FINNFOAM XPS RELJEEFNE FL300 100×585×1235

Embossed FINNFOAM XPS board with half-lap edge — FL300 class

FINNFOAM XPS RELJEEFNE FL300 100×585×1235 is a rigid extruded polystyrene board with an embossed face for better adhesion of plasters/adhesives and a half-lap (FL) edge for tight joints. Its closed-cell structure makes it water-resistant and frost-durable.

Key benefits

• Closed-cell XPS — very low water uptake, excellent freeze–thaw resistance.
• FL300 strength class — suitable for plinths, ground slabs and loaded details.
• Embossed face — improved bond for render/adhesive systems.
• Half-lap edges — fast install and warmer joints.
• Dimensional stability; easy cutting and handling.

Technical data

• Board size: 100×585×1235 mm (area 0.72 m²).
• Edge: FL half-lap (rebated).
• Surface: embossed (reljeefne) for improved adhesion.
• Thermal conductivity, λ_D: typically 0.034–0.038 W/(m·K); ~0.036 W/(m·K) at 100 mm is common.
• Compressive strength (class): FL300; short-term ≈300 kPa, design long-term ≈130–180 kPa (system-dependent).
• Vapour diffusion factor: μ ≈ 150.
• Packing: 3 boards ≈ 2.17 m² per pack.
• Material/colour: XPS, light yellow.

Applications

• Plinth insulation and render systems.
• Frost insulation, ground slabs, intermediate floors, road structures.
• Walls and (inverted) roofs, moisture-exposed and load-bearing details.

Delivery (brief)

• Tallinn, Estonia: courier DPD / CargoBus — from €13.
• Helsinki: from €55.
• Other Finland: quote on request; lead time ~2–3 business days.