Warmline EPS is available in several different thicknesses and sizes; please see the drop-down menu for the full selection to suit your needs. This product uses expanded polystyrene insulation which is bonded to thick plasterboard providing a modest level of thermal insulation. This makes it suitable for use in rooms where a low level of insulation is required. This product can be used as an equivalent to Gyproc Thermaline Basic. Fully applicable with Part L of the building regulations and is CFC and HCFC-free . It has a Thermal Resistance R-value:0.374, Dot & Dab: 1.059 W/m2K and Fixed Batons: 0.992 W/m2K. For any further information or assistance using this product, please get in touch. †