How does Clayboard compare to other void former products

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.

Clayboard is one of a few products used as a void former for construction applications. We outline here, how Clayboard compares to the alternatives.

Movement comparisons

Attribute comparisons