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Controlled Permeability Formwork

Formtex is a two-sided CPF (Controlled Permeability Formwork) liner with a permeable side allowing water and air to pass through and a filter side designed with a pore size slightly smaller than the size of the particles in the concrete.

The main function of Formtex CPF liner is to drain surplus water and air from the surface of freshly placed concrete during compaction. When water is drained, the water/cement (w/c) ratio in the concrete cover is reduced, which improves the strength and durability of the concrete considerably.