IICRC WATER RESTORATION TECHNICIAN

IICRC WATER RESTORATION TECHNICIAN

(ACTUAL 2025/2026) QUESTIONS AND VERIFIED

ANSWERS.

ANSI/IICRC S-500 Water Damage Standards - <>>What document dictates the Standards for the Water Damage Restoration Industry?

Work authorization -<>>What needs to be signed before restoration begins?

To reduce drying times -<>>Why do we extract water from carpet multiple times?

Small amounts of airflow and warm air -<>>Wet wood subflooring Under stone or tile drying strategy requires...

Yes -<>>Can you use small amounts of airflow and warm air to dry concrete?

It increases -<>>What happens to the VP in a material when we heat it?

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It increases -<>>When you increase vapor pressure by heating, what happens to material's potential for evaporation...?

Condensation occurs, evaporation stops -<>>What happens if the material is cooler than the dewpoint temperature?

Evaporation Will occur -<>>VP (vapor pressure) of material = high; VP of air = low. What will happen?

With the application of heat, ice turns to a liquid and (with more heat) liquid turns to a gas. The reversal happens with the removal of heat -<>>Describe water phase changes

Vapor absorbing -<>>What does Hygroscopic mean?

Microbial (mold) and bending or folding - <>>Describe some examples of secondary damage

Hygroscopic materials -<>>The secondary damage happened in Hygroscopic or non-Hygroscopic materials?

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When the rate of evaporation does not exceed the rate of dehumidification -<>>What is a balance drying system?

Open -<>>If you use the outdoor air in your dry process, is that an open or closed drying system?

If it is warmer and dryer -<>>How do you know if you can use the outdoor air in your drying strategy?

Remove particulate from the air -<>>What does an air filtration device (AFD) do?

In category three water losses -<>>When can an AFD used?

When individuals are at risk or compromised - <>>When should an indoor environmental professional "IEP" be used?

Grains per pound (GPP) -<>>The amount of water vapor mixed with a given volume of dry air is called

Vapor pressure -<>>The pressure exerted by the water (vapor) molecules in the air on surrounding surfaces is called

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