Styrofoam covers (so-called polystyrene shales) are ideal for insulating sewage pipes and central heating pipes – depending on the type of polystyrene up to +80 degrees and below zero? Negative? temperatures. The lagging consists of two parts with a male and female zipper. The lock improves insulation properties and facilitates assembly. The advantages of using lagging include good protection against liquids freezing in pipes, effective protection against heat loss from pipes, plus they are light, easy to install, and resistant to water (selected variants).