Interior plaster and exterior plaster at the same time?

Currently building with Poroton and had a plasterer in the house the day before yesterday. He said that with Poroton it is best to apply interior and exterior plaster very soon, because if the house only has interior plaster and winters like that, it can be bad for the plaster, as it still absorbs a lot of moisture from the outside.

Originally, I had planned to do the interior plaster this year and the exterior plaster next year, in the sense of "so that everything can dry a bit more." On the other hand, his statement also makes sense to me, since the brick already absorbs water when it rains on the facade.

What are the experiences here? The plasterer would do the exterior plaster immediately after the interior plaster. There would be maybe a maximum of 7 days between. The plaster has to be done anyway... should I have it done at the same time, or rather wait some time until it all dries a bit?

The screed will probably come shortly after the interior plaster is done. So I will have the entire load of moisture in the house at once.

Regards!

Total nonsense what he’s saying there. You can also do the exterior plaster later. However, there is nothing against doing it at the same time, but keep in mind you need to be able to open windows for ventilation or set up many dryers.

For the screed definitely leave at least 4 weeks in between. Otherwise it will get way too damp inside the place!

Total nonsense what he is saying

On the weather site, I have often seen houses that have gotten damp inside. I wouldn't take the risk.

Ok, so then I can make fewer mistakes plastering than without plastering, provided of course, I then think of very good ventilation and try to delay the screed a bit further back.

The house can hardly dry out and thaw without exterior plaster. In this case, you should use construction dryers. Ventilating alone will not make you happy. It makes sense anyway, as otherwise you will have increased heating demand for many years until the house is dried out.

I have often seen houses on the weather site that have become damp inside. I wouldn't risk it.

That can't be. There are houses that stand for several years without external plaster, and they have no problems. Only slightly higher heating costs.