Wooden/aluminium windows combine many of these advantages. Different types of wood give the inside cosiness and warmth. The profile of the system is designed to be like a second skin on the wood, with the result that the wood does not need to be painted ever again. In addition, shapes and colours are virtually unlimited. The life of the window is considerably lengthened by the aluminium profile, and in this way the investment is cost-effective after only a short period of time.