ᐅ Questions/Painting Work in New Construction (Prefabricated Concrete Ceiling, Drywall, Gypsum Plaster)

Created on: 14 Sep 2014 08:46
L
Lacos
L
Lacos
14 Sep 2014 08:46
Hello everyone,

Our new build is now approaching the painting phase. I wanted to ask you experts how to best approach this. We are constructing a single-family house with a traditional pitched roof. On the ground floor, there is gypsum plaster and a concrete ceiling; on the ground floor / stairwell, there is gypsum plaster and gypsum drywall. We want to paint all rooms white.

I have a few questions regarding this:

1) Is it absolutely necessary to apply a painter’s fleece to the precast concrete ceiling? The joints will of course be filled by the general contractor, but we are not sure if this is sufficient.
2) Gypsum plaster: What kind of paint would you recommend or should be used here? How should the gypsum plaster be prepared beforehand?
3) Gypsum drywall: Same question as point 2 – how can we avoid visible color differences at the transition between plaster and gypsum drywall?

I would be very grateful for any tips or advice.

Lacos
One0014 Sep 2014 10:26
Regarding point 1)
No, the acoustics should be somewhat improved (softer) with fleece or wallpaper, as the sound will not reflect as harshly as it does on concrete. We are only painting our concrete ceiling.
Depending on the agreed quality level of the filler work, you might still see edges and marks after painting without additional sanding.
It’s best to buy a long-reach sander (a decent used one) and touch up if needed. That’s how I do it.

Regarding point 2)
It’s best to ask where you buy your painting supplies. We also have gypsum plaster, drywall (GKB), and concrete and use interior silicate paint. We haven’t painted concrete with it yet. One coat is enough on plaster, but on drywall, we need two. Of course, priming is important!
We used a special silicate-based primer (for the paint).

Regarding point 3)
Buy good quality paint, apply it evenly with a brush or roller, and possibly do a second coat. And of course, always prime and prepare well beforehand (filling, sanding).

For the wall joints, you need good paintable acrylic sealant that cures quickly and a steady hand.

By the way, it looks great for us so far! I’m glad we didn’t use wallpaper.

You can’t completely avoid hairline cracks without fleece, of course. But for us, it’s worth it (saved a lot of work).
V
Vuffiraa
19 Sep 2014 15:22
We followed a similar approach to what One00 described.

For the walls that were going to be painted in color, we first applied a white primer coat. You need to allow enough time for this process (priming, white coat, colored coat, and another colored coat), but the result is impressive.
I
Icemann
19 Sep 2014 16:14
Hi
We had a fleece applied over it, and it looks fantastic—completely smooth, pure white.
I would definitely do it the same way again.
Regards
One0020 Sep 2014 23:29
I would have had it professionally installed as well; a simple fleece looks great and settlement cracks are easily concealed behind it.
However, I wanted to save the cost of hiring someone and the time it would take to do it myself, and it looks really good. The roller leaves a very fine, subtle texture.
By the way, it worked quite well on concrete; two coats of good-quality paint were enough. I didn’t expect that.

If you notice any flaws while painting, they can be easily filled, sanded, primed, and repainted after the paint dries—you won’t see any traces.