What should I do with my sill? see pictures

[thomaslj]

Hello

Got the keys to our newly purchased 70s villa this week, and I eagerly started implementing our renovation plans. We knew the house had treated sills (something I promised myself I would never buy), but we liked the house so much we couldn't resist.

After demolishing an interior wall to open up the kitchen, we noticed that it was poured and anchored into a cast sill right in the slab. They had wrapped the sill in plastic and up on each side of the interior wall to protect the wood from moisture from the slab.

During demolition, the plastic obviously tore, and the sill (which I suspect is treated with cuprinol) is left exposed. The question now is what I should do next.

The idea was to fill the space with cell insulation and then lay flooring over it, but I get the feeling I'm creating a huge problem for the future.

Then I'm thinking about cutting off the sill, lifting it, and removing as much as possible, cleaning it, and then filling it with cell insulation. This would remove the entire piece that was under the interior wall. But if I do this, perhaps I'm leaving the remaining sill's end grain exposed to potential moisture intrusion?

What would you do? I'm not a trained structural engineer, so I'm more than open to suggestions and ideas from those of you who know about this

Pictures:
A picture of the entirety
A picture towards the house
A picture towards the facade

Facts foundation/slab
Ground
100mm gravel
100mm concrete
100mm cell insulation
50mm overcast

 

[Åsa Lund]

no forgotten trä in the concrete I say

 

[thomaslj]

Yes, there is quite a bit of bös in the gap that I need to pick away. However, I'm afraid that I can't get everything out unless I cut and remove the entire sill. Big reason why I want to remove it.

no leftover wood in the concrete I say

 

[thomaslj]

No suggestions?

It stated in the inspection report that the interior walls rested on untreated wood. Is this something that one can claim through a hidden defects insurance, do you think?

 

[Åsa Lund]

On the contrary, you might have been able to get something out of it. Pressure-treated wood is even worse in that location.

 

[thomaslj]

On the contrary, you might have gained something from it. Pressure-treated wood is even worse in that place.

Are you thinking about the outer sill? It was treated and I knew that. I was planning to replace it. But the question is whether it's worth replacing it if the entire concrete slab is filled with treated wood.