EXPOL INSULATION - R1.4
EXPOL INSULATION - R1.4
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- Minimum Order Value: $150
- 5% off when total order is $600+ (applied at checkout; max discount $1,000 AUD)
- 10% off when total order is $850+ (applied at checkout; max discount $1,000 AUD)
Expol Underfloor R1.4 is engineered to transform cold, draughty suspended floors into warm, quiet living spaces. Crafted from rigid, closed-cell EPS, it delivers a product R-value of 1.4 m²·K/W—exceeding minimum standards for both new builds and retrofit projects. Available in three joist-centre widths (410 mm, 470 mm and 560 mm), its concertina-style edges let you score and snap boards on-site for a perfect fit every time. Flame-retardant and moisture - Expol Underfloor combines durability with sustainability—manufactured without CFCs/HCFCs, containing recycled content where possible, and fully recyclable at end-of-life. BRANZ-appraised and backed by a 50-year limited warranty.
Key Benefits
• Fit-for-Purpose Sizes – Suits 410 mm, 470 mm or 560 mm joist centres for seamless installation
• Effortless Cutting – Concertina edges compress up to 20 mm for snug, tool-free fitting
• Long-Lasting Performance – Rigid board won’t sag over decades; backed by a 50-year warranty
• Safety First – Non-halogen flame retardant additives for enhanced fire safety
• Moisture & Pest Resistant – Closed-cell EPS repels water and offers no nutritional value to vermin
• Noise Reduction – Helps dampen footfall and timber-floor squeaks
• Sustainable Choice – Contains recycled material where possible and is 100% recyclable
Technical Overview
Panels measure 60 mm thick by 1200 mm long, are available to suit joist centres of 410 mm, 470 mm or 560 mm, and include concertina edges, non-halogen flame-retardant additives and closed-cell EPS for moisture and pest resistance.
Specifications
| Property | Value |
|---|---|
| R-Value | 1.4 m²·K/W |
| Thickness | 60 mm |
| Length | 1200 mm |
| Joist Centres (Width) | 410 mm, 470 mm, 560 mm |
| Edge Profile | Concertina (compressible up to 20 mm) |
| Material | Closed-cell Expanded Polystyrene (EPS) |
| Fire Safety | Contains flame retardant |
| Moisture Absorption | < 1% by volume |
| Warranty | 50-year limited, BRANZ-appraised |
| Recyclability | Offcuts fully recyclable at EPS drop-off |
| Pest Resistance | No nutritional value for vermin |
| Joist Centre & Panels per Bag | Coverage per Bag (m²) |
| 410 mm – 11 panels | 5.41 |
| 470 mm – 10 panels | 5.64 |
| 560 mm – 9 panels | 6.05 |
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