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A construction tip - plastering a wall made of cellular concrete blocks

I am looking for advice. I built a dividing wall in the apartment using concrete blocks. Then I tried to plaster it with the Atlas plaster mix 6-30 mm. Unfortunately, lacking the proper skills, it turned out uneven, I did not level it out and did not smooth it out. In order to lay another layer of plaster to even it out, there is not much space for thickness. It seems to me that I would have to sand down the unevenness and lay another layer, but with plaster that allows for a thickness of 2-3 mm. Adding another 6 mm may be too much :( Can you suggest something, advise? What kind of mortar do you recommend, with smaller grain size, that will allow me to level out this plaster and then apply a gypsum finish on it? Please have a kind approach to a beginner who is trying to do something on their own.
I am looking for advice. I built a dividing wall in the apartment using concrete blocks. Then I tried to plaster it with the Atlas plaster mix 6-30 mm. Unfortunately, lacking the proper skills, it turned out uneven, I did not level it out and did not smooth it out. In order to lay another layer of plaster to even it out, there is not much space for thickness. It seems to me that I would have to sand down the unevenness and lay another layer, but with plaster that allows for a thickness of 2-3 mm. Adding another 6 mm may be too much :( Can you suggest something, advise? What kind of mortar do you recommend, with smaller grain size, that will allow me to level out this plaster and then apply a gypsum finish on it? Please have a kind approach to a beginner who is trying to do something on their own.
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3 answers


Paweł Jarzyniak
If 2-3mm is enough to level out, cut the protruding grains + soil + 3 layers of putty. With these from the bag, you can often lay up to 5mm per layer. Applying something with aggregate, if you still want to put putty, makes absolutely no sense.
If 2-3mm is enough to level out, cut the protruding grains + soil + 3 layers of putty. With these from the bag, you can often lay up to 5mm per layer. Applying something with aggregate, if you still want to put putty, makes absolutely no sense.

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Witu
Important, my colleague, that there is a willingness to do things on your own. Ok. You described it a bit strangely. I understand that after priming the walls, you applied this material/plaster to the wall and it didn't come out evenly. In my opinion, it's described too imprecisely in the sense that nothing is checked visually or measured in construction. I would apply a straight edge and a corner and check for unevenness, wherever there are deviations of more than 2-3mm, it needs to be filled in or sanded down. After sanding and leveling, prime again and apply plaster. There are different types of gypsum plaster, so you can choose something for yourself. During renovation, I used GTA atlas plaster from a bucket - it applies very well.
Important, my colleague, that there is a willingness to do things on your own. Ok. You described it a bit strangely. I understand that after priming the walls, you applied this material/plaster to the wall and it didn't come out evenly. In my opinion, it's described too imprecisely in the sense that nothing is checked visually or measured in construction. I would apply a straight edge and a corner and check for unevenness, wherever there are deviations of more than 2-3mm, it needs to be filled in or sanded down. After sanding and leveling, prime again and apply plaster. There are different types of gypsum plaster, so you can choose something for yourself. During renovation, I used GTA atlas plaster from a bucket - it applies very well.

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OpenAI BOT
My first step is to smooth out the unevenness on the plaster that has already been applied to the concrete blocks. Then I recommend using a mortar with smaller grain size, which will allow you to level the plaster on the wall. You can try using gypsum mortar, which is easy to use and will allow you to achieve a more precise smoothing of the surface. Remember to read the manufacturer's instructions beforehand and follow them. Good luck!
My first step is to smooth out the unevenness on the plaster that has already been applied to the concrete blocks. Then I recommend using a mortar with smaller grain size, which will allow you to level the plaster on the wall. You can try using gypsum mortar, which is easy to use and will allow you to achieve a more precise smoothing of the surface. Remember to read the manufacturer's instructions beforehand and follow them. Good luck!

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