Historical Windows

COUPLED WINDOW EV31/IV68

Sash of the coupled window EV31/IV68 consists of two parts. It is based on a 68mm thick standard German system sash with a single-chamber 24mm insulating glass unit and two sealing contours. A 31mm thick outer sash with 4mm glass is attached to it and locked using special fittings forming a 100mm thick sash construction. When looking from the outside, the sash is practically in the same plane with the frame visually imitating the historic chamfered window. The coupled sash opens inwards. When the window is open, the outer sash can be released and opened to wash the glasses from the inside. The thickness (construction depth) of the frame is 78mm.

Thermal conductivity coefficient of the window UW=1.0 W/m2K (according to DIN EN ISO 10077-1), sound absorption 36 dB.

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DESCRIPTION OF HISTORICAL WINDOWS

Coupled or Swedish window – it has two joined sashes with shared hinges. They both open together, but must be separated to clean the glasses between sashes. Normally, the sashes of chamfered windows open outwards and the box is not embedded in the facade of the building, so the sashes are exposed to precipitation. The chamfered window has a simple design, without expressive decoration, flat (not embedded in the facade). Such windows were widely used in the XX century. A modern chamfered window has insulating glass units and high-quality sealing integrated in the inner sashes.

WATER-BASED VARNISHES AND PAINTS

The finish system of wooden windows produced by the Finnish company TEKNOS offers environmentally friendly water-based varnishes and paints. The standard offer includes 54 tones of varnish and covering paints according to RAL or NCS catalogues.