Render 0-3mm too coarse?

[ravve007]

Hello,

I'm in the process of selecting materials for plastering the inside of the basement walls and would prefer to avoid unnecessary steps. Therefore, I'm wondering if anyone has a picture or can tell whether 0-3mm is too coarse (aesthetically)? We want it as smooth as possible but, as mentioned, would prefer to avoid doing an extra round with the fine variant that is 0-1mm.

Thank you

 

[cpalm]

The coarser the grain, the thicker the application you can make. Therefore, the finest-grained mortars are used for a final thin surface finish. Whether 0-3 mm provides a sufficiently smooth surface is up to you to decide, but it does not give a surface that is "as smooth as possible."

 

[Byggmarodören]

I would say it is not smooth at all.
We have a lot of 0-1.5 and I wouldn't call it directly smooth. In half-light you can clearly see the structure of it.
A couple of walls in the technical room only have base plaster 0-3 and there is nothing wrong with them, but they definitely give more of a natural stone feel than a smooth wall (even from a few meters away, the walls do not look smooth).

 

[useless]

How smooth the surface becomes depends largely on how it is processed. By smoothing with a steel trowel, almost any mortar can be made smooth.

 

[ravve007]

Thanks! Smoothing with a steel trowel, what does it actually mean? Perhaps a descriptive link, I can't find much on Google My guess is that you simply go over the plaster with a steel trowel, after about 2 hours when it has hardened a bit. Right? What does the steel trowel look like?

I read something about floating with a fine foam-like thing.

Smooth or float? Where can I read more about this, it's a jungle for me

 

[guggen]

0-1 gives a fairly smooth surface, but there are also, for example, 0-0.3 and similar