What material is this? Basement wall 50s

[onatakosha]

What could this material be and what should I do with it? Is it an okay material, can it transport moisture, etc.? Appears to be against exterior walls, masonry behind. Sounds hollow when you knock on it. Basement from the 1950s.

 

[Argastesnickaren]

Wood wool board.

Wood wool board is a material completely free from toxic substances.
It is thermally stable, moisture-regulating, sound-absorbing, fire-protective, and resistant to mold and rot. A durable and renewable material — and always modern.

Wood wool, water, and cement. Since 1946.

 

[cpalm]

Looks to be in good condition too, so if you're not planning to do anything special, I'd just patch up where the plaster has fallen off.

The negative traits are that you can't attach anything to it, the plaster tends to crack at the panel joints, and it's not 100% moisture-resistant as it turns to scrapes with continuous moisture exposure over the years.

Plus, the panels have changed thickness over the years, so there are no replacement panels that fit if you need to replace individual panels.

 

[onatakosha]

Looks to be in good condition too, so if you're not planning to do anything special, I would just touch up a bit where the plaster has fallen off.

The negative properties are that you can't attach anything to it, the plaster tends to crack at the panel joints, and it's not 100% moisture-resistant, gradually turning to scrap over the years with continuous moisture exposure.

Plus, the panels have changed thickness over the years, so there are no replacement panels that fit if you need to replace individual panels.

Thanks for the response. There are some loose spots and visible joints. I think moisture is okay except in one corner, where the downspout goes down so it's probably blocked there. I'll lead it out onto the lawn instead. In that case, I'll keep the panels and touch up a bit where it's missing.