How to plaster a brick fireplace?

[a12345]

We have a fireplace, see image below, that we want to smooth out.


The difference between the highest and lowest points on it is about 3 cm.


How do we do this in the best way? What type of plaster should be used? Is reinforcement mesh necessary?

We will not be using it for a fire at all if that affects which type of plaster is best to use.

 

[Stefan N]

Render C 3mm, fill everything first so it becomes fairly filled then another round.

 

[a12345]

Rendering mortar C 3mm, fill everything first so it's reasonably filled, then another round.

Okay, thanks! So no need for a reinforcement mesh or anything like that? It's enough to just apply the render in rounds?

 

[a12345]

Render mix C 3mm, fill in everything first so it's reasonably filled, then another layer.

Like this one, for example? https://www.bauhaus.se/putsbruk-c-20kg#go-to-description