beams Grade 24-32 is a non-collapsible Cordek void former EPS board used beneath reinforced concrete ground beams and pile caps. Cellcore HX B Grade 24-32 is fully tested, calculated and calibrated for concrete thickness up to 900mm to protect ground beams..
  • 85mm thick Cellcore Under Beam HX B Board cut to 600mm widths
  • HX B Ground Beams Grade 24-32 for concrete thickness up to 900mm
  • Protects ground beams against the potential effects of ground heave
  • Used beneath reinforced concrete ground beams and pile caps
  • Special hollow construction expanded polystyrene (EPS) block
£ 64.20
Ex Tax:£ 53.50
Estimated delivery: 7-12 working days
Brand: Cordek® Model: 220x600x2400mm HX B Grade 24-32
220mm x 600mm x 2400mm Cellcore HX B Under Beam 24-32 is a special hollow core construction EPS block used beneath reinforced concrete ground beams and pile caps. Cordek Cellcore HX B Grade 24-32 is calculated and calibrated for concrete thickness up to 900mm to protect ground beams against the e..
  • 220mm thick Cellcore Under Beam HX B Board cut to 600mm widths
  • HX B Ground Beams Grade 24-32 max. concrete depth up to 900mm
  • Protects ground beams against the potential effects of ground heave
  • Used beneath reinforced concrete ground beams and pile caps
  • Special hollow construction expanded polystyrene (EPS) block
£ 78.60
Ex Tax:£ 65.50
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 155mm (Grade 32/42)
155mm Cellcore HX B Under Beam EPS Block 32/42 is a ground beam protection board designed for use beneath reinforced concrete ground beams and pile caps to protect against the potential effects of ground heave.  HX B Under Beam for Concrete Piled Ground Beams Grade 32/42 is calculated and calibra..
  • 155mm Cordek Cellcore HX B Under Beam EPS 32/42
  • 155mm HX B Grade 32/42 - Max. Concrete Depth 1220mm
  • Provides protection against the potential effects of ground heave
  • Lightweight Expanded Polystyrene (EPS) Concrete Block
  • Used beneath reinforced concrete ground beams and pile caps
£ 179.88
Ex Tax:£ 149.90
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 155x600x2400mm HX B Grade 32-42
Cordek HX B Under Beam (Grade 32-42) is a 155mm thick, 600mm wide and 2400mm long hollow core EPS block used beneath reinforced concrete ground beams and pile caps. Cellcore HX B Grade 32-42 is fully tested, calculated and calibrated for concrete thickness up to 1220mm to protect ground beams aga..
  • 155mm thick Cellcore Under Beam HX B Board cut to 600mm widths
  • HX B Ground Beams Grade 32-42 max. concrete depth up to 1220mm
  • Protects ground beams against the potential effects of ground heave
  • Used beneath reinforced concrete ground beams and pile caps
  • Special hollow construction expanded polystyrene (EPS) block
£ 89.88
Ex Tax:£ 74.90
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 200mm HG Grade 50/65
200mm Cellcore HG Grade 50/65 is a lightweight expanded polystyrene (EPS) insulation board designed for use in ground heave protection applications where the specification of the project mean that the standard Cellcore HX S Under Floor Slabs and Cellcore HX B Under Ground Beams products are not suit..
  • 200mm Cellcore HG Grade 50/65
  • Lightweight expanded polystyrene (EPS)
  • HG 50/65 for concrete thickness up to 1940mm
  • Under Floor Slabs, Ground Beams and Pile Caps
  • Safe load is 50 kN/m2 and Fail load is 65 kN/m2
£ 251.45
Ex Tax:£ 209.54
Estimated delivery: 3-5 working days
Brand: Cordek® Model: 205mm Cellvent HX (Grade 9/13)
205mm Cellvent HX Grade 9/13, an expanded polystyrene (EPS) cellular void former, for use in limiting the pressure exerted on in-situ reinforced suspended concrete floors or piled ground beams. Cellvent HX is available in a range of specifications and can be used in conjunction with gas membranes..
  • 205mm Cordek Cellcore Cellvent HX Cellular EPS Void Former
  • Cellvent HX Grade 9/13 Maximum Concrete Depth 300mm
  • Reinforced ground floor slabs where subsidence is not expected
  • Used to alleviate the effects of ground heave and gas venting
  • Combined ground heave protection and passive gas venting system
£ 195.50
Ex Tax:£ 162.92
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 85x600x2400mm HX B Grade 32-42
HX B Under Beam 2400x600x85mm Grade 32-42, an unique polystyrene based board with hollow core and moulded legs used beneath reinforced concrete ground beams and pile caps. Cellcore HX B Grade 32-42 is fully tested, calculated and calibrated for concrete thickness up to 1220mm to protect ground be..
  • 85mm thick Cellcore Under Beam HX B Board cut to 600mm widths
  • HX B Ground Beams Grade 32-42 for concrete thickness up to 1220mm
  • Protects ground beams against the potential effects of ground heave
  • Used beneath reinforced concrete ground beams and pile caps
  • Special hollow construction expanded polystyrene (EPS) block
£ 83.88
Ex Tax:£ 69.90
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 220x600x2400mm HX B Grade 32-42
220mm thick Cordek Cellcore HX B Under Beam 32-42 is a non-collapsible 600mm wide void former board used beneath reinforced concrete ground beams and pile caps. Cordek Cellcore HX B Grade 32-42 is calculated and calibrated for concrete thickness up to 1220mm to protect ground beams against the ef..
  • 220mm thick Cellcore Under Beam HX B Board cut to 600mm widths
  • HX B Ground Beams Grade 32-42 max. concrete depth up to 1220mm
  • Protects ground beams against the potential effects of ground heave
  • Used beneath reinforced concrete ground beams and pile caps
  • Special hollow construction expanded polystyrene (EPS) block
£ 107.88
Ex Tax:£ 89.90
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 85mm (Grade 32/42)
Cordek Cellcore HX B Under Beam 32/42 is a 85mm thick EPS block designed for use beneath reinforced concrete ground beams and pile caps to protect against the potential effects of ground heave. Cellcore HX B Grade 32/42 is calculated and calibrated for concrete thickness up to 1220mm (Tested to a..
  • 85mm Cordek Cellcore HX B Under Beam EPS 32/42
  • 85mm HX B Grade 32/42 - Max. Concrete Depth 1220mm
  • Lightweight Expanded Polystyrene (EPS) Concrete Block
  • Used beneath reinforced concrete ground beams and pile caps
  • Provides protection against the potential effects of ground heave
£ 160.08
Ex Tax:£ 133.40
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 220mm (Grade 32/42)
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 ..
  • 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
£ 210.70
Ex Tax:£ 175.58
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 205mm Cellvent HX (Grade 13/18)
205mm Cellvent HX Grade 13/18 is a cellular expanded polystyrene void former, used to limit the pressure exerted on in-situ reinforced suspended concrete floors or piled ground beams. Cellvent HX is available in a range of specifications and can be used in conjunction with gas membranes, vent out..
  • 205mm Cordek Cellcore Cellvent HX Cellular EPS Void Former
  • Cellvent HX Grade 13/18 Maximum Concrete Depth 460mm
  • Reinforced ground floor slabs where subsidence is not expected
  • Used to alleviate the effects of ground heave and gas venting
  • Combined ground heave protection and passive gas venting system
£ 202.02
Ex Tax:£ 168.35
Estimated delivery: 5-7 working days
Brand: Cordek® Model: 300mm HG Grade 30/40
300mm Cellcore HG Grade 30/40 Ground Heave Solution is a lightweight expanded polystyrene insulation board specially designed for use in ground heave protection applications where the specification of the project mean that the standard Cellcore Under Slab and Under Ground Beam products are not suita..
  • 300mm Cellcore HG Grade 30/40
  • Lightweight expanded polystyrene (EPS)
  • HG 30/40 for concrete thickness up to 1140mm
  • Under Floor Slabs, Ground Beams and Pile Caps
  • Safe load is 30 kN/m2 and Fail load is 40 kN/m2
£ 217.45
Ex Tax:£ 181.21
Estimated delivery: 3-5 working days
Brand: Cordek® Model: 205mm Cellvent HX (Grade 18/24)
205mm Cellvent HX Grade 18/24 is designed for use under suitably reinforced ground floor slabs where subsidence is not expected, combining the benefits of the Cellcore HX range with Ventform. Cellvent HX is available in a range of specifications and can be used in conjunction with gas membranes, ..
  • 205mm Cordek Cellcore Cellvent HX Cellular EPS Void Former
  • Cellvent HX Grade 18/24 Maximum Concrete Depth 660mm
  • Reinforced ground floor slabs where subsidence is not expected
  • Used to alleviate the effects of ground heave and gas venting
  • Combined ground heave protection and passive gas venting system
£ 210.30
Ex Tax:£ 175.25
Estimated delivery: 5-7 working days