Can there be problems with damp pressure-treated sill plates even in houses with a basement? The risk shouldn't be the same as with a single-story house with a concrete slab directly on the ground, or am I thinking completely wrong?
Depends on the relationship between temperature and humidity inside the construction. It is RF that determines if there will be problems.
one should try not to have any trycktvirke in residential buildings
Exactly right, don't build that in!
I thought it was about an existing house with pressure-treated wood in it.
I thought it was about an existing house with pressure-treated wood in it.
It's about an existing 70s house. When reading online about people who have these problems, it's only houses with slab on grade that come up every time. Are houses with basements or split-level also at risk for this?
It's simply the case that it's only on a concrete slab that you cast the joists into the concrete.
Construction veteran
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kitko: even split-level houses have slab-on-grade unless you built on piers or have a modern house with 20-30 cm insulation under the concrete slab. In any case, NEVER embed or mount organic material studs. It will mold sooner or later. A concrete slab needs several years to dry.
For a 70s house with embedded studs, you just have to chisel away and decontaminate.
For a 70s house with embedded studs, you just have to chisel away and decontaminate.
Sure, but on the foundation slab/edge beam it is cast concrete or built with cinder blocks 2.5 meters up past the upper ground level.seniorkonsult said:
You don't have a stud construction with wooden walls down to the edge beam, do you?
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If it is built up on the foundation, one usually fills up inside. One hardly builds a "torpargrund" with that solution. And then you still have a casting in the floor construction=Same problems as slab-on-ground. I don't understand what the wall construction has to do with cast-in studs in the slab. The slope floor is still on the ground, right?
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Yes, we do. Our house is a split-level house with a wooden frame even in the basement. The slab extends about 10 cm beyond the sill. Next to the wooden frame are prefab concrete elements that are cast together, and there's a cast or built-up curb outside at the bottom edge.KnockOnWood said:
On top of this, there's a concrete floor slab, a new sill, and a wooden frame for the ground floor. The brick is built on the standing basement concrete elements.
We have no problems with any smell or moisture. But yes, we redid the drainage and added isodrän as a preventative measure - because if the sill becomes moist, the risk of problems is probably very high. And this is where many people wait until it becomes a problem, instead of preventing the problem. The latter ends up being much cheaper in the long run.
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Wondering what this has to do with embedded wooden studs in the concrete slab on ground? Assuming you are talking about wall elements like EW or Färila with concrete outside because you hardly have a wood wall against the ground? It is still a concrete slab on ground for the floor construction that TS was wondering about, right?
Construction veteran
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As it has been written. No organic material against the concrete. There are many other solutions. For example, cellplast, ventilated floors, floating, etc.
Maybe a construction drawing or sketch could show what you mean.mexitegel said:
Because I just get confused by your description.