20mm Grey Polystyrene EPS External Wall Insulation

20mm Grey Polystyrene (Graphite) represents a premium expanded polystyrene (EPS) board incorporating graphite particles for superior thermal performance. The integrated graphite delivers a distinctive grey appearance whilst reflecting radiant heat, boosting insulation effectiveness by up to 20% compared to standard white EPS insulation at the same thickness. This rigid closed-cell EPS formulation encapsulates air within each bead, and because air resists heat conduction effectively, it substantially reduces heat transfer rates.

Graphite particles embedded throughout the cell structure of 20mm Grey Polystyrene (Graphite) boards create reflective surfaces and a striking dark grey finish. As radiant heat passes through the 20mm graphite insulation, multiple reflections occur, dramatically slowing thermal transmission and maximising energy efficiency.

Within 20mm Grey Polystyrene (Graphite) boards, warm air travels an indirect route towards cooler zones, decelerating heat transfer and maintaining interior warmth. This mechanism delivers improved thermal conductivity of 0.031 W/mK, outperforming conventional 20mm expanded polystyrene boards.

Product specification

• Brand: Ceresit / Arbet / Styropoz
• Model: 20mm EPS 70 EWI
• Thickness: 20mm
• Length: 1000mm
• Width: 500mm
• Dimensions: 1,000mm x 500mm x 20mm
• Pack Quantity: 30
• Pack Coverage: 15m2
• Pack Weight: 4.50kg
• Compressive Strength: 70 kPa
• Density: 15kg/m3
• R-Value: 0.65m2K/W
• Thermal Conductivity: 0.031W/mK
• Material: Expanded Polystyrene
• Profile: Square Edge
• MPN: 20mm Graphite EPS (Grey Polystyrene)
• Colour: Grey ǀ Graphite
• Applications: External Wall Insulation Systems
• ETA Notification: Yes
• Features: Effectively reduce heating costs

Applications

• Balcony loggias
• Sandwich walls
• External wall insulation systems
• Framed wall surfaces
• Solid brick and block walls
• Continuous outer layers of frame walls
• Cavity block and brick walls
• Cavity dense block walls
• Thin coat rendering
• Gaps in closed or ventilated three-layer walls
• Insulated render systems
• Walls constructed using the "light wet" or "light dry" method
• ETICS (External Thermal Insulation Composite Systems)

Benefits of Expanded Polystyrene (EPS) Grey Insulation

1. Enhanced Thermal Performance: Graphite integration within grey EPS significantly boosts insulation properties, lowering heating and cooling energy demands.
2. Cost-Effective: Delivers outstanding performance at competitive pricing compared to alternative insulation solutions, offering excellent value.
3. Lightweight: Simple to transport and fit, reducing installation labour and project timescales.
4. High Moisture Resistance: 20mm EPS insulation demonstrates excellent moisture resistance, preserving thermal properties throughout its lifespan.
5. Durability: Robust material retaining insulating capability and structural stability across decades of use.
6. Environmentally Friendly: Frequently manufactured with recycled materials and fully recyclable, supporting green building practices.
7. Ease of Installation: Readily shaped and trimmed to suit any configuration, offering flexibility across diverse projects.
8. Mold and Mildew Resistant: Natural resistance to fungal growth ensures healthier interior spaces.
9. Versatility: Applicable across walls, roofs, floors, and foundations for comprehensive coverage.
10. Improved Fire Resistance: Selected grey EPS variants incorporate fire-retardant treatments for enhanced protection.
11. Low Thermal Conductivity: Minimises heat movement, strengthening building energy performance.
12. Minimal Thermal Bridging: Substantially reduces thermal bridging risks, preventing heat loss and unnecessary energy expenditure.
13. Acoustic Insulation: Contributes meaningful sound insulation properties, creating quieter interior environments.

Characteristics

• Lightweight
• Easily cut with a sharp knife to any size and shape
• High resistance to mold growth
• Highly durable when used according to specifications
• Cost-efficient
• Environmentally friendly Green Way product

Installation

The 20mm EPS boards are initially fixed to the substrate (masonry or timber) using mortar/adhesive, mechanical fixings, or a combination of both. The 20mm expanded polystyrene boards should then be covered with an outer layer, such as siding or a mortar layer. The outer surface of the board needs to be rasped or sanded to create an abrasive surface before covering it with fiber mesh, to which the base coat or mortar layer is applied.

Certifications

Produced in accordance with EN-13163 Standard.

More Information on 20mm Grey Polystyrene EPS for External Wall Insulation

• Manufaturer Link: 20mm grey EPS70
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