The renovation frame system is used to install windows without removing the old frames. The specificity of this type of window lies in the use of special renovation frames with a so-called masking profile, which covers the wooden frame to create a characteristic band on the inside, while on the outside we can use special casing profiles. The masking profiles in the frames have different widths, but it is also possible to cut them to suit specific needs.

There is then no need to dismantle the old timber (or other) frames. The renovation frames have a lower height, so that the glazing area is not significantly reduced due to the installation on the old frame. With such an installation, the risk of damage to the building façade is avoided, the window replacement time is accelerated and some finishing work (repair and painting) is avoided.