How do I repair the cracks in the aerated concrete wall so they last?!

[neo11]

The net suggested above is probably a net for thin plaster (EF mortar).
https://www.se.weber/fasad-puts-och-murbruk/armering/webertherm-397-ef-nat
Might be good in your case, such a net and ef mortar.
You smooth the mortar, then smooth in the net.
The next day, you smooth over it thinly again and then finish with a felt trowel.
A bit hard to assess without pictures.

 

[Bennca]

The net suggested above is likely a net for thin plaster (EF bruk)
[link]
Might be good in your case, such a net and EF bruk.
One trowels the bruk, then trowels in the net.
The next day you trowel a thin layer over again and then float with a float board.
A bit hard to assess without pictures.

Thanks for the answer! Is it possible to apply EF-bruk on gypsum plaster? The walls were plastered with this a long time ago. And painted. The paint probably needs to be removed first I suppose. Sounds like it's going to be a dusty job.

 

[neo11]

No, EF bruk sticks to everything, as it is some type of plastic bruk. But very good.

 

[Bennca]

No, EF mortar adheres to everything, as it is some form of plastic mortar. But it's great.

Perfect! Thanks for the tip!

 

[ThiasGbg]

Perfect! Thanks for the tip!

doesn't look as dense as the one I linked from amazon. so it should be weaker... the 6mmx6mm

 

[neo11]

doesn't look as dense as the one I linked from amazon. so it should be weaker... the 6mmx6mm

I don't think it makes much difference whether it's 4 mm or 6 mm.
And personally, I rely more on products sold by Swedish department stores.
Especially Beijer, which has some knowledge of plaster, and should know a bit about what they are purchasing.
However, the roll from Amazon is much cheaper, I believe such a roll at Beijer costs at least 1500 kr.

 

[ThiasGbg]

I don't think it matters much if it's 4 mm or 6 mm. And personally, I trust products sold by Swedish department stores better. Especially Beijer, which has some knowledge of plaster, and should know a bit about what they purchase. However, the roll from Amazon is much cheaper, I think a roll like that at Beijer costs at least 1500 SEK.

I think it sounds unnecessary, he's just going to repair, not build an ISO house. His house will not be approved for it. Just a waste of money.