Expanded polystyrene foam blocks is a closed cell, lightweight rigid cellular plastic material, produced in a range of densities from 13.5 kg/m3 and 28 kg/m3 which offers excellent thermal insulation properties. Closed cell foam is used across various industries including civil engineering, construction and packaging applications, as it is valued for its durability, ease of handling, and high strength to weight ratios including shock absorbing characteristics.
Closed Cell Foam Blocks
EPS polystyrene blocks are renowned for their excellent thermal insulating properties and are an economical solution for landscaping applications, when used as void infill material for planter box or concrete formwork, voids and block outs, pipe insulation, pontoons, floatation and buoyancy applications.
Foam Technologies stock a range of block densities, (Standard) SL, (Medium) M, and (Hard) H, and VH grades). Standard sheet sizes are 2400x1200mm and 3600x1200mm which can be cut to thickness from 10mm to 600mm. Special custom block and cut sheet sizes can be ordered with quick turn-around times.
Physical Properties of Foam Block
Density:
• Standard Range: 13.5 kg/m3 -28 kg/m³
Thermal Conductivity:
• Range: 0.032 – 0.044 W/m·K
Compressive Strength:
• Range: 70 – 165 KPA
Water Absorption:
• Typical Value: 2-4% by volume
• EPS polystyrene blocks have minimal water absorption, which contributes to their durability and effectiveness.
Dimensional Stability:
• Temperature Range: -50°C to 75°C
• Closed cell foam maintains their shape and performance across a wide range of temperatures, making them suitable for various environmental conditions.
Applications Of EPS Polystyrene Foam Blocks
Construction
Insulation: EPS polystyrene blocks can be cut into sheets to be and used as thermal insulation in cavity walls, external cladding systems, insulated panels for roofs, under slab or underfloor insulation. The excellent insulating properties help reduce heat gain or heat loss saving energy and reducing energy consumption.
Lightweight Fill Material: Ideal for use as lightweight infill applications such as void foam for landscaping, weight reduction, soil stabilisation for retaining walls and roof top gardens.
Packaging
Protective Packaging: EPS polystyrene blocks and sheets are used to protect sensitive and fragile items during shipping. Their cushioning properties help to absorb shocks and impacts.
Marine and Buoyancy
Floating Devices: Polystyrene foam blocks are utilised in the construction of floating devices such as buoys and marine applications due to their buoyant properties.
Arts and Crafts
Model Making: The ease of cutting and shaping polystyrene blocks makes them a popular choice for creating scale models, prototypes, and artistic installations.
Geotechnical Engineering
Lightweight Fill: Used in geotechnical applications to reduce the load on underlying soils and structures, especially in areas with weak ground conditions.
Environmental Considerations
Recyclability
EPS polystyrene foam blocks are recyclable. They can be processed into other materials, helping to reduce waste.
Handling and Safety
Handling
Handle polystyrene blocks carefully to avoid damage. Use proper lifting techniques to manage the size and weight. Protect the blocks from impacts that could cause deformation.
Safety Precautions
When cutting or shaping EPS polystyrene foam blocks, use protective gear such as gloves and masks to avoid inhaling dust or debris.
Storage
Store polystyrene blocks in a dry, cool location away from direct sunlight and chemicals that could degrade the material.
Quality Assurance
EPS polystyrene blocks conform to the relevant industry standards and building codes. Regularly testing for density, thermal conductivity, and compressive strength properties ensure consistent product quality and performance.
