Drying time for plaster before tiling

[ensamresande]

I will soon be demolishing my kitchen that sits on a plastered lightweight concrete wall, and I'm quite convinced that much of the plaster is poorly attached and will come off when I remove the old tiles. Furthermore, the wall is quite uneven, so it will probably require up to 20 mm of plaster in some areas.

So the question now is; which plaster should I use to repair this?

Gypsum plaster is nice and all, but is it possible to apply primer/tile after just 1-2 days? Or do you have to wait for the entire drying time indicated? 1 mm/day for Rotband or 2 mm/day for Gypsum means I would need to go 10-20 days without a functioning kitchen while it dries.

 

[myrstack]

Fill in the worst with gypsum plaster and then apply gypsum with, for example, lip flexicol and tile the next day.

 

[ensamresande]

Thanks for the suggestion, but drywall feels like a necessary evil in this case and I would prefer to plaster everything evenly.

However, my search has led me to Finja Laga Vägg which seems to do what I'm looking for. According to Finja, you can apply a moisture barrier after 1-3 hours (not needed here though) and then tile after 1 day. It seems to cost about 120 SEK for 15 kg (which gives 12 liters) which is probably considered reasonable for a specialty product.

 

[AXS]

I also recommend drywall. I was working with plaster/filler etc. on a wall myself. It didn't turn out quite right and took time. For the other wall, I knocked down all the plaster and glued on a drywall sheet, it was great.

 

[hempularen]

I helped my son with a kitchen remodel last spring. Most of the plaster came off, except where a previous owner had used gypsum plaster. I plastered over the surface with gypsum plaster. There were probably some holes I should have filled in again, but it doesn't need to be very even if you're going to tile, the most important thing is that nothing sticks out.

Gypsum plaster cures quite quickly. Usually, you do the plaster repair before the cabinets are installed, and the tiling afterward, so there will be a few days of drying time in any case.