PVCtriple-glazedthermal break

casement roof window
casement roof window
casement roof window
casement roof window
casement roof window
casement roof window
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Opening system
thermal break, soundproofed
Technical characteristics
security, burglar-proof
Other characteristics
residential, energy-saving

Max.: 220 cm (86.61 in)

Min.: 60 cm (23.62 in)


Max.: 140 cm (55.12 in)

Min.: 60 cm (23.62 in)


Flat roof window features a sleek modern look, characterized by excellent thermal insulation parameters. The structure of the frame is the same as for flat roof windows with a dome however the main difference lies in the glazing unit which is bonded using modern manufacturing technologies to produce a highly aesthetic and innovative design. These windows are suitable for roof pitches between 2 and 15 degrees. Color Range The innovative flat roof window D_F ColourLine allows you to match the colour of the window finish with the existing roof design. A wide range of colours in accordance with the RAL Classic Palette. Glazing Units These windows are equipped with an energy-efficient, triple DU6 glazing unit. The external glass 6mm thick is toughened while the internal glass is laminated and anti-burglary P2A class. Should the pane crack, shards of glass do not pose a danger but remain on the laminate film. Heat transmittance co-efficient for the whole window is U=0.70 W/m2K (to EN 14351-1). The window is also available to order with a quadruple U8 glazing unit. Heat transmittance co-efficient for the whole window is U=0.64 W/m2K (to EN 14351-1). Such excellent parameters make the window suitable for use in energy-efficient and passive buildings. The excellent sound insulation The DEF flat roof window with a double-chamber DU6 glazing unit has been tested for sound insulation during heavy rain. The result obtained, LIA= 36 [dB]* confirms the high level of resistance against sound penetration, therefore the window is ideal for places where peace and silence are welcome.


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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.