Choice of materials for basement wall.

[Corsair]

Tinkering in the basement and freshening up. I have several places where there were previously outlets and other things on the walls. What should I use to fix it up? Some form of mortar or plaster? Putty is probably not quite right as far as I understand!

 

[Mazen]

If the areas aren't large, you can buy husfix, works great..
https://www.bauhaus.se/casco-husfix...MI5oS68vf65QIVEeWaCh26cQpOEAQYASABEgLekvD_BwE

 

[-RB-]

Instead, buy a sack of plaster mix B or C. It costs about 50 kr for 20 kg instead of the house fix above which costs 189 kr for 2.5 kg.
Mix what you need.

 

[Corsair]

Instead, buy a bag of plaster B or C instead. It costs about 50 SEK for 20 kg instead of the house fix mentioned above, which costs 189 SEK for 2.5 kg.
Mix what you need.

What is the difference between B and C?

 

[leby]

B

What is the difference between B and C?

is a little harder, more cement in the mix. Maybe you should buy KC mortar instead of B or C

 

[-RB-]

B is a bit harder than C. (Contains more cement in relation to the amount of lime.)
If your house is old, it might even be a pure lime mortar which is very porous. But it doesn't seem like that in your picture, I think. Old lime mortar can be crumbled with fingers.

 

[Davion]

Borrowing the thread. What is best for filling in and replacing large, coarse segments of lättbetong?

 

[MathiasS]

It depends on how big the holes are.

 

[Huddingebo]

I have used C-bruk in my basement for the same thing. Works well and don't forget to pre-water and cover with plastic if you want it to adhere perfectly.

 

[Davion]

It depends on how big the holes are.

Big.

 

[MathiasS]

Ok, then most plaster mixtures are a bad idea. It works but you'll have to apply many layers.

I would mix coarse concrete and fill the holes with it, then plaster once the wall is restored.

 

[Huddingebo]

If there are larger holes in a brick wall, I would chip out and mortar in new stones.

 

[Davion]

Ok, then most plaster mortar is a bad idea. It works, but you'll have to apply many layers.

I would mix coarse concrete and fill the holes, then plaster when the wall is restored.

That's a thought I've had too, but I've heard that it's wrong to repair with hard material on soft material. True or false, good question.

 

[MathiasS]

Yeah, when you're polishing, that's probably true. But if you're fixing big holes, I'm not sure if it makes any difference...

 

[Davion]

Yes, when you're polishing that might be true. But if you're fixing large holes, I'm not sure if it makes any difference....

I'm definitely going for it. I think I'll go all out and use generous and sparingly water-mixed B, after I've primed.