Stylite External Wall Insulation Boards are manufactured from Expanded Polystyrene (EPS) and can be used with many different types of External Wall Insulation (EWI) systems to meet or exceed Building Regulations for thermal performance.

During the retrofit of existing buildings Stylite External Wall Insulation Boards are used to provide a thermal upgrade and reduce condensation problems, whilst the rendered finish also improves the appearance. In new build applications an EWI system provides thermal properties but also allows specifiers to design buildings with contemporary façades.

All Stylite External Wall Insulation Boards are typically manufactured to one standard size, at 1200 x 600 mm. The typical thickness of Stylite EWI boards, for residential applications, is 90 mm for PlusTherm graphite enhanced EPS and 120 mm for standard EPS70 FRA. Other sizes and thicknesses may be available on request.

Features and benefits:

• Suitable for all wall applications up to 18m.
• Lambda from as low as 0.030 W/mK.
• Suitable for residential and domestic builds.
• Compatible with adhesive and mechanically fixed systems.
• Fire retardant grade EPS.
• No reduction in performance over time.
• Lightweight, quick and easy to install.
• Minimal water absorption and permeability.
• 100% recyclable.
• BRE Green Guide Rating of A+.
• Length Tolerance L2.
• Width Tolerance W2.
• Thickness Tolerance T2.
• Flatness Tolerance P5/P3.
• Squareness S2.

Expanded Polystyrene is rot proof, Expanded Polystyrene is not affected by bacteria, moulds or fungi, and will not provide nutrient value for insects or vermin. Expanded Polystyrene does not lose any performance over time and will remain an effective insulation for the life of the building.

Stylite Expanded Polystyrene will achieve reaction to fire Euroclass F. However, the system classification achieved when installed within a building will generally be considerably better due to use of other construction materials. We also supply FRA grades which contain a Fire Retardant Additive and achieve reaction to fire Euroclass E.

Stylite Expanded Polystyrene is hydrophobic and highly resistant to the absorption of water but will allow a very minimal amount of water vapour transfer. Expanded Polystyrene is often utilised with a suitable damp proof membrane or vapour control layer to avoid any unwanted water ingress.

The Stylite Expanded Polystyrene does not contain HFC’s, CFC’s or HCFC’s. Expanded Polystyrene has a Global Warming Potential (GWP) of zero and a low O-Zone Depletion Potential (ODP). Expanded Polystyrene is 100% recyclable.