Warm installation

Installing windows in the insulation layer

Installing windows in an insulation layer using THERMOLIT profiles not only saves energy used for heating, but also has more advantages compared to other installation methods:

• the closer the window is installed to the outside, the more light enters the premises;
• improves the acoustic insulation of rooms;
• it is easier to maintain a suitable microclimate indoors;
• Windows become less foggy, so moisture does not accumulate at the edges of the openings, preventing the appearance of mold.

Installing windows in the insulation layer

Installing windows in an insulation layer is a valuable thing. Builders and window installers appreciate the advantages of installing windows in an insulation layer.

Warm window installation

• “THERMOLIT” profiles are resistant to moisture, temperature fluctuations and, due to their excellent mechanical properties, are particularly suitable for use with high structural weights and wind loads;
• Problems that arise when installing windows with metal corners are avoided;
• Working time is reduced because windows are installed simply and quickly;
• Sealing foams and tapes can be used immediately;
• Windows are attached to the profile in the usual ways – with screws or mounting brackets;
• Using special polyurethane foam adhesives, the profiles are easily installed even on uneven masonry;
• Profiles can be cut with tools designed for cutting wood;
• Much less splicing, as the profiles are 2500 mm long.

Profile window installation width x height (mm)

• THERMOLIT 75×70
• THERMOLIT 80×70
• THERMOLIT 85×70
• THERMOLIT 90×70
• THERMOLIT 90×80
• THERMOLIT 90×95
• THERMOLIT 90×150
• THERMOLIT 90×200
• THERMOLIT 90×250
• THERMOLIT 110×95
• THERMOLIT 150×110
• THERMOLIT 150×180

Heat transfer coefficient U (W/m²K)

• 0,51
• 0,47
• 0,44
• 0,42
• 0,42
• 0,42
• 0,42
• 0,42
• 0,42
• 0,34
• 0,24
• 0,24

Window installation in the insulation layer with THERMOLIT PP window sill

Installing a window in an insulation layer with a THERMOLIT PP window sill – for even warmer and tighter window installation.

Profile window installation width x height (mm)

• THERMOLIT PP 35×30
• THERMOLIT PP 40×30
• THERMOLIT PP 45×30
• THERMOLIT PP 50×30
• THERMOLIT PP 55×30
• THERMOLIT PP 60×30
• THERMOLIT PP 40×40
• THERMOLIT PP 45×40
• THERMOLIT PP 50×40
• THERMOLIT PP 55×40
• THERMOLIT PP 60×40
• THERMOLIT PP 40×60
• THERMOLIT PP 45×60
• THERMOLIT PP 50×60
• THERMOLIT PP 55×60
• THERMOLIT PP 60×60

Heat transfer coefficient U (W/m²K)

• 0,85
• 0,77
• 0,72
• 0,66
• 0,60
• 0,56
• 0,80
• 0,72
• 0,66
• 0,60
• 0,56
• 0,80
• 0,72
• 0,66
• 0,60
• 0,56

Upon request, we can produce individual warm window installation profiles of other dimensions.

Prices for the warm window profile “THERMOLIT” and “THERMOLIT PP”:

Below you can download a PDF containing the prices of a warm window profile, you will see how much it costs to install a warm window in an insulation layer.

Installation instructions for high-density XPS profiles “THERMOLIT”:

Characteristics of extruded polystyrene foam used in the production of profiles:

The products do not contain chemical fire-retardant additives with bromine compounds that are dangerous to humans and the environment, so no toxic fumes are released during combustion, only carbon monoxide.

Expanded polystyrene is usually classified as E or F flammability class, but when covered with a layer of plaster and glass fabric mesh less than 3 mm thick, flammability class B (B-s1, d0) is achieved.

The polystyrene boards we used also achieved the best possible result in terms of smoke generation (-s1). This means that there was very little smoke. In the event of a fire, the boards start to melt when the internal temperature reaches 300 – 500°C (the softening point of the material is around 100°C, and the melting point is less than 200°C). This slows down the temperature increase inside the building, as thermal energy is used for the melting process. With non-melting insulation materials, the opposite is true: in rooms insulated with non-melting materials, the temperature rises very quickly above 1000°C, thus further increasing the damage caused by fire.