Stylite Clayfill - Insulation

Stylite Clayfill is a low density Expanded Polystyrene (EPS) compressible fill that helps reduce any forces exerted onto deep fill foundations, concrete ground beams and piled foundations. These pressures can be caused by many things, the expansion of clay soils, excess water or overgrowth of tree roots. Whatever the reason for the development of these forces Stylite Clayfill can help absorb the pressure exerted onto the foundations.

Stylite Clayfill is easy to install and is available in standard thicknesses of 50, 100, 150 and 200 mm to accommodate the different levels of ground movement. The compressible fill is also available in pre-cut pile collars to suit the diameter of the pile. EPS is the perfect clay heave protection solution as it is water and rot resistant and will never lose its compressibility.

All Stylite Clayfill Boards are typically manufactured to standard thicknesses, however bespoke sizes are available on request to fit specific trench foundation dimensions. Stylite Clayfill Pile Collars are pre-cut to suit the dimensions of the pile foundation and trench. The required thickness of the board will vary depending on the potential ground movement and the allowable pressure limit of the foundation substrate.

Features and benefits:

• Reduces the effects of clay heave for the life of the foundation.
• BBA Agrément Certified 02/3975.
• Resistant to moisture and rot.
• Maximum lateral pressures of up to 40kN.m-2.
• Pre-cut pile collars to suit application.
• No reduction in performance over time.
• Lightweight, quick & easy to install.
• Minimal water absorption & permeability.
• 100% recyclable.
• BRE Green Guide Rating of A+.
• Length Tolerance L2.
• Width Tolerance W2.
• Thickness Tolerance T2.
• Flatness Tolerance P5.
• 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 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.

Stylite Expanded Polystyrene will achieve reaction to fire Euroclass F. However, the classification achieved when installing in a building will be considerably better. We also supply FRA grades which contain a Fire Retardant Additive and achieve reaction to fire Euroclass E.

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.