Roll-up door or side sectional garage door with hip roof

Yes, I have heard about it too, but I didn't think it would be so extreme at such "low" outside temperatures. It was just about 18 degrees outside. And yes, it faces southwest and the sun shines on it. According to our seller, however, it is "no problem," or rather "not a big problem."

We will now try to get reinforcements for the gate, I even believe I remember that they were supposed to be included anyway...?

With the typical 7016, the problem with direct sunlight is well known - that was also one reason why we generally switched to 7012

And you think that makes a difference? Dark is dark We also don't have 7016 - Anthracite, but something lighter, although it didn't matter in this case.

That doesn’t necessarily have to do with the temperature. More with the angle of incidence. In spring and autumn, the sun simply shines on it at a shallow angle and then a dark gate just warps. It’s always like that with my neighbors opposite as well. In summer, at over 30 °C, they haven’t had any problems.