The outer wall is built of 8 cm (or 10 cm, I don't quite remember) cinder blocks which are plastered. There are some cracks in the wall that vary in size depending on the weather. I think it's the wooden frame that's moving. How can you fix it so that it lasts? I assume the crack goes all the way through, so I want to go in-depth with the fix so the wall becomes whole, not just make the surface look nice.
I've read about some adhesives like ex pl400, can that be used to glue the wall together? Would that cause a new crack elsewhere? The wall in question is 12 meters long.
Is an alternative to create an elastic joint in the middle of the wall? I'm pretty much at a loss right now and don’t know what to do.
Could there be any professionals on BH who would like to advise?
Hmm, no one knows?
Well, maybe I figured it out myself now. Water glass should be able to be sprayed into the cracks, https://www.bauhaus.se/flamskyddsmedel-nitor-vattenglas-natron, and glue deep down.
Attach a capillary tube to a cork, drill a small hole 70mm in at the top, then just fill it up.
Am I too optimistic?
Maybe, but it's worth a try, right?
Sounds like a strange construction with such a thin lecavägg? I don't believe in gluing at all, unfortunately.
Do you have any mesh in the plaster today?
Sounds like a strange construction with such a thin lecavägg? Unfortunately, I don't believe in gluing at all.
Do you have any mesh in the plaster today?
Well, strange, maybe, they're 9 cm, supposed to be the same as a brick, approximately. The house was meant for brick, but the contractor who got the job altered the contract, so I got the cladding as an option. Being a novice and poor, we had to choose the cheapest option, but it holds, has since 1983, painted 3 times.
I have cleaned and it turned out that the plaster holds, but the outer layer has turned to sand, which caused the paint layer to peel off. But this has only happened where there is a crack, possibly moisture has seeped in and caused this.
I just went and bought water glass and a lecablock, so I will test the thesis.
Of course, I will report the results, I can't be the only one with the mentioned problem.
No mesh.
We'll see if I can take a picture then, but there's not much to see, the paint has come off because the outer layer of the plaster has lost binder at defects. That's how I see it. The south side is now ready for painting after rebuilding the structure, found detachment on the north side too, horizontal and inexplicable, possibly snow lay against the wall many years ago. Regarding my experiment, it is ongoing, noting that it adheres but also takes forever and as the sodium silicate seeps through, I have to apply many times with long intervals in between and it uses a lot of vg so I'm putting that project on hold for now. The paint I'm using was originally Snowcem and now Cempexo since they stopped selling Snowcem in Sweden and I was recommended Cempexo as a replacement, but I don't think it's about the paint.
One can clearly see a "ås", warm, dry weather has caused the wall to shrink, this towards the south and west. If I repair it now, the crack will likely return when the wooden frame becomes more humid.
Also, a picture of the ongoing experiment.
Evidently, water glass glues the lecablock together. How strong it is, I don't know, but I assume that patience matters. Consider the experiment concluded.
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Stefan N said:
