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Polystyrene EPS Graphite 30mm – High‑Performance Thermal Insulation Board
Polystyrene EPS Graphite 30mm is a premium thermal insulation board designed to deliver outstanding energy efficiency for modern construction and external wall insulation (EWI) systems. Featuring advanced graphite enhancement, this EPS board offers superior thermal performance, making it ideal for both residential and commercial build projects across the UK.
Lightweight, durable and easy to install, graphite EPS insulation boards are widely trusted in the industry for helping reduce heat loss, improve building performance and support sustainable construction goals.
Key Features & Benefits
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✅ Graphite‑enhanced thermal efficiency
Graphite particles reflect and scatter heat, giving significantly better insulation than standard white EPS boards. -
✅ Low thermal conductivity (λ ≈ 0.033 W/mK)
Provides effective insulation and energy savings, while allowing compact build layers. -
✅ Lightweight & simple to install
Easy to cut, handle and fix using standard tools and adhesive systems. -
✅ Moisture‑resistant closed‑cell structure
Limits water uptake and helps prevent mould and material breakdown. -
✅ Durable and long‑lasting
Excellent performance over time with minimal maintenance.
Applications
Polystyrene EPS Graphite 30mm insulation boards are ideal for use in:
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External Wall Insulation (EWI) systems
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Internal insulation layers
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Under‑render insulation and façades
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Timber frame wall insulation
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Renovation and retrofit projects
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Residential, commercial and industrial buildings
Technical Specifications
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Material: Expanded Polystyrene (EPS) with graphite additive
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Thickness: 30 mm
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Thermal Conductivity (λ): approx. 0.033 W/mK
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Colour: Graphite grey
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Board Type: Rigid thermal insulation panel
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Installation: Mechanical fixings and/or adhesive (depending on system)
Actual values may vary slightly by production batch.
Why Choose Graphite EPS Insulation?
Compared with traditional white EPS boards, graphite EPS insulation can deliver up to ~20% better performance at the same thickness. This makes the 30mm graphite EPS board an excellent choice for projects where energy efficiency and thermal performance are key, without increasing build thickness.
Perfect Fit for UK Building Standards
Graphite EPS insulation is widely used in approved external wall insulation systems in the UK. Its strong thermal properties help meet energy performance targets in both new build and retrofit applications.