Building your own mechanical vent to Platon mat in the basement, has anyone done it and can offer tips?

[Grillen]

I have installed plasterboard on the walls in the basement on metal studs and am now planning to install Platon membrane with click flooring on top. The basement isn't damp since we drained it a year ago, but I'm considering installing a mechanical ventilation system for the floor while I'm at it, to be extra cautious.

However, when I look at ready-made solutions for Platon membrane, they cost 10,000 SEK or more just for the ventilation, and I'm not planning to spend that much on this.

Is there anyone who has built their own version of mechanical ventilation for the floor, and possibly even the walls, who can share tips on a good fan that is quiet and provides good suction, as well as the appropriate duct size? I was thinking of placing the duct in one corner of the room where I already have drain pipes that need to be enclosed, and I'd like to keep it as discreet as possible.

 

[nallepu]

Drained around my house and installed Platon boards on the outside. A layer of 20 cm earth boards and to make it waterproof, a layer of styrofoam and landscaping fabric on the outermost layer. In the basement, I wanted a cinema and music room of 25 square meters. In another room, I wanted a large model railway room of about 30 square meters. To make it cozy, I installed metal studs, OBS boards, and gypsum. Unfortunately, moisture came up through the bottom slab, so there was a strange smell from wet gypsum, and I tore everything out. Mounted wooden studs at the top of the wall and hung wall-to-wall carpet on the wall and floor. I am very satisfied with the result. My girlfriends were also glad to get rid of all the big black spiders hiding between the wall and the plasterboards. If there's no moisture, there are no spiders in the basement.

 

[MoveMe]

Drained the house and put Platon boards on the outside. A layer of 20 cm ground boards and to make it waterproof, a layer of Styrofoam and ground fabric on the outermost part.
In the basement, I wanted a cinema and music room of 25 square meters. In another room, I wanted a large model railway room of about 30 square meters.
To make it cozy, I put up metal studs OBS boards and gypsum. Unfortunately, it turned out that moisture was coming up through the bottom plate, so there was a bit of a strange smell of wet gypsum, so I tore everything out. Put up wooden studs at the top of the wall and hung wall-to-wall carpet on the wall and floor. I am completely satisfied with the result. My girlfriends also thought it was nice to get rid of all the big black spiders that hid between the wall and the gypsum boards. If there is no moisture, there are no spiders in the basement.

Is wall-to-wall carpet better than gypsum?