What to replace clay plaster with?

[Bosda]

I am rebuilding a kitchen in a house that is about 100 years old, used as a vacation home.

When I removed the old kitchen, there is about 30 mm clay plaster directly against the 150x150 mm timber wall. As a base for the kitchen, shelves, and beadboard, I plan to install 15 mm plywood on top of the plaster, which I will attach to the timber wall.

The problem is that if I add 15 mm plywood on top of the existing plaster, I end up outside the door and window frames, which are of an old antique model. Since I see it as a rather big challenge to rebuild that, I considered removing the plaster (which is partially quite damaged after the kitchen demolition) and replacing it with some form of board (about 15 mm) that, together with the 15 mm plywood, will be about 30 mm. This way, I can avoid rebuilding both the frames and reveals in windows and doors. Asfaboard would be good, but I've heard it's not ideal for indoor use.

Can I proceed as described above, and if so, what type of board or other sheet material should I use behind the plywood?

 

[fribygg]

I think the best, cheapest, most stylish, and simplest solution is to retain the plaster/clay plaster, repairing what is damaged.

If you, for example, choose an IKEA kitchen, they are mounted on rails which can be perfectly screwed into the underlying timber in your case.

 

[Bosda]

I think the best, cheapest, nicest, and simplest solution is to keep the plaster/clay rendering, repairing what's damaged.

If you choose, for example, an IKEA kitchen, these are mounted on rails which can be easily screwed into the underlying timber in your case.

Thanks for the response.
I agree with you, but I need to have a firmer material outside the existing plaster, for example, to nail beadboard. It doesn't look very nice to fasten it with 4-inch nails 😉 and then I want to avoid remodeling casings/reveals in windows and doors but still maintain something that matches the plaster's 30 mm thickness. I'm thinking 15 mm plywood and "something" at 15 mm between the timber and plywood. The question is just what?

 

[fribygg]

Then embed a batten in the clay plaster where you will attach the beadboard.

If you still put panels on the walls, you must expect to redo the moldings and trims, and you'd want to avoid that, wouldn't you?

 

[Bosda]

Then recess a batten in the clay plaster where you want to attach the beadboard.

If you still put boards on the walls, you must expect to redo the moldings and trim, which you probably wanted to avoid?

Thanks for the response.

With today's clay plaster at 30 mm, I have a margin for molding/reveal when I install beadboard.
If I replace the 30 mm clay plaster with 15 mm board and 15 mm plywood, it still remains 30 mm as I have today. Then I have space for beadboard without extending beyond the molding.

I have turned the question over 100 times in my head, and I am leaning towards some form of board and plywood. My question right now is what type of board should I use?

 

[Mazen]

You can install the Pärlspont with panel clips and longer screws (If you want to keep the lerklining and avoid using boards, that is)

https://shop.byggahus.se/products/p...Dz5BSDb_LUZmneno_zYujAaBzwP7MA7xoClJ8QAvD_BwE

If I were to tear down and replace the lerklining, I would choose plywood + plasterboard.

 

[Bosda]

You can mount the pärlspont with panel clips and longer screws (If you want to keep the lerkliningen and avoid setting boards, that is)

[link]

If I were to tear down and replace the lerkliningen, I would choose plyfa + gypsum..

👍