Study Modules for the IICRC WRT Exam
Ten modules covering the topics the exam draws on
These IICRC WRT study modules break the ANSI/IICRC S500 standard into ten focused units that follow the order the Water Damage Restoration Technician exam works in. Instead of handing you the whole reference, each module isolates one topic — water categories and classes, psychrometry, structural drying, safety and PPE, equipment selection, moisture measurement, documentation, contents, mold awareness and professional responsibilities — and works through the definitions, the numbers and the field decisions behind them.
Each module is written in plain restoration language, with worked examples using real GPP and dehumidifier sizing figures and knowledge checks so you find your weak areas before test day rather than during it. The ordering matches the flow of a live class, so classroom students can use them to reinforce a lecture and self-study candidates can run start to finish. Pair them with the free IICRC WRT practice test, the WRT flashcards and the psychrometric calculators.
The module library is included with a membership; the calculators, flashcards and sample questions stay free. New to the trade? Read the IICRC WRT certification guide first, then see pricing.
Principles of Drying
Remove excess water, evaporation, dehumidification, and temperature control.
8 lessons
Water Categories (1-3)
Clean, gray, and black water classifications and handling protocols.
6 lessons
Classes of Water Loss (1-4)
Evaporation rates, initial equipment calculations, and material considerations.
7 lessons
Psychrometry & Drying Technology
RH, GPP, dew point, vapor pressure, balanced drying, and HAT principles.
10 lessons
Equipment & Tools
Air movers, dehumidifiers, extractors, moisture meters, and IR cameras.
9 lessons
Extraction Methods
Light wand, stationary, self-propelled, and vacuum squeegee techniques.
5 lessons
Dehumidification
Conventional, LGR, and desiccant performance at various conditions.
7 lessons
Microbiology & Antimicrobials
Growth conditions, EPA/FIFRA requirements, and documentation.
6 lessons
Safety & Documentation
Hazard assessment, project flow, authorization, and monitoring.
5 lessons
Materials & Drying Goals
Wood MC goals, carpet delamination, and material-specific protocols.
6 lessons