50 mm
BSI Kitemark
Certificate type
Extruded polystyrene (XPS) thermal insulation designed for high loadbearing floors.
Provides a suitable thermal insulation with its closed cell structure is a perfect solution for heavy-duty inverted roofs and floor structures.
Ravatherm XPS X 500 SL thermal insulation with its closed cell structure is a perfect solution for the thermal insulation of heavy-duty inverted roofs, floor structures and load-bearing base slabs.
Features and benefits:
Shape | Rectangular |
Color | Grey |
Finish | Smooth Smooth surface skin (extrusion skin). Skin |
Material | Polystyrene Homogeneous, closed-cell material structure comprised of extruded polystyrene (XPS), a rigid form of insulation. |
Size1250 x 600 mm - Overall length x width per board | 1250 x 600 x 50 mm 1250 x 600 x 75 mm 1250 x 600 x 100 mm |
Uniclass | |
CAWS | E20/200 Proprietary underslab insulation E20/30 Underslab insulation K11/115 Battened plywood floating floor K11/125 Battened particleboard floating floor K11/135 Battened oriented strand board floating floor K11/145 Battened cement-bonded particleboard floating floor K11/20 Battened particleboard floating floor K11/215 Plywood floating floor K11/225 Particleboard floating floor K11/235 Oriented strand board floating floor K11/245 Cement bonded particleboard floating floor K11/25 Particleboard floating floor K20/150 Battened timber board floating floor K20/20 Battened timber board floating floor K21/120 Battened wood flooring K21/130 Battened wood floating floor K21/30 Wood lining on battens M10/290 Floating construction M10/40 Floating construction M13/260 Floating construction M13/40 Floating construction |
Standard | To BS EN 13164. |
Third party product certification | BRE, BBA, CE 13164. |
Fire performanceTo BS EN 13501-1. | Euroclass E.Products contain an ecologically safe flame-retardant additive. |
Compressive strength (minimum) at 10% compression | 500 kPa.To EN 826. To plan the reinforcement steel requirements of floor slab used as a load-distribution structure over the thermal insulation layer, please consult a structural engineer. |
Thermal conductivity (maximum)EN 13164 | 0.031 W/m·K. |
ThicknessThickness dependent on required U-value and application. | 50 mm. |
Face size (length x width) | 1250 x 600 mm.The maximum installation depth of the thermal insulation is determined by the load: the horizontal pressure must not exceed the compressive strength of the boards, taking into account the value of the permanent load. |
Facing | Smooth.Smooth surface skin (extrusion skin). PE film separating and sliding layer between the thermal insulation and the concrete screed for installation on floor applications. |
Edges | Ship lap.A grooved edge allowing boards to overlap, minimizing gaps. |
Compressive creep (design load) maximum 2% deflection after 50 years | 180 kPa. To EN 1606. |
TemperatureRange | -50°C to +75°C maximum. Provides the permanent application temperature of Ravatherm XPS X products. At higher temperatures, the boards will start to soften and suffer permanent deformation. |
Thermal resistance (R-value)(Rd m2 .K/W) | 1.60. |
Platform | Compatible | Version | Certified to |
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![]() | - | 6 | 2.1 |
![]() | - | 6 | 2.1 |