Also, if you are worried so that in the house in winter it is very warm, then take care of the windows. A part of the heat also goes through them, the percentage of its loss is approximately twenty percent. It is not difficult to change the windows, you just need to call the master, and today it is done very quickly, much faster than your roof. The master will come, take measurements, and after a few days you will install new, good windows that will keep warm in the winter season. It is only necessary to choose the right manufacturer so that you are installed by those windows that will really maintain heat, and will not add new difficulties and problems for you. Windows should be large and bright, and this always creates the mood in any weather. If possible, set just such, large windows in your house.