ᐅ Applying joint compound to basement concrete walls

Created on: 8 Nov 2021 15:51
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exto1791
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exto1791
8 Nov 2021 15:51
Hello everyone,

We have a waterproof concrete basement that we are painting ourselves. The basement concrete walls are untreated and will not be skim-coated.

Accordingly, the joints at the basement ceiling are also not skim-coated. The concrete naturally has many small air bubbles, which raises the question for me:

Do I need to fully skim-coat the concrete walls throughout the entire basement before painting, or can I possibly paint directly onto the surface with the right paint without significantly affecting the appearance?

I was thinking of only skim-coating the joints and corners, as the appearance would likely suffer noticeably if I didn’t do this.

Skim-coating four rooms entirely... I would like to avoid that effort if possible.

Does anyone have experience with this? Has anyone been in a similar situation and chosen one option or the other and can share the results?
Tolentino8 Nov 2021 15:57
Ahem, I wouldn’t paint the basement ceiling at all...
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exto1791
8 Nov 2021 16:00
Tolentino schrieb:

Ahem, I wouldn’t paint the basement ceiling at all...

I’m referring to both the walls and the ceiling.

Right now, I’m unsure how the result would look using just textured paint like quartz paint or similar, without applying filler beforehand.

Of course, it’s the basement, and usually you only do this once. The question is simply how much the results would differ, and whether I actually care about the difference.

That’s why it would be great if there are people here who faced the same decision, possibly without doing the work themselves but by hiring a general contractor.

The thing is: the interior walls are masonry and will be plastered... only the concrete walls, meaning the exterior walls, will remain completely unfinished.

I have no idea how that would look if I leave the concrete walls untreated and just paint over them.
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Benutzer200
8 Nov 2021 16:10
exto1791 schrieb:

Of course... It’s the basement, after all, you usually only do this once. The question is really how much the final result will differ and how much that difference actually matters to me.
Utility basement? Then just paint over it and that’s it. Otherwise, fully smooth with filler and sand it. Just doing “a little filling” is okay, but “okay” is the little sister of awful...
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exto1791
8 Nov 2021 16:12
Benutzer200 schrieb:

Utility basement? Just paint over it and that’s it. Otherwise, fully smooth it with filler and sand it. Just “a little filler” is nice. And nice is the little sister of crap...

Utility basement... Yes!

I would also prefer to just paint the mechanical room and laundry room, as the effort to fill and smooth would be too much for me.

In the storage room, I’m considering applying filler. In the future, it could be subdivided with drywall and turned into a hobby room...

I think I will paint the mechanical room first and see how it turns out – then I can still decide whether it’s worth the effort to fill the other room.
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Ysop***
8 Nov 2021 17:48
We started our renovation in the basement. There were drywall panels in front of the concrete in some areas, and in some places the ceilings were dropped. We have now plastered and installed new flooring. I think the difference is very clear. Beforehand, I would have said we should skip the effort. But I really like the new, nice basement 🙂