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The screed was made two weeks ago, with the cold it is currently there is moisture rising windows whose wet and water runs on the placo, what should I do? is it very bad for the placo?

There is, in my opinion, no direct relationship between the pouring of the screed and the rising damp. After 2 weeks, the mortar of the screed must have taken, unless the room temperature is below 0° C (it should have used in this case a setting accelerator). To eliminate any traces of moisture it should be enough to ventilate (do not hesitate to open the windows when it does not freeze) or / and heat. I am afraid, on the other hand, that your "rising damp" is of capillary nature. Make sure the mason has put in a waterproofing barrier (polyane film).

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