How to protect banks and embankments in an environmentally friendly and cost-effective way? Prolock is an expert in the field of plastic sheet piles and sealing screens. Prolock has become a concept that stands out for its quality, sustainability and applicability. It is a hybrid system, consisting of a short plastic screen and longer wooden posts. Prolock screens are located above and below the waterline, so they are not susceptible to rot or rust. Prolock has the right solution for every situation. Each project is tailor-made and begins with an indicative strength calculation.