10mm Grey Polystyrene (Graphite EPS) Board – External Wall Insulation (Single Board)
High-performance insulation solution for EWI systems – lightweight, durable, and energy-efficient graphite-enhanced EPS.
Product Specifications
Thickness: 10mm
Width: 500mm
Length: 1000mm
Coverage: 0.5 m² per board
Density: 15 kg/m³
Weight/m²: 1.5 kg
Thermal Conductivity (λ): 0.031 W/mK
R-Value: 3.03 m²K/W
Compressive Strength: 70 kPa
Water Vapour Resistivity: 20 MN·s/g·m
Fire Rating (Reaction to Fire): Class E (EN 13501-1)
Product Description
Our 100mm Grey Polystyrene (Graphite EPS) Board is a premium-quality expanded polystyrene insulation solution, designed specifically for External Wall Insulation (EWI) systems. Enhanced with high-purity graphite particles, this advanced insulation board delivers up to 20% improved thermal performance compared to standard white EPS of the same thickness.
The integrated graphite reflects radiant heat and improves the board’s thermal conductivity to just 0.031 W/mK, helping to reduce energy loss and maintain internal temperatures more effectively. The closed-cell structure traps air within millions of micro-cavities, providing superior resistance to heat transfer.
Key Features & Benefits
✅ Superior Insulation Performance – Graphite-enhanced EPS provides higher thermal efficiency
✅ Lightweight & Easy to Install – Simple to cut and shape with a sharp knife
✅ Moisture Resistant & Durable – Resists mold growth and degradation
✅ Eco-Friendly – Low environmental impact, 100% recyclable material
✅ Cost-Effective Solution – Ideal for large-scale EWI systems or small retrofit projects
Recommended Applications
External wall insulation (EWI) for both rendered and unrendered masonry
Timber-framed walls, internal floors, and pitched or flat roofs
Cavity wall insulation and thermal bridging reduction in refurbishments
Suitable for new build and retrofit projects
Installation Guidance
Fix the insulation boards to the substrate (brick, concrete, or timber) using adhesive, mechanical fixings, or both. After secure placement, the surface must be rasped to create an abrasive finish, ready for mesh reinforcement and application of a base coat or render system.
Certifications
Manufactured to comply with EN 13163 standards for thermal insulation products. Suitable for use within certified EWI render systems across the UK and EU.
Why Choose Graphite EPS from Renders-World?
At Renders-World, we supply high-quality thermal insulation boards that meet today’s energy-efficiency standards. Our Graphite EPS boards offer enhanced performance at a competitive price – perfect for professionals and DIY users alike.
