EPS Insulation
Thermally Insulated Graphite EPS Panels for External Walls
Expanded polystyrene boards offer an efficient, cost-effective insulation solution when integrated into an external facade system. EPS external wall insulation — also known as solid wall insulation — is a widely recognised, budget-friendly way to improve the thermal performance of external walls, and pairs with finishes including reinforced render, cladding, weatherboarding and tile hanging.
Thermally insulated graphite EPS panel (grey)
Graphite EPS is a lightweight cellular plastic material suitable for a wide range of building insulation applications. It is an excellent insulating medium that delivers consistent thermal performance across the range of temperatures normally encountered in buildings.
The material is versatile, light in weight, clean and easy to handle, providing a cost-effective means of including permanent insulation in floors, walls and roofs — helping projects meet, and exceed, the standards laid down in the Building Regulations.
Graphite EPS is a specialised version of expanded polystyrene treated with graphite particles, which reflect heat and further improve the board's insulating capability. This gives graphite EPS a lower thermal conductivity than standard white EPS — meaning a thinner board achieves the same thermal performance.
What is EPS insulation?
EPS insulation (expanded polystyrene) is a widely used, cost-effective insulation board made from expanded polystyrene beads fused together under pressure to form a dense, closed-cell board. It offers excellent thermal performance and integrates seamlessly into external wall insulation systems, making it ideal for both residential and commercial projects.
As an EPS insulation board, it is lightweight yet durable, water resistant, rot proof and highly resistant to mould — and it can be specified in various thicknesses depending on the thermal requirement of the project. Graphite EPS takes this further: the graphite content improves thermal resistance, so a graphite EPS slab insulates more effectively than a standard EPS panel of the same thickness.
Why specify EPS insulation
High Thermal Performance
With a thermal conductivity of 0.030 W/mK, graphite EPS insulation boards deliver excellent energy efficiency and help reduce heat loss from buildings.
Cost-Effective
EPS insulation offers high thermal performance at a lower cost per board than many alternatives — an attractive option for balancing performance and budget.
Lightweight & Easy to Install
The lightweight nature of expanded polystyrene makes EPS panels easy to handle, cut and install — even on large-scale projects.
Durable & Water Resistant
Despite being lightweight, EPS offers excellent compressive strength and water resistance, protecting against moisture penetration over a long service life.
Rot Proof & Mould Resistant
EPS insulation is rot proof and highly resistant to mould growth, making it reliable across a wide range of construction applications.
Versatile Application
Suitable for walls, floors and roofs across new build, retrofit and refurbishment — compatible with masonry, timber and concrete substrates.
High Compressive Strength
Beads fused under pressure create a dense, closed-cell board that supports external render finishes without risk of deformation over time.
100% Recyclable
EPS can be fully recycled at the end of its service life, supporting more sustainable building practices and reducing waste to landfill.
Render & Fixing Compatible
Compatible with adhesives, mechanical fixings and reinforced render finishes — the standard insulant for EWI render systems.
Applications
EPS insulation is a key component in many external wall insulation systems, adding a protective, insulating layer to external walls and reducing heat loss. Common applications include:
What it delivers
Thermal. A thermal conductivity of 0.030 W/mK provides high thermal resistance, reducing heat loss in winter and helping keep interiors cooler in summer — lowering heating and cooling costs.
Solid wall insulation. As part of an EWI system, EPS boards form a continuous insulation layer that prevents thermal bridging and helps the building maintain a consistent internal temperature.
Durability. The dense, closed-cell structure resists moisture and impact while holding its form, maintaining thermal performance throughout a long service life.
Specification
Indicative technical data for Licata graphite EPS insulation. Always refer to the current data sheet for the full specification and available thicknesses.
How EPS sits in the wall build-up
In a Licata external wall insulation system, the EPS insulation board is one layer in a complete, tested build-up — fixed to the wall and finished with a reinforced render system to weatherproof and protect it.
Always install as part of the specified system and in line with the current installation guidance.
EPS insulation — frequently asked
Used across every building type
New Build
Cost-effective thermal performance for new residential and commercial developments, meeting Building Regulations.
Retrofit
Solid wall insulation for upgrading the thermal performance of existing solid wall housing stock.
Domestic
Improves energy efficiency and reduces heating costs across homes and residential projects.
Commercial
Reliable, budget-friendly insulation for offices, retail and large-scale commercial builds.
Need EPS insulation for your project?
Graphite EPS insulation boards stocked across our six UK branches in various thicknesses. Speak to our team about availability, pricing and the right EWI system for your specification.