Sheet metal is of course a good alternative. Prefa roofs last forever and look good. But I also see problems there. There will definitely be hardly any more building materials. You just have to get used to this idea. Everything related to building materials is also energy-intensive at the same time. And energy in Germany, as well as electricity, will soon be unaffordable. The course for this is currently being set in Brussels and Berlin. Inflation control through interest rate hikes is also not favored by the ECB. The euro is falling like a stone. You can practically watch how our money loses value week by week. Drastic interest rate hikes accompanied by significantly rising inflation are threatening. A deadly mix. By the end of the year, we will see 7-8 percent interest rates. So you should focus on the "must have" and no longer on the "nice to have."