Uw values for uPVC parallel slide & tilt doors

The U_w values given below refer to the sample size. The sample size refers to a single-sash window with a width of 1230mm and a height of 1480mm. All U_w values from German manufacturers are determined using this window size. As the window gets smaller, the U_w value goes down accordingly. For larger windows, the U_w value generally improves. Please note that the warm edge (thermally separated edge seal) is required to receive funding from the KfW (Reconstruction Loan Corporation). The specified U_w values also apply to parallel slide & tilt doors; since the dimensions of a parallel slide & tilt door are larger than those of the sample window size, better Uw values are achieved for parallel slide & tilt doors.

Uw value profile IDEAL 4000

Glass U_g value W/(m²k)	Frame U_f value W/(m²k)	Window U_w value insulating glass edge seal aluminium W/(m²k)	Window U_w value insulating glass edge seal KSD W/(m²k)	Window U_w value insulating glass edge seal Swisspacer Ultimate W/(m²k)
1.1	1.3	1.3 (1.33)	1.3 (1.26)	1.2 (1.24)
1.0	1.3	1.3 (1.26)	1.2	1.2 (1.18)
0.7	1.3	1.1 (1.05)	1.0 (0.99)	1.0 (0.97)
0.6	1.3	1.0 (0.98)	0.9 (0.92)	0.9 (0.90)

Table of Uw values for IDEAL 4000 profiles according to EN ISO 10077-1, see comments 1) 2) 3)

IDEAL 4000 - profile section

Uw value profile IDEAL 5000

Glass U_g value W/(m²k)	Frame U_f value W/(m²k)	Window U_w value insulating glass edge seal aluminium W/(m²k)	Window U_w value insulating glass edge seal KSD W/(m²k)	Window U_w value insulating glass edge seal Swisspacer Ultimate W/(m²k)
1.1	1.2	1.3 (1.29)	1.2 (1.23)	1.2 (1.21)
1.0	1.2	1.2 (1.23)	1.2 (1.17)	1.1 (1.14)
0.7	1.2	1.0 (1.02)	1.0 (0.969)	0.9 (0.94)
0.6	1.2	0.9 (0.95)	0.9 (0.89)	0.9 (0.87)

Table of Uw values for IDEAL 5000 profiles according to EN ISO 10077-1, see comments 1) 2) 3)

IDEAL 5000 - profile section

Uw value profile IDEAL 7000

Glass U_g value W/(m²k)	Frame U_f value W/(m²k)	Window U_w value insulating glass edge seal aluminium W/(m²k)	Window U_w value insulating glass edge seal KSD W/(m²k)	Window U_w value insulating glass edge seal Swisspacer Ultimate W/(m²k)
1.1	1.1	1.3 (1.26)	1.2	1.2 (1.18)
1.0	1.1	1.2 (1.19)	1.1 (1.13)	1.1 (1.11)
0.7	1.1	1.0 (0.99)	0.9 (0.92)	0.9
0.6	1.1	0.9 (0.92)	0.9 (0.86)	0.8 (0.84)

Table of Uw values for IDEAL 7000 profiles according to EN ISO 10077-1, see comments 1) 2) 3)

IDEAL 7000 - profile section

Uw value profile IDEAL 8000

Glass U_g value W/(m²k)	Frame U_f value W/(m²k)	Window U_w value insulating glass edge seal aluminium W/(m²k)	Window U_w value insulating glass edge seal KSD W/(m²k)	Window U_w value insulating glass edge seal Swisspacer Ultimate W/(m²k)
1.1	1.0	1.2 (1.23)	1.2 (1.17)	1.2 (1.15)
1.0	1.0	1.2 (1.16)	1.1	1.1 (1.08)
0.7	1.0	1.0 (0.95)	0.9 (0.89)	0.9 (0.87)
0.6	1.0	0.9 (0.89)	0.8 (0.82)	0.8

Table of Uw values for IDEAL 8000 profiles according to EN ISO 10077-1, see comments 1) 2) 3)

IDEAL 8000 - profile section

Uw value profile energeto 8000

Glass U_g value W/(m²k)	Frame U_f value W/(m²k)	Window U_w value insulating glass edge seal aluminium W/(m²k)	Window U_w value insulating glass edge seal KSD W/(m²k)	Window U_w value insulating glass edge seal Swisspacer Ultimate W/(m²k)
1.1	1.0	1.2 (1.21)	1.2 (1.15)	1.1 (1.13)
1.0	1.0	1.2 (1.15)	1.1 (1.08)	1.1 (1.06)
0.7	1.0	0.9 (0.94)	0.9 (0.88)	0.9 (0.85)
0.6	1.0	0.9 (0.87)	0.8 (0.81)	0.8 (0.79)

Table of Uw values for energeto 8000 profiles according to EN ISO 10077-1, see comments 1) 2) 3)

energeto 8000 - profile section

Uw value profile energeto 8000 ED

Glass U_g value W/(m²k)	Frame U_f value W/(m²k)	Window U_w value insulating glass edge seal aluminium W/(m²k)	Window U_w value insulating glass edge seal KSD W/(m²k)	Window U_w value insulating glass edge seal Swisspacer Ultimate W/(m²k)
1.1	1.0	1.2 (1.23)	1.2 (1.17)	1.2 (1.15)
1.0	1.0	1.2 (1.16)	1.1	1.1 (1.08)
0.7	1.0	1.0 (0.95)	0.9 (0.89)	0.9 (0.87)
0.6	1.0	0.9 (0.89)	0.8 (0.82)	0.8

Table of Uw values for energeto 8000 ED profiles according to EN ISO 10077-1, see comments 1) 2) 3)

energeto 8000 ED - profile section

Windows with a glazing heat transfer coefficient of U_g < 1.9 W/m²K may be specified using the standard dimensions of 1.23 m x 1.48 m.
According to EN ISO 10077, U_wvalues < 1.0 W/m²K are shown with 2 decimal points.
The U_w values given in brackets are not rounded and are for information purposes only.

How is the Uw value of a parallel slide & tilt door calculated?

With a uPVC parallel slide & tilt door, the U_w values are calculated using the individual U values of each window frame and glazing, as well as the heat loss along the edge of the glass. For the sake of comparison, a standard window size of 1230 x 1480 mm is usually used for the calculation, but it can generally be assumed that a larger window will result in a lower value.

A thermally separated edge seal along the insulating glass - the so-called "warm edge" - further improves the thermal insulation of the entire door.

The heat transfer coefficient of a parallel slide & tilt door made of uPVC determines whether a parallel slide & tilt door can be classified as suitable for passive houses and also whether funding from the KfW is possible. Energy savings not only protect the environment, they also make an immediate difference on your energy bill.

The difference between a _Uw value of 3.5 and a value of 0.83 can make a difference of more than 1000 litres of heating oil per year for an area of 30 m².

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