Frequently Asked Questions

Windows not only decorate a home but provide its residents with safety, warmth and quiet. When choosing windows, it is worth considering several very important specifications.

The most important is the heat transfer coefficient of the entire window, expressed as Uw. The lower its value, the better. Windows with the lowest possible Uw maintain optimal temperature in the interior, are energy-saving, and meet passive construction standards (Uw=0.8 W/m²K). A house’s thermal insulation is also affected by: the width of the installation profile (>80 mm), type of glazing package (triple glazing is the warmest) and the application of a pane spacer.

When considering the tightness of windows, it is worth checking what fittings and sealing system have been applied in them. Abakus Okna installs the best fittings in their class:  Roto NX with RotoSil Nano coating. To improve thermal insulation, we install 2 locking gaskets as well as an additional central gasket that improves windows’ soundproofing properties.

Resistance to burglary is a specification that is of immense importance, particularly in single-family houses or apartments on the ground floor. Abakus offers fittings up to class RC2. Abakus also offers anti-burglary glazing packages that are more difficult to shatter. In this way, they afford optimal protection and security.

The Uw coefficient is a window’s heat transfer coefficient, which tells us how much heat escapes through the entire window (not just through the glazing – its heat transfer coefficient is expressed as Ug). The lower its value, the warmer the window. Energy-saving windows have a coefficient no higher than 1.3 W/m²K, and the Uw of windows meeting passive construction standards may not exceed 0.8 W/m²K. The best manufacturers, like Abakus Okna, offer windows with a heat transfer coefficient below 1.0 or even 0.8 W/m²K, which are warm, energy-saving, and passive.

PVC and aluminum are completely different materials that are suitable for different applications. The choice of material depends on the purpose and needs.
If we are looking for modern, resistant and rigid solutions with multiple glazings, aluminum is the right choice. Until recently, aluminum was mainly applied in hotels and office buildings, but lately, it has become a staple in modern homes with minimalistic designs.
PVC is much more commonly applied for homes and apartments due to its much better insulating and energy-saving capabilities. PVC windows are used in passive construction, which is very popular today.
It is also possible to combine materials. Abakus offers bluAlu windows>>, which combine a thermal PVC profile with the modern appearance afforded by aluminum overlays.

The profiles of PVC windows consist of chambers. The heat transfer coefficient is lowest (and hence, best, warmest) in windows with a wide profile – consisting of 6 or more chambers.

Heat is best conserved when PVC frames have a width of over 80 mm. These are the widest windows available for sale as well as the most optimal in terms of functionality.

Window profiles are the basis of every window’s design. The better the profile used to manufacture a window, the stronger the structure of window frames, casements and muntins. Abakus Okna manufactures windows based on profiles from the best manufacturers, Salamander and Rehau.

Thermal spacer bars, or pane spacers, must have low thermal conductivity. The application of a thermal spacer bar increases the temperature of glazings and reduces condensation, which in turn increases the maximum tolerable air humidity in the room (without fear of condensation on interior glazings).

The number of gaskets and the material used to make them affect the airtightness and watertightness of the structure, above all. A gasket is a very important “trifle” and is an under-appreciated part in windows. Windows from our Standard red line are systems with two gaskets, and windows from our Premium blu line have three gaskets. Window designs with a central gasket (blu line) are decidedly tighter than designs without a central gasket – in terms of both air permeability and watertightness.

The Roto Secustic handle is a technically advanced solution certified by the RAL mark. Tests have demonstrated that it has the highest reliability and convenience of use for many years. It has a designer shape that matches both classical and modern interiors.

Abakus Okna grants a 5-year guarantee on all windows and balcony doors made of PVC, while HS and PSK balcony doors as well as exterior doors are covered by a 2-year guarantee. We ensure the best product quality and the pleasure of failure-free operation.

The essence of a passive house is the acquisition of thermal energy from the outside with the simultaneous limitation of its emission to the outside.

Passive windows have a lower heat transfer coefficient. It is accepted that energy-saving windows have a coefficient no higher than 1.3 W/m²K, and the Uw of windows meeting passive construction standards may not exceed 0.8 W/m²K.

Windows with the best energy-saving class are Premium products from the blu line: bluEnergy, bluSynego, bluDecoro, bluIntero, bluAlu. They also meet passive construction standards.

The price of a window is affected by many factors. They include: the applied glazing package, the profile used to build the window (Salamander bluEvolution 82mm/Rehau Synego 80 mm) and accessories (e.g. the application of a thermal pane spacer). So energy-saving indicators are not what determines price.

To find an Abakus Okna distributor, we recommend visiting the Distribution network>> tab and using search filters. This way, it will be easy to get the address of the nearest distributor and their contact information.

The time until completion of an order depends on the specifications of windows, the time until the distributor receives the product shipment, the availability of a window fitter, the season of the year, etc. Before an order is placed, the distributor is responsible for notifying the customer of the approximate time to completion.

You can find all the necessary information on possibilities of collaboration with Abakus Okna in the For Distributor’s tab>>. There, you can check out our model of cooperation and the benefits that our partners gain by entering into a business relationship with us.