Recovery from water damage

[Axel Svensson]

Hello,
The damage technician measured the moisture levels from a water damage today, dehumidifier for 2 weeks and then a heating mat for 3 days. He considers it dry.
I measured myself tonight, as the carpenter is going to lay the floor tomorrow... very high values, I think?!
The measurement was taken directly when the heating mat was removed.

The picture showing 33 is a reference value, which I consider dry.
Tested on wood in the garage which gives around 30.

 

[Centano]

It may be that you are measuring too close to the metal pipes and getting incorrect values. What happens if you measure at the same distance from the pipes but higher up along the pipes?

Then the meter should be held at 90 degrees to the measuring surface and also kept away from the floor/wall angle by a few centimeters.

 

[Axel Svensson]

It might be that you are measuring too close to the metal pipes and getting incorrect readings. What happens if you measure at the same distance from the pipes but higher up along the pipes?

Also, the meter should be held at 90 degrees to the measuring surface and kept away from the floor/wall angle by a number of centimeters.

Here is an example.
45cm from the pipe.
Reading 122 where I think it looks damp (darker). Then two measurements just a few cm to the side, significantly lower readings.

 

[Centano]

That darker spot is a bit suspicious, looks like moisture on the surface. The meter you're using can give incorrect readings when measuring so close to a corner.
Do you have the option to measure with a pin-type moisture meter? Preferably with an insulated hammer electrode so you can measure in-depth.

 

[Axel Svensson]

The darker spot is a bit odd, looks like moisture on the surface. The meter you have can give incorrect readings when measuring so close to a corner.
Don't you have the possibility to measure with a moisture ratio meter with pins? Preferably with an insulated hammer electrode so you can measure at a depth.

yesterday they sprayed chlorine, they say it comes from there. The moisture technician has measured with pins, about 25 was the result. The small amount of moisture that remains will distribute itself. They GUARANTEE that it's okay to build over.

 

[Workingclasshero]

Swim calmly and start working when you think it's dry enough.

 

[Axel Svensson]

Swim calmly and start the work when you think it is dry enough.

I and the moisture technician came at odds, you could say.
He says it's fine to lay the floor, I get this under the building plastic.
Reasonable? This area has previously not been dehumidified as the plastic has been over this concrete and the focus has been on the moisture under the window, 1.6m away. See the pipes at the top of the picture.

 

[Workingclasshero]

I and the moisture technician had a disagreement, you could say. He says it's just a matter of laying the floor, but I get this under the construction plastic sheeting. Reasonable? This area has not been dehumidified before, as the plastic has been over this concrete and the focus has been on the moisture under the window, 1.6m away. See the pipes at the top of the image.

Moisture technician?! You're supposed to read a number, how hard can it be?