Description
The LAMBDABOARD DecoBoard Tongue & Groove by Rigifoam is a 30mm Polyisocyanurate (PIR) insulation board finished with a decorative surface layer and precision-cut tongue and groove edges.
This innovative board is designed for both aesthetic appeal and high-performance insulation, combining energy efficiency with a clean, durable finish. The interlocking edges ensure tight joints, reducing thermal bridging and improving overall performance.
Manufactured with a hydrocarbon-based blowing agent, LAMBDABOARD offers zero Ozone Depletion Potential (ODP) and complies with the Kyoto Protocol for Global Warming Potential (GWP). It’s the ideal choice for architects, contractors, and homeowners looking for a sustainable, energy-efficient ceiling or roofing solution.
Key Features:
✅ Decorative finish with tongue & groove edges
✅ Excellent thermal efficiency (high R-value per 25mm)
✅ Lightweight and easy to install
✅ Environmentally friendly and recyclable
✅ Moisture-resistant and dimensionally stable
✅ Fire-retardant (SANS 428 compliant)
✅ Suitable for ceilings, roofs, and walls
Technical Specifications:
| Property | Specification |
|---|---|
| Core Material | Polyisocyanurate (PIR) |
| Facing Type | DecoBoard |
| Profile | Tongue & Groove |
| Thickness | 30mm |
| Width | 600mm |
| Lengths Available (m) | 4.2 / 4.8 / 5.4 / 6.0 / 6.6 / 7.2 / 7.8 / 8.0 |
| Density | 34–40 kg/m³ |
| Thermal Conductivity | 0.024 W/m·K @ 22°C (aged) |
| R-Value (30mm) | 1.32 m²·K/W |
| Fire Rating | Class B/B1/2/H (SANS 428) |
| Temperature Range | -20°C to +120°C |
| Closed Cell Content | >95% |
| Moisture Absorption | 3% (SABS 1381-1) |
Applications:
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Residential and commercial ceilings
-
Roof insulation systems
-
Decorative insulated panels
-
Energy-efficient retrofits
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