Wall Insulation for Masonry and Tilt Slab Systems
high-performance, graphite-infused EPS board
EXPOL FastLine is a high-performance, graphite-enhanced expanded polystyrene (EPS) insulation board specifically engineered for masonry block and tilt slab wall applications in New Zealand construction.
With an R-value of 2.0 at just 60 mm thickness, EXPOL FastLine delivers outstanding thermal performance in a slim, space-efficient profile—making it a cost-effective solution for commercial, industrial, and residential projects.
Designed to support compliance with updated H1 Building Code requirements, EXPOL FastLine enables fast, straightforward installation while improving overall wall system performance.
Manufactured for long-term durability, EXPOL FastLine will not sag, slump, or degrade over time, ensuring consistent insulation performance for the life of the building.
Important: Do not store in direct sunlight. Exposure may damage the product and void the warranty.

FastLine creates a continuous layer of wall insulation that eliminates thermal bridging through framing, dramatically improving overall wall performance.
Maintains professional-grade thermal performance while streamlining the installation process.
Designed for ease of handling and placement, reducing labour costs and project complexity.
Click a solution below to view installation guides and full system details
| Length (mm) | Width (mm) | Thickness (mm) |
|---|---|---|
| 2400 | 600 | 45 |
| 2400 | 600 | 60 |
| 2400 | 600 | 70 |
| 2400 | 600 | 90 |
| Property | EXPOL FastLine |
|---|---|
| Material | Expanded Polystyrene with Graphite |
| Density | 18 kg/m³ |
| Thickness / Product R-value (m²K/W) (ASTM C518-04) | |
| 45mm | R 1.40 |
| 60mm | R 1.90 |
| 70mm | R 2.20 |
| 90mm | R 2.80 |
| Determination of flame propagation surface ignition (AS2122.1-1993) | Medium flame duration (max): 2 sec |
| Eighth value: 3 sec | |
| Fire behaviour (AS/NZS 1530.3:1999) | Spread of flame Index (0-10): 0 |
| Smoke Developed Index (0-10): 5 | |
| Rate of water vapour transmission (max) measured parallel to rise at 23°C (AS 2498.5) | 520 MG/M²S |
| Specification | Detail |
|---|---|
| Manufacturing standard | AS 1366 Part 3 1992 (Expanded Polystyrene) |
| Origin | New Zealand owned and manufactured |
| Recyclability | EXPOL FastLine manufacturing waste is actively recycled into other EXPOL products |
Source: EXPOL FastLine Technical Guide, linked above. For project-specific advice contact the EXPOL Tech Team.