ᐅ Water Damage on New Screed

Hello!
The heavy rain over the past few days has caused water damage at my construction site.
The recently installed screed (anhydrite) on an area of 3x4 meters (10x13 feet) is underwater or completely saturated 😡
Question for the experts: Can the screed withstand this? Can it stay in place after drying, and what is the most cost-effective way to dry the surface?

An anhydrite screed will not withstand this, as gypsum, unlike cement, continues to react with water repeatedly until it breaks down.

The neighbor had the same issue, and the screed was ruined. In his case, a hose burst in the evening and flooded the area. Even floor drying did not help.

The company removed the screed and installed a new one. They covered the costs.

If the company has covered the costs, then that’s good. But often this is not the case. I find that anhydrite screed is not very useful either. It is inexpensive, but not suitable when exposed to water.

Good, if this screed contains gypsum, then that is clear. It cannot withstand significant water damage. I think the screed needs to be drilled open and then warm air should be blown in. However, the insulation must not be damaged.

That is quite a challenge—to drill into the screed without damaging the insulation. I also believe that with this type of screed, it needs to be replaced.