Remove vinyl floor to replace drain?

[Kegel]

Hello!

I'm looking at buying a house built in '68. A single-story house with a basement in a sloping terrain. There are quite a few renovation needs, including old cast iron pipes and old bathrooms.

My thought was to address the old pipes and bathroom in the basement before moving in, by sawing up the concrete slab and laying new pipes.

However, I'm starting to wonder about the construction of the basement floor. I haven't seen any blueprints yet, but the information available about the basement floor is that it is a "built-up floor" and that it has a vinyl floor. Is it common for the vinyl to just be glued to the concrete slab, or what does "built-up floor" mean?

Do I need to tear up the entire floor to be able to saw through for new pipes, or should I be able to saw through the vinyl/whatever it is, lay new pipes, cast again, and then level the hole after the old floor and lay a new floor on top?

There is also ground radon, and I've understood that it can get worse if you remove the vinyl in the basement, so that also makes me want to leave as much of the vinyl as possible.

I'm not really sure which category I should post this under, so admin is welcome to move it to the right one.

 

[Demmpa]

In the bathroom with plastic flooring, the mat is likely glued directly onto the concrete slab.

You cannot leave the existing plastic mat as is and lay a new one on top, because there shouldn't be two waterproof layers on top of each other; it can be challenging to make the floor even at the joint between untouched and dug up without leveling the entire floor with self-leveling compound.
It is likely difficult to achieve approved strength between the existing plastic flooring and the leveling compound.

 

[BirgitS]

Could it be that a raised floor only applies to residential rooms, for instance, they have framed up the floor level to be able to place insulation there?

 

[Kegel]

In the bathroom with vinyl flooring, the mat is likely directly glued to the concrete slab.

You cannot leave the existing vinyl flooring and lay a new one over it, as there should not be two moisture barriers on top of each other, it can be difficult to get the floor level at the junction between untouched and excavated without leveling the entire floor with self-leveling compound.
It is likely difficult to achieve approved strength between the existing vinyl flooring and the self-leveling compound.

Unclear of me. The bathroom should of course be completely demolished. I was thinking more about the continued pipe systems that should then be routed in the corridor outside the bathroom. And if you need to take up the entire floor there.

 

[Kegel]

Could it be that "uppbyggt golv" only applies to living rooms, for example, where the floor level has been adjusted with joists to add insulation?

But isn't that usually just called "uppreglat golv"? And not "uppbyggt golv"? Or do they mean the same thing?

 

[BirgitS]

But isn't it usually called a raised floor? And not a built-up floor? Or do they mean the same thing?

There are probably no clear definitions of such terms. Different people say slightly different things, and it has likely changed over the decades as well.

Unclear of me. The bathroom will of course be completely torn out. I was thinking more about the continued drainage pipes that would then be laid in the corridor outside the bathroom. And whether the entire floor needs to be taken up there.

Depending on the condition, it might be possible to leave the old pipes in the corridor until it's time to renovate the corridor. It must be inspected with a camera.