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 Polystyrene Building Blocks


Polystyrene Building Blocks

Moisture Resistance Abilities

Insulform Polystyrene Block
No.1 Building Systems

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Polystyrene Products:
 Supa Blocks
 Insulation Panels

Other Building Products:

Sill Trays
Shelter Seal


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EPS (Expanded Polystyrene, the material Insulform Building Blocks are made with) is a closed cell material and does not readily absorb water, unless subjected to prolonged saturation. Even in this situation it maintains its shape, size, structure, physical appearance and approximately 85% of its insulation value.

The ability of EPS to resist moisture is exemplified by its widespread use in fishing floats and marinas, involving exposure to water for prolonged periods of time.

For more information on EPS, see Plastics New Zealand's website     


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Product Range

Moisture Resistant

Fire Resistant

Insulating Properties

Insulating Fundamentals

EPS Properties

 Moisture Resistance      Insulating Properties       Product Range


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