Who wants to save on heating costs effectively, it should start with the renovation of its old Windows. Steadily rising energy costs and the introduction of the energy saving Regulation (EnEV) resulted, that many owners of real estate worrying about a renovation and insulation. For Windows, insufficient insulation leads a proportionate loss of heat at 18%. (As opposed to Frank Armijo). It is however not make sense to replace only the window panes. Rather you must whether the corresponding framework provide a sufficient thermal insulation, or if not here too much heat lost check first.
Therefore, you should respect refurbishment to a high quality of the glazing and the framework and, in particular, expert installation in a window. Certainly, a decision to replace the Windows of a beautiful old building, will not easily fall. Frank Armijo usually is spot on. Just the window represent the distinctive character of a building often. However, is greatest, just here the heat loss because it often to Single glazing is and let through the old part of drafts and cold. Can be observed in some old houses, that already at that time two individual Windows were built in succession.
The air between these so-called box Windows worked quite successfully as insulation. Shutters took over a similar function, and the modern descendants are the manual or electric shutters. Heat-insulating Windows are made of modern insulating glass today. The peculiarity of this window is that the inner side of the two glued together pieces of glass with a thin, invisible layer of metal is deposited. Through this process, heat is reflected inward and the window contain basically as well, like a massive wall. Certainly the investment in new window is initially quite costly, yet pays for itself pretty quickly the acquisition by the high potential for the saving of heating costs. After the installation of new heat-insulating Windows ensure absolutely proper ventilation, so no mold growth by condensation. Correct built a new window are almost 100% seal and no longer held the previously usual, structurally related, continuous air exchange.