Is the masonry too damp for interior plaster?

Hello everyone

first of all, a happy new year to all!

We are building with a construction company that is taking over some trades for us. These include, among others, shell construction, water, heating, interior plaster, and exterior plaster.

It is currently in full swing and so far everything has been to our complete satisfaction.

However, the interior plaster is planned for 15.01.2014 and the walls are unfortunately still very damp. I have concerns whether everything is alright and am somewhat afraid of getting mold problems later.

The measuring device beeps with every measurement, is this normal for a new building? Or should I better organize a construction dryer at short notice?

Upstairs it looks better, values of 13%-23%. The concrete ceiling was measured at about 23%.

The roof beams as well as the Pavatex boards laid on top are measured at about 17% moisture. The cavity insulation (will be cellulose) has not yet been installed. The vapor barrier (Intello Plus) I will install before the interior plaster, but the insulation is only supposed to be blown in after the screed is dry when most of the water is out.

For the interior plaster, a lime-cement plaster was planned.

What do you think of these values? After a lot of research here in the forum or on Google, I am not really any wiser.

Many greetings from the Odenwald

Dominik

Here is the picture showing the values. Unfortunately, it is not drying either in the current weather conditions.

What do you think about it?

An expert once told me that if houses are built during the cold season, problems can arise afterwards because they do not dry properly.

Are the windows not installed yet?

If the windows are installed, a construction dryer would indeed make sense.

The windows are already in. I know it needs to dry properly, but the question is whether it also has to be dry before the interior plastering. After all, a lot of water also comes into the house then.

So I haven't found anything about it in my technical data sheets, but it's not really my area. However, when we plastered a wall, it was also wetted so that the plaster adheres better. As you already mentioned, the plaster is also very moist and due to the layer thickness there is a lot in it. Lime-cement plaster has a certain alkalinity, the alkalinity prevents mold formation. One thing I can tell you for sure is that they have to be dry before painting.

Oh, and regarding the wood, a moisture content of up to 18% is acceptable. Afterwards, the value indoors should be between 10-12%.