Double Glazed Tilt and Turn Windows
Tilt-and-turn is the most common type of window in Germany, where it was first developed, and is popular elsewhere in Europe. In Europe it is usual for these to be of the “turn first” type. i.e. when the handle is turned to 90 degrees the window opens in the side hung mode. With the handle turned to 180 degrees the window opens in bottom hung mode.
Most usually in the UK the windows will be “tilt first” i.e. bottom hung at 90 degrees for ventilation and side hung at 180 degrees for cleaning the outer face of the glass from inside the building.
In Australia, customers choose betwee uPVC, aluminium and timber frames for their double glazed tilt-and-turn windows. As you can see from the picture above, they can also incorporate internal venetian blinds.