Lime mortar system on extension (timber frame with exterior gypsum)

[plan-g]

We are making an extension on an old plastered house.

The carpenters have built a modern insulated wooden stud frame and now put up exterior gypsum board.

We want to plaster with a traditional lime mortar. Thick plaster with a roughcast appearance.

How do you build it up?

Diagonal battens and galvanized mesh as a plaster carrier?
Reed mat directly on the exterior gypsum?
Plaster board/insulation as a plaster carrier?

Suitable mortars? Weber 142 / 148?
Grateful for any advice.

 

[plan-g]

We are doing an extension on an old stuccoed house.

The carpenters have built a modern insulated wood frame and now put exterior gypsum.

We want to plaster with a traditional lime mortar. Thick plaster with a roughcast appearance.

How do you build it up?

Diagonal battens and galvanized mesh as a plaster carrier?
Reed mat directly on the exterior gypsum?
Plasterboard/insulation as a plaster carrier?

Suitable mortars? Weber 142 / 148?
Grateful for all advice.

@neo11 Hope for a post from you!

 

[neo11]

I would guess that Rejäl has better knowledge about the wall behind the plaster.
Reed mat is basically no longer used, and does not fit here.
Plasterboard is used if you are going to insulate, but it seems like you insulated from the inside.
And regardless, you cannot use lime mortar on plasterboard.
Plaster with weber 142.
Which type of stucco is intended? white or colored?
And what mm on the stucco, preferably pictures.