300mm Cellcore HX Plus Concrete Floor Slab Insulation combines ground heave protection with thermal performance when placed beneath reinforced concrete floors. The product features a cellular Expanded Polystyrene core bonded to a Filcor insulation layer and covered with a protective polypropylene sheet. Each board is precision-engineered and tested to deliver consistent, reliable performance across all applications.
Brand: Cordek®
Model: 300mm Cellcore HX Plus
Thickness: 300mm
Length: 2400mm
Width: 1200mm
Board coverage: 2.88m2
Available Grades: 7/10, 9/13, 13/18, 18/24, 24/32
Dimensions: 2,400mm x 1,200mm x 300mm
Beams Widths: 2400mm x 1200mm to 300mm (in 25mm increments)
Material: EPS Insulation ǀ Filcor ǀ Polypropylene
Shipping method: Rigid Vehicle ǀ Courier
Applications: Reinforced concrete floor slabs
BBA Certified: Yes (no.11/4862)
Maximum depth of concrete: 220mm
Features: Insulated Heave Protection Board
Safe load: 7 kN/m2
Shrinkage Category: Low
Manufacturer: Cordek Cellcore HX PLUS®
The 300mm Cellcore HX Plus can be manufactured in custom shapes, sizes and profiles with quick turnaround times. We offer multiple material grades with varying compressive strengths to suit your project's loading needs whilst delivering excellent value for money.
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Standard products come in various depths and grades to address typical combinations of soil heave risk, concrete thickness and U-value specifications.
300mm Cellcore HX Plus is designed for installation beneath reinforced concrete floor slabs, providing insulated ground heave protection for your foundation.
To establish the right product specification, first determine the appropriate 300mm Cellcore HX depth and grade to manage potential ground heave whilst supporting structural loads. Next, calculate the required Filcor insulation thickness to achieve your target U-value performance.
Browse our full Cordek range and filter by thickness or coverage using the left-hand menu. For advice on product suitability or to request a bulk discount quotation, contact us on +4402038839057, email sales@insulationbee or use Live Chat - Competitive UK Insulation board Pricing.













