Description
LAMBDABOARD is a flexible faced Polyisocyanurate (PIR) insulation board manufactured on a continuous laminator. This advanced insulation solution uses a hydrocarbon-based blowing agent that has zero Ozone Depletion Potential (ODP) and complies with the Kyoto Protocol for Global Warming Potential (GWP) — making it a green, energy-efficient alternative to traditional insulation.
LAMBDABOARD offers superior thermal efficiency, excellent dimensional stability, moisture resistance, and fire performance. With the highest stable R-value per 25mm, it ensures optimal insulation using minimal thickness — helping reduce the overall building footprint and energy costs.
Key Benefits:
✅ Recyclable and environmentally responsible
✅ Highest stable R-value per 25mm thickness
✅ Moisture resistant and water repellent
✅ Excellent dimensional stability
✅ Resistant to construction solvents
✅ Superior fire performance
✅ Thermoset material – will not soften or melt
✅ High compressive strength
✅ Wide temperature range: -20°C to +120°C
✅ Supports energy cost reduction and sustainability goals
Technical Information:
| Property | Specification |
|---|---|
| Core Material | Polyisocyanurate (PIR) |
| Facing Options | Obsidian Black, Gun Metal Grey, DecoBoard, White Mineral, Mineral Natural, Bitumen Kraft, Kraft, Tile Carrier, Eco LamFoil, Eco LamFoil 5C |
| Density | Minimum 34 kg/m³ (foam core), 40 kg/m³ overall |
| Thermal Conductivity | 0.024 W/m·K @ 22°C (aged) |
| Closed Cell Content | >95% |
| Moisture Absorption | 3% (SABS 1381-1) |
| Temperature Range | -20°C to +120°C |
| Toxicity | Safe for confined areas (NES 713) |
| Fire Rating | Class B/B1/2/H in accordance with SANS 428 (flame spread <20mm, smoke emission <50%) |
Available Sizes:
| Thickness (mm) | Width (mm) | Length | R-Value (m²·K/W) |
|---|---|---|---|
| 25 | 1220 | Up to 12m | 1.04 |
| 30 | 1220 | Up to 12m | 1.25 |
| 40 | 1220 | Up to 12m | 1.67 |
| 50 | 1220 | Up to 12m | 2.08 |
| 60 | 1220 | Up to 12m | 2.50 |
| 70 | 1220 | Up to 12m | 2.92 |
| 80 | 1220 | Up to 12m | 3.33 |
| 90 | 1220 | Up to 12m | 3.75 |
| 100 | 1220 | Up to 12m | 4.17 |
Applications:
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Over purlin insulation
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Vertical cladding
-
Under screed
-
Cavity wall systems
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Curtain walls
-
Ceilings
-
Under soffit insulation
-
HVAC and ducting
Sustainability and Energy Efficiency:
LAMBDABOARD aligns with its mission — “Take control of your energy costs”. By reducing heating and cooling loads, it delivers measurable savings and long-term environmental benefits.
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