ᐅ Which type of smooth plaster is best for interior walls?

nordanney schrieb:

Now I have to replace the plaster on nearly 300 square meters (around 3,230 square feet) of floor area afterwards....

As long as the cement plaster had fully cured (dried), there is no problem at all. It only becomes an issue if the substrate – in this case the cement plaster – still had a residual moisture content above 3% before applying the gypsum plaster, which was not a good idea (the sulfates react).

Regards, Bauexperte

What is usually the case during the construction phase

Sebastian79 schrieb:
What is usually the case during the construction phase

Only with stubborn clients...

There are good reasons why recommendations to observe drying times exist.

Regards, Bauexperte

I agree with you—although very few builders actually do this. Unfortunately, for many homeowners, the word "wait" is often completely removed from their vocabulary, especially in the final stages.

Turnkey providers who advertise short construction times usually allow little to no real drying phases.

Sebastian79 schrieb:

I agree with you – but very few actually do. Unfortunately, for most clients the word "waiting" is usually removed from their vocabulary, especially in the final phase.

Of course, that doesn't change the fact that gypsum does not properly adhere to cement plaster once the substrate has fully set. If this critical fact is constantly ignored, gypsum – a well-established and reliable building material – gets an undeserved bad reputation. A prime example is gypsum board walls, which perform much better than their reputation suggests, especially when it comes to sound insulation – yet many clients keep repeating misinformation they find online.

Sebastian79 schrieb:

Turnkey builders, who advertise short construction times, often hardly allow any real drying phases.

Clients can ask questions, read, and educate themselves. It takes two to tango; it’s not always the fault of unscrupulous contractors. Furthermore, in this segment of the construction industry, the widespread use of chemicals is also common.

Best regards, Bauexperte

Gypsum has no place in construction – my opinion as a homeowner.

For most suppliers, of course, it is the ideal material because it is cheap and easy to work with...

I only know of chemicals as drying accelerators in screed – is there something similar for plaster? But is that really the ultimate solution? No idea, as a homeowner I would avoid it.

But it’s interesting how the homeowner is immediately referred to – otherwise dismissed as an unknowledgeable layperson, but then expected to deal with drying times? In the final phase? Most probably don’t... that’s why many go for turnkey construction, to avoid having to worry about these things... right?