120mm Stylite Plustherm Grey EPS 70 Board

120mm Expanded polystyrene (EPS) insulation boards deliver outstanding thermal performance for external wall insulation systems. These high-quality boards substantially boost building thermal efficiency, lowering U-values whilst minimising water ingress and condensation risks. The 120mm thickness works seamlessly with timber, masonry, system-built properties, tile hanging, and numerous rendering finishes. Installation involves applying boards to masonry or timber-backed walls with adhesive and mechanical fixings, or inserting them into cavity voids for cavity wall insulation applications.

120mm Stylite Plustherm Grey EPS 70 stands out as the preferred choice for external wall insulation systems, offering exceptional thermal performance at competitive pricing. Selecting this cost-effective 120mm EPS board delivers significant savings whilst maintaining superior quality and thermal ratings.

Installation costs reduce considerably when using 120mm EPS within an EWI system. The material's lightweight nature means lower-strength adhesives and plastic fixings suffice instead of metal alternatives. Being non-breathable, 120mm Stylite EPS permits budget-friendly thin coat renders, including EWI-075 Silicone Render or EWI-040 Acrylic Render.

Product specification

• Brand: Stylite®
• Model: 120mm Grey EPS EWI 70
• Thickness: 120mm
• Dimensions: 1,200mm x 600mm x 120mm
• Length: 1200mm
• Width: 600mm
• Board Coverage: 0.72m2
• Pack Coverage: 7.20m2
• 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

120mm Stylite Expanded Polystyrene insulation boards provide an excellent solution for external wall insulation projects. These boards attach securely to existing wall surfaces, immediately enhancing both aesthetic appeal and thermal performance. Applying insulation to the external wall face rather than internally significantly reduces interstitial condensation risks within wall cavities.

Stylite 120mm External Wall Insulation boards suit diverse wall types, from solid brick construction to timber frame walls. External wall insulation typically requires a rendered protective layer, with application methods varying by system specification. These 120mm Stylite EWI boards also perform excellently in rail or drained cavity EWI configurations.

Preparation

Deploy netting across scaffolding to prevent polystyrene debris dispersal during windy conditions. We strongly advise using hot knife or hot wire cutters to minimise polystyrene offcuts; standard knives work if necessary. Ideally, cut EPS insulation boards in sheltered areas to avoid offcut scatter.

EPS Insulation Application

Always follow the manufacturer's comprehensive installation guidelines for EPS insulation boards, covering 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 external walls, apply a protective outer layer such as mortar basecoat or netting to shield against heat, moisture, and UV damage.

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

EPS Insulation Storage

Verify the manufacturer's expiry date for shelf life information. Store in dry conditions within original packaging. Protect from excessive heat and direct UV exposure.

More Information on 120mm Stylite Plustherm Grey EPS 70 Insulation Board

• Manufacturer Link: 120mm Stylite EPS70
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