ᐅ Substrate Preparation for New Construction for (Machine-) Applied Plaster
Created on: 20 Apr 2021 11:47
D
dpauso7766
Hello everyone,
Here is my situation: my house construction is currently in its final phase. It is a solid building (masonry, concrete, and aerated concrete/Porotherm walls) and all surfaces will be finished with a Q2-level skim coat. I want to paint some walls with textured roller paint.
Now I am wondering how to prepare the substrate before applying the textured roller paint.
Company B was used by the painter at my sister’s house, and the result looks great—so they are my favorite. However, I am not fully convinced by their explanation and am uncertain if the burn-in protection is really required. Can you help me here?
Best regards from the Rhineland
Here is my situation: my house construction is currently in its final phase. It is a solid building (masonry, concrete, and aerated concrete/Porotherm walls) and all surfaces will be finished with a Q2-level skim coat. I want to paint some walls with textured roller paint.
Now I am wondering how to prepare the substrate before applying the textured roller paint.
- Company A (from the hardware store) recommends simply applying a sealing primer with a roller and then applying the textured roller paint. This makes sense and seems fine overall, though opinions on this approach vary.
- Company B (from the Alpine foothills) recommends using a bonding and deep primer before the textured roller paint. However, this company also says that for aerated concrete/Porotherm, a burn-in protection is necessary. This would be a significant additional step for me, and I am unsure if it is really needed on a wall that has already been skimmed to Q2 level.
Company B was used by the painter at my sister’s house, and the result looks great—so they are my favorite. However, I am not fully convinced by their explanation and am uncertain if the burn-in protection is really required. Can you help me here?
Best regards from the Rhineland
D
dpauso776620 Apr 2021 20:15nordanney schrieb:
It is also simply rolled on. A bit more demanding than just rolling paint.Okay, now I have read it correctly.. What kind of substrate did you have, and how did you prepare it?dpauso7766 schrieb:
What type of substrate did you have and how did you treat it?Old gypsum plaster: no treatment (there was wallpaper on it) Old cement plaster: no treatment
New drywall: primer
Noticed difference: none with any of the methods
The gray photo shows cement plaster, the white one unfinished gypsum plaster.
A
Aloha_Lars21 Apr 2021 08:42dpauso7766 schrieb:
Also with Ytong/aerated concrete as well?
I was just told to use everything from the same manufacturer because the products are then coordinated with each other. But for me, the question remains regarding the fire resistance layer. Yes, I also have Ytong. The fire resistance layer has to go directly on the Ytong (since otherwise it would absorb the water from the render), then the render, and for that I chose the mentioned combination (primer + textured finish).
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