Build your own sauna with a sloping roof - suggestions/notes/plans

So, we were successful with the choice of materials.

We are taking spruce for the profile boards, aspen for the benches. He had a log cabin sauna with that material combination there, and both of us liked it immediately. Stone pine would have also appealed to us for the walls, but it costs more than three times as much as spruce.

I talked with him for a while, and I really liked his explanation regarding the combo stove. He has one at home himself and wouldn't want to miss it. This alleviated my wife's skepticism about the necessity of it, and we will get a combo stove.

What I found very confusing, however, was his statement about the wall construction:
He said that it is absolutely necessary to ensure that the insulation comes directly on the plaster with no air in between. Huh? I didn't really go into it because I was confused. After all, that is completely the opposite of what is recommended here and everywhere else.
When we alternatively talked about the log cabin sauna, he recommended a distance of 10cm to the wall.

Regarding the benches, we will probably make a lying surface, but also the upper bench, which can simply be folded up, so we are flexible.

Now I have to think about the stove, if anyone has a recommendation, feel free ;)
By choosing spruce for the walls, it is now also financially feasible, but I don't want to spend more than €1,000 for the stove + control.

We have an EOS BiO Filius and are very satisfied.

Since you build yourself, you can check out Bauer-Holz, there you get Swiss pine for a "reasonable" price. That's where I ordered all our Swiss pine wood.

Since you build yourself, you can take a look at Bauer-Holz, there you get pine for a "decent" price. That's where I ordered all our pine wood.

Thanks, which Bauer Holz do you mean? The one in Siegburg?

no in Austria. You have to buy the Zirbe where it actually grows.

Or South Tyrol. I remember a sauna builder at the [Handwerksmesse] in Munich, who came from South Tyrol and the [Zirbensaunen] were surprisingly affordable. But as I said: my husband doesn't like the smell at all - so I didn't have that problem.