Most restoration companies will take psychrometric readings.

Somewhere along the way they must have been told that they are supposed to. Very few, however, actually know what these readings mean on their drying jobs.

Almost ALL the students who come through our school in Tennessee have said that they use psychrometrics on every water damage.

BUT of all these students (over 1500) only 2 PEOPLE have truly understood what psychrometry was about before they came to our class.

Here is a challenge for you:

Ask This Question To Your Contractors...

Then See Not Only If They Take Readings, But If They Truly Understand!

There are dozens of things that your readings will tell you if you know what you are looking for. We call them "red flags" in our school.

There are some things that you want to check for to make sure that they are happening, and some others that you want to check for to make sure that they aren't.

Here's Just A Few:

1) You want your RH below 40% on the next day (Not 24 Hours) after extraction. (It is the only time RH matters on your drying job)

2) GPP in the wet area should be below 55-60 the next day. (Not 24 hours)

3) Your temperature in your affected environment should be between 70-90 degrees.

4) The HVAC system (When Cooling) should be putting out low temperatures, and high RH.

5) The DH readings should have high temperatures, and low RH.

6) The GPP in the areas around your affected area (Outside, Unaffected) should be sealed off from the wet environment. (No Infiltration or Exfiltration)

7) You want to pull the grains in your affected area down lower than they are in the areas around it. (Create A Drying Chamber)

8) An Air Conditioner is a Standard Dehumidifier, and will remove water from the air,

HOWEVER, your goal is to make it STOP pulling water.

9) What is your grain depression between your wet air and your DH?