Hello best Byggahus.se!

We are in the process of converting our garage into a guest cottage.
We have chiseled out and insulated the center of the slab but left a concrete edge around it.

The exterior walls are on cinder blocks.

Where the garage door used to be, our carpenter said we can lay cinder blocks in the same way and fill it with some type of mortar.

I wanted to ask you, is there any other better insulated way to build an exterior wall on an uninsulated concrete slab?

Thanks!!
 

Best answer

I don't quite understand - Do the exterior walls rest on lecablock?
Don't the other walls stand on the edge of the slab, or are the walls made of lecablock?
 
You are absolutely right, this was a bit confusing.

The smartest thing is to just place an outer wall directly on the concrete slab with foundation paper underneath.

I don't understand at all why our carpenter wanted to raise the outer wall with lecablock just because our garage is built that way.

The lecablock ends 10cm above the concrete slab, which makes it all a bit confusing.

Thanks for the answer!
 
Sounds like you're building an unnecessarily large thermal bridge, which your question was about. Otherwise, I was thinking that you can insulate externally at the bottom, foundation+leckablock, with foam plastic.
 
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