230mm Stylite Plustherm Grey EPS 70 Board

230mm Expanded polystyrene (EPS) insulation board delivers outstanding thermal performance for external wall insulation systems. This high-quality material dramatically improves building thermal efficiency, enhances U-values, and minimises water ingress and condensation risks. The 230mm boards work seamlessly with timber, masonry, system-built properties, tile hanging, and numerous rendering finishes. Installation involves adhesive and mechanical fixings on masonry or timber-backed walls, with cavity wall applications also supported.

230mm Stylite Plustherm Grey EPS 70 Insulation Board remains the preferred choice for external wall insulation systems, delivering exceptional thermal performance at competitive pricing. Selecting this cost-effective 230mm EPS board ensures outstanding value without sacrificing quality or thermal capabilities.

Installation of 230mm EPS within an EWI system benefits from reduced material costs. The material's lightweight nature requires lower-strength adhesive and plastic fixings rather than metal alternatives. Being non-breathable, 230mm Stylite EPS enables the application of economical thin coat renders, including EWI-075 Silicone Render or EWI-040 Acrylic Render.

Product specification

• Brand: Stylite®
• Model: 230mm Grey EPS EWI 70
• Thickness: 230mm
• Dimensions: 1,200mm x 600mm x 230mm
• Length: 1200mm
• Width: 600mm
• Board Coverage: 0.72m2
• Pack Coverage: 3.60m2
• Weight: 13.02kg
• Weight/m2: 1.13kg
• Compressive Strength: 70 kPa
• Bending strength: >= 75kPa
• Density: 20kg/m3
• Thermal Resistance: 0.66m2K/W
• Thermal Conductivity: 0.032W/mK
• Grades: EPS 70 & Plustherm
• Edge Profile: Plain edge profile
• Colour: Grey ǀ Graphite
• Material: Expanded Polystyrene
• Profile: Square Edge
• Application Temperature: from +5 °C to +25 °C
• Applications: External Wall Insulation Systems
• ETA Notification: Yes
• Features: High performance thermal insulation board
• Manufacturer: SPI Stylite Styrene®

Typical Applications

230mm Stylite Expanded Polystyrene insulation boards provide an excellent solution for external wall insulation projects. These boards attach directly to existing wall substrates, immediately enhancing both aesthetic appeal and thermal performance. Applying insulation to the external wall surface rather than internally significantly reduces the likelihood of interstitial condensation developing within the wall structure.

Stylite 230mm External Wall Insulation board suits diverse wall constructions, from solid brick to timber frame walls. External wall insulation typically receives a rendered protective coating, with application methods varying by system type. The 230mm Stylite EWI boards also perform well in rail or drained cavity EWI configurations.

Preparation

Deploy netting on scaffolding to prevent polystyrene debris dispersal during windy conditions. We strongly advise using hot knife or hot wire cutting equipment to minimise polystyrene offcuts, though standard knives work as alternatives. For best results, perform cutting in covered spaces to avoid scrap material becoming airborne.

EPS Insulation Application

Install EPS insulation boards following the manufacturer's comprehensive installation guidelines, addressing all design and application requirements. Begin by securing EPS boards to the substrate (masonry or timber) using mortar/adhesive or mechanical fixings.

After fixing boards to the external wall, apply a protective outer layer such as mortar basecoat or netting to shield against excessive heat, moisture, and UV damage.

Before applying basecoat or mortar with fibreglass mesh, rasp or sand the board surface to achieve an abrasive finish suitable for mesh application. Once prepared, the substrate is ready for fibreglass mesh installation. Consult the full installation guide for comprehensive instructions.

EPS Insulation Storage

Verify the manufacturer's expiry date for shelf life information. Keep in dry conditions within original packaging. Protect from intense heat and direct sunlight.

More Information on 230mm Stylite Plustherm Grey EPS 70 Insulation Board

• Manufaturer Link: 230mm Stylite EPS70
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