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PVC Windows

Stars by QFORT windows are divided according to the technical specifications of the PVC profiles into 4 Stars, 5 Stars, 6 Stars and 7 Stars categories, and are all certified for use even under severe weather conditions.

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Aluminium Windows

The windows for Stars series of QFORT are divided according to their technical specifications and functions, to 6Stars View, 6Stars, 5Stars View, 5Stars Invisible and 5Stars.

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Aluminium windows thermal insulation
QFORT.com  /  Windows  /  Aluminium  /  Heat insulation

Aluminium windows thermal insulation

Stars by QFORT

QFORT has designed the aluminium windows preserving the same protection and energy efficiency superior properties, the same for our entire range of products.

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Thermal insulation coefficient values of the windows Stars by QFORT:

Please find hereinafter the values of the thermal insulation coefficient relevant for QFORT thermal insulating windows.

The Ug coefficient represents the heat transfer value calculated at the level of the window glazing.

The Uw coefficient represents the heat transfer value calculated for the entire window.

The smaller the U coefficient is, the lower the heat loss and the better the thermal insulation of that building element are.

7Stars View profil

Standard equipment LowE Clear Insulating Glass
Uw = 1.30 W/m²K |
Double glazing Ug = 1.1 W/m²K
Uw = 0.90 W/m²K |
Triple glazing Ug = 0.6 W/m²K

7Stars profil

Standard equipment LowE Clear Insulating Glass
Uw = 1.34 W/m²K |
Double glazing Ug = 1.1 W/m²K
Uw = 0.95 W/m²K |
Triple glazing Ug = 0.6 W/m²K

7Stars Reversible profil

Standard equipment LowE Clear Insulating Glass
Uw = 1.44 W/m²K |
Double glazing Ug = 1.1 W/m²K
Uw = 1.08 W/m²K |
Triple glazing Ug = 0.6 W/m²K

6Stars View profil

Standard equipment LowE Clear Insulating Glass
Uw = 1.35 W/m²K |
Double glazing Ug = 1.1 W/m²K
Uw = 0.94 W/m²K |
Triple glazing Ug = 0.6 W/m²K

6Stars profil

Standard equipment LowE Clear Insulating Glass
Uw = 1.32 W/m²K |
Double glazing Ug = 1.1 W/m²K
Uw = 0.93 W/m²K |
Triple glazing Ug = 0.6 W/m²K

5Stars View profil

Standard equipment LowE Clear Insulating Glass
Uw = 1.42 W/m²K |
Double glazing Ug = 1.1 W/m²K
Uw = 1.00 W/m²K |
Triple glazing Ug = 0.6 W/m²K

5Stars profil

Standard equipment LowE Clear Insulating Glass
Uw = 1.42 W/m²K |
Double glazing Ug = 1.1 W/m²K
Uw = 1.03 W/m²K |
Triple glazing Ug = 0.6 W/m²K
Uw value is being calculated for a single wing standard window of 1230x1480mm, with an area of 1,82m² and warm spacer.
Uw and Ug values may vary according to the glazing unit type used. For a precise value, please check on QFORT offers.

Energy-Saving with Windows Stars by QFORT

QFORT aluminium windows are equipped, in standard, with SuperLowE insulating glass (super low emissivity), warm spacers (warm edge technology) with two or three glass panes, a system rendering them a high thermal insulation characteristic. All these characteristics translate into considerably reduced costs for heating during winter and cooling during summer.

Smaller U coefficient = Lower heat loss

Outdoor temperature
- 10°C
Pane/Glass surface temperature in the dwelling

4mm simple window pane
Ug = 5,8 W/m2K / -2,3°C

Traditional double-glazed window
Ug = 2,9 W/m²K / 9°C

Double thermal insulation glass
Ug = 1,1 W/m²K / 15°C

Double thermal insulation glass
Ug = 1,0 W/m²K / 15,6°C

Triple thermal insulation glass
Ug = 0,6 W/m²K / 17,9°C

Triple thermal insulation glass
Ug = 0,5 W/m²K / 18,5°C

Indoor temperature
+20°C
Energy
savings

0%

up to 39%

up to 71%

up to 73%

up to 82%

up to 87%

Moreover, a particularity of the Aluminium Windows Stars by QFORT is the heat barrier composing them. The 35 mm heat barrier zone and the insert of polyolefin foam in the frame and window frame allow the maximization of the energy efficiency.

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    *The warranty period may vary depending on the components and specifications of the product. Please refer to the warranty certificate for more details.