Which mortar applies? (Images)

[HSV1]

Taken down the frames in the kitchen; and on some parts there is old plaster that I would like to apply to the remaining parts as well. What should I buy?

Follow-up question. This will then be painted, how does the plaster + suitable paint hold up as the only protection behind the sink? Under the plaster, there is brick.

Thanks!

/Olof

 

[HSV1]

Possibly someone who has a good idea on how to achieve a similar structure with some type of filler instead of mortar? Would gypsum plaster (spackel) be relevant?

 

[Helioz]

C-mortar 1mm which you apply with a steel float and then trowel is usually the simplest indoors. Then you paint with a high-gloss wall paint (acrylic or latex, for example) to achieve decent water protection.

The texture can only be achieved with plaster mortar as it is the grain size that controls it. Gypsum mortar and house fix are too fine-grained unfortunately. However, you can use them and then mix in sand or wood chips in the paint to mimic the plastered texture.

 

[HSV1]

Tested some c-bruk but I thought it adhered quite poorly. Forgot to mention that the wall and substrate have varying characteristics; so there's plaster, some bricks, some gips, and tile adhesive. Will have to try again.

Is it not possible to mix in some c-bruk or sand together with the gipsbruket? To get more structure?

 

[Helioz]

Tried some c-bruk but I thought it adhered quite poorly. Forgot to mention that the wall and the substrate have varying characteristics; so there is plaster, some brick, some gypsum, and tile adhesive. Will try again.

Isn't it possible to mix a little c-bruk or sand with the gypsum plaster? To create more texture?

Clean and pre-wet the wall before plastering so it should adhere to those substrates. I wouldn't mix anything into the gypsum plaster as it might affect how well it adheres, rather mix it into the paint.

 

[HSV1]

I couldn't help but mix in a little c-bruk in the plaster. 1 part water, 1 part plaster, 1 scant part c-bruk bonded nicely and the texture is towards what I'm looking for; surely it must be possible to continue with that?? Then just paint with a suitable color. Many mention silicate? But what I know about silicate is that it is meant to breathe out moisture; and not a direct protection against water.