Replacing bottom sills, and ventilating the floor?

[leguanen]

We own a house built in the 70s. It's a slab-on-grade foundation with insulation underneath, and the bottom sills are down in the slab. There are glued vinyl floors on the slab. The sills are damaged by moisture, and mold has formed under the floors. Our neighbors have a similar house, and they have removed the floors; cut all the walls about 1.20 meters up and replaced the bottom sills with steel sills, and the wall studs have also been replaced with steel studs. They have a mechanically ventilated floor with a Platon mat. Now we are going to start fixing our ground floor. We are also going to replace the sills and wall studs with steel, but we don't know what to do with the floor. For example, can you put a moisture barrier on the slab to prevent moisture from coming up from the ground, or do you have to ventilate the floor? It seems both troublesome and costly.

 

[imported_Byggaren]

The simplest way is to remove the existing plastic mats and lay down a blue Platon, clapper foil, and 22 mm floor chipboard, with a carpet on top and Syninge ventilated baseboards around. However, this means the doors must be cut down (or raised) and kitchen fittings, etc., need to be raised (and as you point out, it's a lot of work). But there is no shortcut to a slab that absorbs moisture from the subsoil.
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Byggaren

 

[leguanen]

Thank you for the answer, Byggaren.
Then I guess it's just a matter of starting to tear down the mess. It's hard to face, but if there's no shortcut, then there's none.
Do you know what it might cost to hire a builder to do it? (applies to 100m2)
/Leguanen