Plastered walls or aerated concrete? What plugs + screws

[BirgitS]

Perfect, time to study up now! All the walls had the same plastered surface when I tore down the wallpaper, so it's probably the same throughout the entire place, tough! Need to search for blocks now when I want to hang something 😅

Do you know when the house was built?
During some periods, brick was used for most things, but during other periods, it was basically only used for load-bearing walls, with cheaper materials in other walls. In the 1920s, there were many plastered plank walls. Especially in the 1940s, bizarre products appeared because of the war.

 

[tuffebulle]

Do you know when the house was built?
During some periods they used brick for almost everything, but at other times, it was mainly used for load-bearing walls and cheaper materials for other walls, and during the 1920s there were a lot of plastered plank walls. Especially during the 1940s, there were many strange products because of the war.

1944 as far as I can see!

 

[jonaserik]

After a test to gouge the wall a bit (it will be wallpapered anyway) I see that it's plastered brick, what are your experiences regarding this?

Have a nice evening!

It's about finding a stone to attach to and not ending up in the joint, because then all the fastenings done are in vain.

 

[tuffebulle]

You'll need to find a stone to attach and not end up in the joint, because then it's game over for all the fastenings that have been made.

Tough! But that's how it is! Are there any tips & tricks for locating the stones more easily, or is it just randomly taking a train until you strike gold? 🙏

 

[BirgitS]

1944 as far as I can see!

Then there may very well be different materials hidden behind the plaster.

 

[jonaserik]

Yes, it's hard to find a stone in parts of the middle as it should be. If you look your way, there's a bit of "hejsan" on horizontal masonry, and that's how they did it before, troweling on mortar and placing a stone. Today, in masonry, the stones are quite precisely leveled and the joints are essentially uniform throughout the wall. So if you end up in a joint, you'll have to dig out a bit and fill all the way to the bottom with mass. To make a long writing from me about fixing in a "skitvägg"/joint, you can read a bit here, but don't forget to take the spray bottle and wet the hole before pressing in mass, this is so the joint compound doesn't dry directly against the material in the hole, it doesn't matter if it gets a bit wet, it dries quickly.

https://www.byggahus.se/forum/threads/hyllor-pa-extremt-poroes-vaegg.267235/

 

[sinuslinus]

The outer walls can be plaster with an air gap against the framework. Avoid them. 🫣😉

 

[tuffebulle]

Yep, it is difficult to find a stone in parts of the middle where it should be. If you look in your direction, there's a bit of unevenness in horizontal masonry, as it was done in the past: slapping on mortar and placing a stone. Today, in masonry, the stones are quite precisely level, and the joints are generally consistent throughout the wall. So if you end up in a joint, you'll need to dig out a section a bit and fill it all the way to the bottom with material. To make a long explanation from me about fastening in a dodgy wall/joint, you can read a bit here, but don't forget to take the spray bottle and moisten the hole before pressing in material, so the joint compound doesn't dry directly against the material in the hole. It doesn't hurt if it gets a little wet; it dries quickly.

[link]

Nice! Thank you very much! Appreciated!

 

[tuffebulle]

The outer walls can be plaster with an air gap against the frame. Avoid them. 🫣😉

i.e., no bricks or what do you mean? 😬