Hello, when I am tearing down our basement, I find the material below in certain places. It was probably used to attach the plaster. However, it's only used in certain places, while in others it's thin aerated concrete slabs. It's only used on the lower part of the walls, about 50 cm up from the floor. Our house is made of aerated concrete and from the 50s.

It looks like green tagliatelle!?

I'm curious about the material.
What is it called?
Is it a natural material, like seagrass?
What was it used for?
Properties, positive / negative?

/Andreas
 
  • Natural fibrous material resembling green tagliatelle, used in the 1950s house renovation, possibly for plaster anchoring in a basement wall.
Wood wool. Still exists, but it's not used as insulation in basements anymore.

www.traullit.se
 
Cement-bonded wood chip!

Used a lot as insulation, often cast on one side.
 
Thank you.
That sounds like a good material for a basement wall. From the website;

"The wood wool boards have the ability to absorb and release moisture without damaging the product. You can actually also benefit from moisture absorption and release as a regulation of relative humidity to achieve a consistent humidity level in the space."
 
As long as the drainage is reasonable and you don't have water coming from the inside, it works well. Personally, I removed this when I renovated my bathroom to ensure there wouldn't be any problems in the future. After all, the material is wood chips. But in the rest of the basement, it'll probably remain if I don't see any issues.
 
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