U values for glazed roofs
When glass is installed in a glazed roof, it results in a higher U value compared to a vertical installation in a facade.
The vertical middle point U value for glass increases as follows:
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15° inclination |
+ 0,3 W/m2K |
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30° inclination |
+ 0,2 W/m2K
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45° inclination |
+ 0,2 W/m2K |
U value for a glazed roof with a double glazing unit
and an aluminium spacer
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Share of profiles |
U value of glass (middle point),
taking into account the inclination angle
Aluminium spacer. |
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0,9 |
1,1 |
1,3 |
1,7 |
2,0 |
2,4 |
2,7 |
3,0 |
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5% |
1,3 |
1,5 |
1,7 |
2,0 |
2,3 |
2,7 |
3,0 |
3,3 |
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10% |
1,6 |
1,8 |
2,0 |
2,4 |
2,6 |
3,0 |
3,3 |
3,5 |
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15 % |
2,0 |
2,2 |
2,4 |
2,7 |
2,9 |
3,3 |
3,5 |
3,8 |
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For more information please contact our Architect Support
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U value for a glazed roof with a double glazing unit
and a warm edge spacer
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Share of profiles |
U value of glass (middle point),
taking into account the inclination angle
Warm edge spacer |
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0,9 |
1,1 |
1,3 |
1,7 |
2,0 |
2,4 |
2,7 |
3,0 |
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5 % |
1,1 |
1,3 |
1,5 |
1,9 |
2,2 |
2,5 |
2,8 |
3,1 |
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10 % |
1,3 |
1,5 |
1,7 |
2,1 |
2,3 |
2,7 |
3,0 |
3,2 |
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15 % |
1,5 |
1,7 |
1,9 |
2,2 |
2,5 |
2,8 |
3,1 |
3,3 |
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For more information please contact our Architect Support
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