Glossary

frame – fixed part of window installed in the wall in which leaf or fixed (unopenable) glazing

leaf – openable, hinged or sliding part of doors and windows. Glazing is located in it.

Engineered timber – basic semi-finished product for manufacturing of wooden windows. It is a multilayer laminated timber the cover lamellas of which are made of high-quality material in radial cross-section. It has high strength and dimension stability.

building depth – frame thickness of Euro windows, scuntion windows or entrance doors in mm. As a general rule, standard products with larger building depth have better thermal-insulation properties. As to composite windows the thickness of window frame including aluminium cladding is regarded as building depth.

PUR panel – wooden massive structure filled with insulation material and cladded plyboard.

window column (“stulp”) – at two-leaf windows it is (“imaginary”) joint of both leaves

column – at two-leaf windows a (real) column between them

scuntion – piedroit kastel between two frames of scuntion windows

piedroit – designation of wood glue timbers. It is the most special agglomerated material based on wood

heat transfer coefficient – the most important window technical parameter that expresses the amount of thermal energy that penetrates through window or door. Its volume is influenced by thermal properties of frame and glazing. Thus the lower the value of heat transfer coefficient, the better the thermal-insulation properties are.

sound attenuation – an important feature particularly for buildings near busy crossroads, railways and airports is perfect sound insulation property of windows. Improving sound insulation properties is attained through the use of various glass types.

fix – the term for unopenable window. Glass is put straight in the frame.

hardware – window components by means of which the window is opened and closed.

profile –is the shape of leaf and frame including all additions in cross-section. It can vary as to design, building depth and installed accessories, for example by the amount of sealings or applied aluminium cladding for composite windows.

glaze beds – it is located on the inner side of windows and doors and ensures fixing insulation glazing into leaf or frame

thermal bridge – the place where increased loss of thermal energy occurs (e.g. lintels, window jambs, reinforced concrete rings, etc.). In wintertime, thermal bridge has cooler surface in the interior, in the exterior on the contrary warmer surface than surrounding structure. The objective is to prevent loss of heat, i.e. interrupt thermal bridge.