Zemdrain® CPF liners are attached to the formwork face and during the concreting process remove excess air and water from the formwork/concrete interface. This reduces the w/c ratio in the outer 20mm of the surface to nearly optimum values and virtually eliminates blowholes. The resulting concrete has increased resistance to all aggressive elements. The better cured surface produced by Zemdrain® prevents the concrete degradation of tomorrow, today.
Concrete formed with Zemdrain® has the following benefits: