ᐅ Leave precast concrete ceiling panels in the basement unfinished?

Created on: 4 May 2022 14:40
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clausen77
Hi,

for our project, interior work is just starting, and we were considering leaving the precast concrete ceilings in the basement (which consists of two large living rooms, one guest room, one fitness room, as well as a wine cellar, hallway, and utility room) exposed as delivered, only filling the joints between the individual elements.

We expect this to give the basement a certain loft-style look (we had already planned black track lighting systems with black spotlights, as well as black switches and sockets for the basement).

On the downside, the ceiling height in the basement is the lowest (275 cm (108 inches) minus 20 cm (8 inches) for the floor build-up, so 255 cm (100 inches) room height), and it is said that white ceilings provide the greatest sense of space. According to the construction manager, the joints would still be visible but not as noticeable as they are now (they would be filled flush with the ceiling in a similar color tone).

We would definitely plaster and paint the walls (in white or possibly also in color).

Question to the group: Should we go ahead or not? Will we achieve the desired loft effect this way, or would it look rather awkward combined with smooth walls? And is a room height of 255 cm (100 inches) still suitable for this, or is it already too low?

Thank you very much for your opinions / feedback / ideas.
11ant4 May 2022 15:23
clausen77 schrieb:

and only the joints between the individual components

Where do you see visible joints there?
Benutzer200 schrieb:

Honestly, you won’t achieve even a hint of the loft look with either painted/spackled ceilings or completely untreated ones,

I think the "loft look" isn’t really more authentic than the "concrete look" (which, in trendy furniture, is usually just a symbolic label anyway).
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clausen77
4 May 2022 15:42
11ant schrieb:

Where exactly do you see visible joints there?

The precast concrete slab consists of several prefabricated parts that are simply “laid” on the walls. After that, the concrete topping was poured on top.

The joints I referred to are between the individual elements (there aren’t many, maybe 2 to 3 per room).

Next time I’m at the construction site, I’ll take a photo and upload it for illustration.
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guckuck2
4 May 2022 15:52
11ant schrieb:

Where do you see visible joints here?

Seriously? Have you ever been inside a shell of a building?

The "rustic" charm of the loft also comes with the fact that the ceiling is further away from the viewer. A delicate ceiling viewed from a distance of one meter (3 feet) simply looks really unattractive.
At least, I would fill the joints with concrete filler. You don’t necessarily have to sand it after the first application; it can already look good that way. You can always apply more filler, sand, or even paint later if needed.
11ant4 May 2022 16:13
clausen77 schrieb:

The joints I was referring to are between the individual parts (there aren’t that many, maybe 2 to 3 per room).
guckuck2 schrieb:

Really? Have you ever entered a shell construction?

Seriously, did you just ask me that?
“Filigree slabs” (R) don’t have fundamentally different sizes compared to slabs cast entirely on site, and most of the slab panel joints are hidden from below, basically covered by the walls. Only in very large rooms (like a combined living, dining, and kitchen area) — and therefore in a hardly relevant number overall — would I expect joints running within a room; that’s why I asked.
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guckuck2
4 May 2022 16:25
11ant schrieb:

Seriously, did you just ask me that?

Yes. After your post #10, I could ask that again.
It can only be satire.

Of course, precast waffle slabs are limited in width, at least for transportation reasons, and therefore “usually” cannot cover a room as a single piece. This is a significant difference compared to cast-in-place concrete slabs.
Tolentino4 May 2022 16:45
This room is about 2.75 meters (9 feet) wide...
@te We will leave it as is, it’s the utility room.

Exposed metal pipes and ventilation duct run across a raw concrete ceiling; a loose light bulb hangs.