Make a Good Impression With Concrete-Form Liners Backfill by John D. Wagner JLC · MARCH 1989 Tired of those drab, plain-concrete walls? Got a client who wants to jazz up the joint with some texture? Hold the pour! And bring on the concreteform liners. A form liner is a plastic or rubberbased pattern mold that gives a textured finish to poured concrete. A number of concrete supply companies, including Symons, Fitzgerald, and Greenstreak Plastics, offer form liners. You can pick either from the stock liner patterns, or you can have a custom design produced. There are three different kinds of form liners, which vary in reusability and price. Thermoformed plastic is the cheapest, and it is best for small projects. A textured pattern