We do not recommend rooftops or buildings as suitable mounting points. Turbines near roof ridges will receive only weak, turbulent winds. Field trials have found that building mounted turbines perform poorly, producing only a small fraction of the energy they could produce under more suitable conditions (see for example the Warwick Wind Trials). In addition, turbines can resonate in the wind and produce vibrations inside the building. The forces acting on the turbine in high winds can damage the structure of the building.