InsuBlock 17kg/m³
Insutech EPS 17 Block is a white, lightweight expanded polystyrene block manufactured at a nominal density of 17 kg/m³ (±5%).

Engineered for the job it protects.
Insutech EPS 17 Block is a white, lightweight expanded polystyrene block manufactured at a nominal density of 17 kg/m³ (±5%). Supplied as standard 4m × 1.20m × 1m blocks or CNC-cut to custom dimensions, EPS 17 bridges the gap between the ultra-light EPS 14 and the widely used EPS 20, offering improved compressive and tensile strength (≥ 80 kPa) without significantly increasing material weight.
Its thermal conductivity of ≤ 0.036 W/mK provides effective insulation for roofs, walls, and floors, while its improved mechanical properties make it suitable for applications demanding slightly higher load resistance than EPS 14.
- Thermal conductivity ≤ 0.036 W/mK for effective, energy-efficient insulation
- Improved compressive strength ≥ 80 kPa — better performance than EPS 14 under load
- Lightweight at 17 kg/m³ with excellent handling and cutting characteristics
- Available in standard 4m × 1.20m × 1m blocks or custom CNC-cut shapes
- White, closed-cell EPS — moisture-resistant and dimensionally stable
- Low water absorption: ≤ 3% by volume (EN 12087) for durable long-term performance
- Class E fire rating per EN 13501-1; maximum service temperature 75°C
- Resistant to moisture and most common construction chemicals
Application, Step by Step.
Set out the block layout from the drawings, confirming spans, spacing and bearing details before any blocks are placed on site.
Prepare and level the supporting joists, beams or substrate, checking that bearings are clean, aligned and ready to receive blocks.
Place the blocks tightly together along the supports, working row by row and cutting end pieces cleanly for a snug, stable fit.
Check lines, levels and joints across the whole area, adjusting any misplaced blocks before reinforcement or services are installed.
Fix the specified reinforcement and route any services, keeping the block surfaces undamaged and joints fully closed throughout.
Pour the structural topping or finish layers as specified, compacting carefully so the completed system performs as it was designed.

















