Ventilation ducts and chimneys

In many buildings, the ventilation ducts and chimneys present a particular challenge. Many of them are leaky and very difficult to access as they are often run inside walls. Leaky ventilation ducts and chimneys result in odour nuisance and bad indoor climate and present therefore a big problem to the residents and users of a building.

By using state-of-the-art methods for internal renewal of pipe systems in buildings, Aarsleff Pipe Technologies is able to renew almost any kind of worn and leaky ventilation ducts and chimneys. Our methods imply that in most cases, we do not have to demolish walls in order to renew ventilation ducts and chimneys. This means considerable money savings compared to traditional renewal methods. It also means that we are able to carry out even extensive renewal projects without major inconvenience to the residents and users of a building.

The staff of Aarsleff Pipe Technologies renews ventilation ducts and chimneys in places that are even very difficult to access. All we need is access to both the start point and the exit point. We are able to renew ventilation ducts and chimneys of all kinds of cross sections: round, square and rectangular. Joints and laterals present a particular challenge, and therefore, over the years, Aarsleff Pipe Technologies has developed special methods for sealing of joints and laterals.

In many buildings, especially residential buildings, the chimneys are no longer being used. In these cases we are often able to convert the chimneys into tight and durable ventilation ducts.