Standard expanded polystyrene void formers
Standard polystyrene is a compressible polystyrene board for
construction applications. See how Clayboard void formers compares
to Standard expanded polystyrene void formers.
Movement comparisons for standard expanded polystyrene
void formers
| Movement | Clayboard | Standard polystyrene |
| 50mm | 60mm | 100mm |
| 100mm | 110mm | 175mm |
| 150mm | 160mm | 250mm |
Attribute comparisons
| Attribute | Clayboard | Standard polystyrene |
| Lightweight | Yes | Yes |
| True void former | Yes | No |
| Lowest level of soil excavation | Yes | No |
| Lowest landfill tax from soil excavation | Yes | No |
| Highest amount of product on a delivery | Yes | No |
| Made from recycled materials | Yes | No |
About Clayboard
Clayboard has a 100% recycled and biodegradable paper honeycomb
core
set between lightweight polypropylene facings which have up to 70%
recycled material content.
When dry, Clayboard® is strong enough to support the weight of
wet concrete and steel reinforcement.
Water is introduced to the Clayboard® core once the concrete
slab or beam is set, degrading the Clayboard® honeycomb centre
which will ultimately lead to the creation of a void and clay heave
protection.
This space will accommodate clay expansion without exerting
undue pressure on the structure above.
The resulting void continues to accommodate natural soil
shrinkage and expansion.
