When deciding to install double-glazed wood windows, you need to understand that they are very different from the usual plastic windows and select them carefully. To buy good quality wooden products, first of all, you need to pay attention to the appearance of the wood. The surface of the frame and window sill must be smooth, without chips or cracks. There should also be no knots on the frame - they are considered a defect.
When purchasing wooden window systems, you need to be prepared that they will have to be looked after - every few years, the wood must be treated with stains and varnished. This is done both to protect against pests and to preserve the appearance.