Wherever roofs are drained, pipe systems made of highly stable materials are used. They form the basis of reliable wastewater drainage. Thanks to the push-in joint, an almost seamless pipe run is achieved. If media or utility pipes are required for water, electricity, gas and ventilation, individual pipe penetrations are used or, depending on the area of use, Multiflex flat roof penetrations are used. The ACO range of products also includes rain pipe gullies for connection to a downpipe or fill and vent pipes for heating oil tanks.