Wall materials in basement - help!

[kizzy]

I am building a room in the basement of our house. I have framed it with 70mm steel studs. I will install insulation, and then the boards will be mounted on the side facing the room. There is a 300mm air gap from the studs to the concrete wall. The board closest to the room is intended to be OSB, but now to the question. The board to be mounted first on the studs, which ones should be used there. I have long considered Minerit, but they cost a fortune. I received a tip about Humidboard 2.0, which I can get for half the price compared to Minerit through a friend. At the same time, you don't want to skimp on such an important part of the room, and you want to avoid having to tear down the walls after a while just because you chose the cheaper material. So will Humidboard be sufficient? Or do I need to pause the project and save up to afford the more expensive material? When Anticimex was here, there was no noticeable moisture in the basement, but all basements always have some level of moisture. I will also install natural ventilation on all the walls so the air will not remain completely still behind the walls.

 

[Thomas_Blekinge]

Are you going to have a 300 mm air gap behind the rules? Will this space be inspectable? What purpose does it serve? It takes up an enormous amount of space.

 

[kizzy]

Are you going to have a 300 mm air gap behind the studs? Will this space be inspectable? What is its purpose? It takes up an enormous amount of space.

This is because there is a concrete pillar on both long sides that holds up a "stålregel" in the ceiling. So at the pillars, which are 200mm wide, there won't be an air gap but to keep the walls straight there will be such an air gap. Inspection hatches will be available where the electricity will be connected.

 

[para]

You should have built a wall of Leca instead of metal studs and boards. Are you going to use OSB as the surface layer?

 

[kizzy]

You should have built a wall of Leca instead of metal studs and panels. Are you going to have OSB as the surface layer?

The surface layer isn't set in stone. But it's going to be painted later.