ᐅ Interior and Exterior Plastering (Aerated Concrete) – Important Considerations
Created on: 30 Mar 2011 16:47
M
Mahoon77
Hello!
I have many questions and hope to get expert answers.
For the house construction, I have decided to do the interior and exterior plastering myself.
My construction company planned to apply cement-based plaster in the bathroom and kitchen, and gypsum plaster in the other rooms.
I did some research online as a layperson and chose pure lime plaster. The shell will be made of aerated concrete (30cm (12 inches) thick), and according to the builder, no additional thermal insulation is necessary.
My cousin is a bricklayer (though he hasn’t worked in the trade for a while), and I want to plaster with him—he can do that. However, he prefers to use lime-cement plaster (interior plaster) and mix it himself. From what I’ve heard, most people recommend using ready-made lime mixtures because mixing your own can lead to many mistakes, and the sand must be of very good quality (washed, etc.).
Now, my questions about the interior plaster. It should be noted that I only want to paint the walls, no wallpapering anywhere, except for tiles in the bathroom, of course:
1. Lime-cement plaster or lime plaster (gypsum plaster is basically not an option for me, or is it?).
2. Pretreatment for the aerated concrete before plastering (wetting, anything else? Primer or something similar?).
3. Base coat plaster—one layer? How to finish/smooth it afterwards (lime smoothing plaster or something else? plaster/filler).
Exterior plaster:
4. What should be used as the base coat?
5. Pretreatment?
6. According to the building specifications: mineral scratch render, grain size 2mm (about 0.08 inches). What exactly do they mean by this type of plaster?
7. Base area, with cement mortar. I think that’s fine.
8. I have heard that today it is no problem to apply the finishing render (what exactly is it made of?) “immediately” after the base coat, without waiting for a year for the house to settle. The house will be built without a basement, if that matters.
Hmm? No more questions come to mind right now, but I’m sure I’ll have more later.
I’m looking forward to your answers and would like to say thank you in advance!
I have many questions and hope to get expert answers.
For the house construction, I have decided to do the interior and exterior plastering myself.
My construction company planned to apply cement-based plaster in the bathroom and kitchen, and gypsum plaster in the other rooms.
I did some research online as a layperson and chose pure lime plaster. The shell will be made of aerated concrete (30cm (12 inches) thick), and according to the builder, no additional thermal insulation is necessary.
My cousin is a bricklayer (though he hasn’t worked in the trade for a while), and I want to plaster with him—he can do that. However, he prefers to use lime-cement plaster (interior plaster) and mix it himself. From what I’ve heard, most people recommend using ready-made lime mixtures because mixing your own can lead to many mistakes, and the sand must be of very good quality (washed, etc.).
Now, my questions about the interior plaster. It should be noted that I only want to paint the walls, no wallpapering anywhere, except for tiles in the bathroom, of course:
1. Lime-cement plaster or lime plaster (gypsum plaster is basically not an option for me, or is it?).
2. Pretreatment for the aerated concrete before plastering (wetting, anything else? Primer or something similar?).
3. Base coat plaster—one layer? How to finish/smooth it afterwards (lime smoothing plaster or something else? plaster/filler).
Exterior plaster:
4. What should be used as the base coat?
5. Pretreatment?
6. According to the building specifications: mineral scratch render, grain size 2mm (about 0.08 inches). What exactly do they mean by this type of plaster?
7. Base area, with cement mortar. I think that’s fine.
8. I have heard that today it is no problem to apply the finishing render (what exactly is it made of?) “immediately” after the base coat, without waiting for a year for the house to settle. The house will be built without a basement, if that matters.
Hmm? No more questions come to mind right now, but I’m sure I’ll have more later.
I’m looking forward to your answers and would like to say thank you in advance!
M
Marvinius18 Sep 2022 23:57Adam2112 schrieb:
Bringing this topic back up. Any recommendations today? I would like to use lime cement on Ytong.
For gypsum, just wetting and priming is enough. Is there anything else to consider here?I tried plastering part of the basement exterior wall at the parking spot myself. This is not a job for amateurs, and since there are so many questions here, my advice would be: Hire a professional.Marvinius schrieb:
I tried plastering part of the basement exterior wall at the parking space myself. This is not a job for amateurs, and since there are so many questions here, my advice would be: Hire a professional.OK, how was your experience? Did you stop after trying?
M
Marvinius19 Sep 2022 13:53Adam2112 schrieb:
OK, how was your experience? Did you just try it once?In one area, I glued building panels and then applied plaster over them. That worked reasonably well. In the rest of the area, I can try again with the panels next year. But in a section that is very visible, I would not plaster myself.Similar topics