Sheet material on concrete slab?

[heij]

Visit a hardware store and you will find out what is available.
There are rotgolv that are 12mm thick and sponta that are thinner than that.

 

[Fredrik_1976]

12 mm tongue and groove particle board is not sold at places like Bauhaus, so instead I have to shop at places like Beijers. Rotgolv is about twice as expensive as a regular 12 mm particle board.

 

[heij]

Regarding the price between different places of purchase, I can't answer that, but it's very possible to call around to various stores/warehouses to check where you can shop the cheapest.
If it is, as you claim, twice as expensive, I would still choose real root or gypsum.
Unfortunately, it's not cheap to build and renovate.

 

[anders07]

Rotgolv is chipboard too.
The boards are probably left without fixing them (guessing hesitant about that)
A homogeneous board like with a real rotgolv is clearly better.
Otherwise, I think the solution proposed seems a bit like a DIY solution.

I am a DIY enthusiast! And proud of it!

Of course, a homogeneous board is better. Ideally, you would tear up all the old material, raise the joists by 12mm, and lay completely new subfloor chipboard, but this is about raising an existing subfloor, not creating a new one!

 

[heij]

the increase becomes the new basis

 

[Fredrik_1976]

I have now laid floor gypsum. Glued the boards with PL600. I have a problem with minor "ridges" on the concrete slab, which causes some boards to "ride" on the ridges, maybe 3-4 boards. This causes them to gap a few mm against the boards that lie flat. Do you have any good suggestions for solutions?

 

[heij]

I have now laid floor gypsum. Glued the boards with PL600. I have a problem with smaller "ridges" on the concrete slab which makes some boards "ride" on the ridges, maybe 3-4 boards. This causes them to have a few mm gap against the boards that lie flat. Do you have any good suggestions for solutions?

Hi Fredrik

Too bad you didn't check the floor before laying the boards.
You mention that they have gaps, in what way?
Is it that the boards are not in contact with the floor or?
Or do you have a height difference between the boards.
If it is a matter of a couple of mm, you can lay double footfall sound insulation on the lower spots and just single footfall sound insulation on the top to minimize the difference.

 

[-MH-]

I have roughly the same situation as you, @Fredrik_1976 How did it end up?

I'm leaning towards 12mm tongue and groove chipboard flooring, not too expensive after all. In that case, it will be floating with plastic and lumppapp underneath.

 

[Fredrik_1976]

I have roughly the same situation as you, @Fredrik_1976 How did it turn out in the end.

I'm leaning towards 12mm tongue and groove floor chipboard, not too expensive either. In that case, it will be floating with plastic and fiberboard underneath.

Many years ago now, but the floor turned out well 👍🏻