What is this material?

[Smackbonk]

Hello!

I will eventually start renovating our outbuilding. Half of the building is concrete and half is wood. The old part (which is probably quite old) is covered on the inside with this material. The surface is very rough. I was thinking of tearing it down, but I want to know what it is and if it could be dangerous to demolish.

Best regards,

Peter

 

[Stefan N]

Looks like cement-bound reed. Nothing dangerous in that case.

 

[Smackbonk]

Thanks! I'll start tearing it down and we'll see...

Best regards

Peter

 

[snuttjulle]

träulit might be it too. Cement-bonded wood chips.