Windows are subject to heavy mechanical stress and are permanently exposed to environmental influences, which is why it is enormously important to pro
When you convert the attic, you gain valuable living space. What do you have to pay special attention to - and what does an attic conversion cost?
Switzerland is banning more and more light bulbs that contain mercury. Now is the time to switch to energy-efficient LED lamps.
With ventilation you improve the indoor climate and living comfort. We present the two most important ventilation systems and their prices.
