Optimal fitting of windows

Have your windows at home been replaced? Maybe it occurred to you if there is no other option than to fit new windows to the same position as that of the original frames. None of us likes the dewy glass and excess moisture around the frame. If you, as users, would moreover appreciate a comfortable wide sill, larger viewing angle and more light in the room, our solution could appeal to you. Currently, one of the most desired alterations of buildings is their insulation. The reason is the rising cost of heating, and, as a result of price rises, interest in additional insulation (or insulation of the building at the time of construction) is increasing in the case of houses as well as blocks of flats.

The VŠB – Technical University of Ostrava development workshop has had many years of experience in insulation of buildings and thanks to various tests, they found a clever way of fitting windows with economic, thermo-technical, aesthetic and, above all, user benefits.

When using thick insulations, windows seems too recessed in the perimeter wall. The aim is, therefore, to move the window as close to the exterior as possible and align it with the plane of the outer face of the wall support structure. If the window is in this position, the subsequent outer insulation is easier and faster, and moreover, they achieve better thermal insulation properties.

Their next improvement proposal is so called chamfer, or rather the opening of vertical walls around the windows. Similarly, openings into the stone walls of medieval castles were built let in more sunshine. The method of adjusting windows called “chamfer jamb” saves material, provides better view, and it looks interesting from the outside. Tests have shown that the chamfer surprisingly has no impact on the deterioration of the insulating properties in critical surroundings of the window. The basic condition remains careful covering of the largest possible area of the window frame with thermal insulator.

Their solution for windows is protected as industrial property. Their introduction into common construction practice is a long-term process. For the future, there is a realistic assumption of its general use when replacing windows and in home insulation.

The products come from the developmental workshop of Pavel Oravec and Marek Jašek from the Faculty of Civil Engineering, VŠB – Technical University of Ostrava  https://www.fast.vsb.cz/en