Expanded Polystyrene, or EPS, is a versatile and cost-effective material embraced by the construction, building, agriculture, marine, landscaping and packaging industries. Its acclaim comes from its lightweight, insulating, and protective attributes. Comprised mainly of inert cellular plastic, EPS is approximately 98% air and recyclable throughout its lifecycle.
At Ausdeck, we manufacture a range of EPS blocks in different sizes and densities. Whether you require a standard or custom block or shape, we can design, prototype, and manufacture a solution to match your project requirements. You can use our blocks to insulate floors, fill voids, construct floatation devices, design architectural and landscaping features, create custom packaging, and much more.
EPS blocks are available in various sizes and densities and can be cut, shaped or moulded to fit specific needs, making them ideal for insulation, void fill, architectural features and more.
EPS blocks are made from inexpensive raw materials and offer exceptional durability, making them a cost-effective choice for long-term projects.
The closed-cell structure of the foam traps air, reducing heat transfer and helping to maintain temperature control.
Our EPS sheets contain fire resistance additives that meet Australian standards.
| Length | Width | Height |
| 5030 | 1040-1220 | 625 |
| EPS Physical Properties in accordance with AS 1366.3 - 1992 | Unit | SL | S | M | H | VH | Test Method |
| Density - nominal | Kg/m3 | 13 | 16 | 19 | 24 | 28 | N/A |
| Compressive stress at 10% deformation | kPa | 70 | 85 | 105 | 135 | 165 | AS 2498.3 |
| Cross break strength | kPa | 135 | 165 | 200 | 260 | 320 | AS2498.4 |
| Rate of water vapor transmission (max.)measured parallel to rise at 25'c | ug/m2.s | 630 | 580 | 620 | 460 | 400 | AS 2498.5 |
| Dimensional stability of length, width, thickness(max.) at 70', dry condition 7 days | % | 1 | 1 | 1 | 1 | 1 | AS2498.6 |
| Thermal resistance (min.) at a mean temperature of 23' (50mm sample) | m2,Kw | 1.13 | 1.17 | 1.2 | 1.25 | 1.28 | ASTM C518 |
| Flame Propagation Characteristics | |||||||
| - median flame duration (max.) | SD | 2 | 2 | 2 | 2 | 2 | AS 2498.1 |
| - eight value (max.) | SD | 3 | 3 | 3 | 3 | 3 | |
| - median volume retained | % | 18 | 22 | 30 | 40 | 50 | |
| - eight value (min.) | % | 15 | 19 | 27 | 37 | 47 | |
| EPS Physical Properties not specified in AS 1366.3 -1992 | Unit | SL | S | M | H | VH | Test Method |
| Compressive strength at 1% deformation(max.) | kPa | 23 | 31 | 42 | 48 | 72 | ASTMD1621 |
| Compressive strength at 5% deformation(max.) | kPa | 59 | 68 | 95 | 134 | 164 | ASTMD1621 |
| Flexural strength (min.) | kPa | 150 | 178 | 218 | 304 | 337 | ASTM C203 |
| Elastic modulus (min.) | kPa | 2200 | 3100 | 4250 | 5850 | 7250 | |
| Water absorption by total immersion (max.) | Volume % | 4 | 4 | 3 | 3 | 2 | ASTMC272 |
| Buoyancy force | Kg/m3 | 9886.5 | 984 | 981 | 976 | 972 | N/A |
| Coefficient of thermal expansion | m/m deg K | 6.3 x 10*5 | 6.3 x 10*5 | 6.3 x 10*5 | 6.3 x 10*5 | 6.3 x 10*5 | ASTM D696 |
| EPS Thickness (mm) | |||||||
| EPS Density | 150 | 125 | 100 | 75 | 60 | 50 | |
| SL | 3.42 | 2.85 | 2.28 | 1.71 | 1.37 | 1.14 | |
| S | 3.75 | 3.125 | 2.49 | 1.78 | 1.5 | 1.19 | |
| M | 3.96 | 3.3 | 2.64 | 1.98 | 1.58 | 1.32 | |
| H | 4.1 | 3.42 | 2.73 | 2.05 | 1.64 | 1.37 | |
| VH | 4.29 | 3.57 | 2.86 | 2.14 | 1.71 | 1.43 | |
Density and R Values
EPS is a versatile material with a wide range of uses, and selecting the right density is crucial for achieving desired performance characteristics. Considerations include:
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