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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Restoration Procedures | 20% | - Structural and material drying methods - Handling sanitary vs unsanitary water losses - Containment and contamination control - Extraction and removal of water |
| Topic 2: Drying Science & Psychrometry | 25% | - Evaporation, condensation, dehumidification - Psychrometric principles: humidity, temperature, airflow - Equipment types: dehumidifiers, air movers, heaters |
| Topic 3: Inspection, Assessment & Documentation | 15% | - Moisture measurement and mapping - Site inspection procedures - Documentation and reporting requirements |
| Topic 4: Health, Safety & Microorganisms | 15% | - Microorganisms: mold, bacteria, pathogens - Hazard identification and control - Personal protective equipment (PPE) - Sanitization and disinfection standards |
| Topic 5: Principles of Water Damage Restoration | 20% | - IICRC S500 Standard overview - Categories of water damage (Clean, Grey, Black) - Classes of water loss (1–4) |
| Topic 6: Effects of Water on Materials & Structures | 5% | - Determining restorable vs non-restorable items - Impact on building materials, contents, assemblies |
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NEW QUESTION # 26
What should a restorer do when pre-existing damage is discovered?
Answer: D
Explanation:
The IICRC WRT body of knowledge requires thatpre-existing damage be documented and disclosed to all materially interested parties. This includes property owners, occupants, insurers, and other stakeholders with a financial or legal interest in the project.
Pre-existing damage may include deterioration, staining, microbial growth, or structural issues unrelated to the current water loss. The WRT manual emphasizes that failing to document such conditions can expose restorers to disputes, denied claims, or allegations of causing damage that already existed.
Documentation should include written descriptions, photographs, moisture readings, and notes distinguishing pre-existing conditions from water-loss-related damage. Transparency ensures informed decision-making and protects the restorer from liability.
Limiting disclosure to only the adjuster or ignoring pre-existing damage violates professional standards.
Increasing pricing or misclassifying damage is inappropriate. The WRT standard prioritizes accurate documentation and ethical communication.
NEW QUESTION # 27
In a room that measures 15 feet × 25 feet with the entire floor wet, minimal wicking up the walls (less than 2 feet), and no offsets; initially, how many air movers should be added?
Answer: C
Explanation:
The IICRC WRT guidance uses an initial air-mover recommendation based on affected surface area to support evaporation across wet materials. The WRT manual summarizes the S500-based starting method: (1) place one air mover for each affected area, then (2) add one air mover for every 50 to 70 square feet of affected floor area, and then consider additional adjustments for offsets/insets and other complexities as applicable.
Here, the room is a single affected area and the entire floor is wet. The floor area is 15 × 25 = 375 square feet.
Using the WRT/S500 initial guidance, the floor-area addition is:
* High end: 375 ÷ 50 = 7.5 # round up to 8 air movers
* Low end: 375 ÷ 70 = 5.36 # round up to 6 air movers
Then include the "one per affected area" base air mover for the room. That yields an initial range of 7 to 9 total air movers (1 + 6 to 1 + 8). This matches the correct selection range.
The scenario also states wall wicking is minimal (less than 2 feet) and there are no offsets, so the wall-above-
2-feet rule and offset additions do not apply in the initial count. The objective at this stage is continuous airflow across wet surfaces to maintain a low-humidity boundary layer at the material surface, supporting rapid evaporation. The WRT manual further notes that airflow needs vary by the amount of wet surface area, accessibility, and other field limitations, and professional judgment may require adjustment after monitoring confirms actual drying progress.
NEW QUESTION # 28
Who should a technician get documented authorization from before applying an antimicrobial (biocide)?
Answer: B
Explanation:
The IICRC WRT body of knowledge clearly states that before applying an antimicrobial (biocide), a technician must obtaindocumented authorization from the owner or occupant, or another legally authorized representative of the property. This requirement exists because antimicrobial application involves introducing regulated chemical agents into an occupied environment, which carries potential health, legal, and liability implications.
The WRT manual emphasizes informed consent as a professional and ethical obligation. Owners or occupants must be made aware of the purpose, limitations, and potential risks associated with antimicrobial use.
Documented authorization protects all materially interested parties by confirming that the decision to apply a biocide was disclosed, understood, and approved.
Insurance adjusters do not have authority over health decisions within a structure, reconstruction contractors do not represent occupancy interests, and physicians are not responsible for property treatment approvals. The responsibility lies with the property owner or occupant.
This requirement aligns with EPA pesticide regulations and the ANSI/IICRC S500 Standard, reinforcing transparency, safety, and defensibility in restoration practices.
NEW QUESTION # 29
In a home with a Class 2 intrusion, where the floor is 1,300 square feet with an 8-foot ceiling, what is the initial recommended Pints Per Day (PPD) if using LGR dehumidifiers?
Answer: C
Explanation:
The IICRC WRT body of knowledge teaches that initial dehumidification capacity for LGR dehumidifiers is based oncubic footage and class of water intrusion. Class 2 intrusions involve a larger amount of moisture absorption than Class 1 but do not reach the full saturation of Class 3.
First, calculate the affected volume:
1,300 sq ft × 8 ft =10,400 cubic feet.
ForClass 2 losses, a commonly accepted WRT guideline is approximatelyone LGR dehumidifier (#200-210 PPD)per10,000-12,000 cubic feet. This capacity balances evaporation demand without over-drying or inefficiency.
A recommendation of 208 PPD aligns directly with this guidance and reflects standard WRT training tables used for initial equipment placement. Lower values (26 or 99 PPD) are insufficient for the moisture load, while 303 PPD exceeds the initial requirement for a Class 2 loss and would require justification through monitoring data.
The WRT manual emphasizes that this is aninitial recommendationand must be validated by daily psychrometric and material moisture monitoring. Equipment may be adjusted as drying progresses.
NEW QUESTION # 30
When performing the initial inspection, which of the following could help determine the perimeter of wet carpet and cushion (pad, underlay)?
Answer: B
Explanation:
The IICRC WRT body of knowledge recommends usinginfrared (IR) cameras and moisture sensorsto help determine the perimeter of wet carpet and cushion during the initial inspection. These tools allow restorers to quickly and non-destructively identify moisture patterns across large areas.
IR cameras can highlight temperature anomalies caused by evaporative cooling, while moisture sensors provide confirmation of moisture presence beneath carpet surfaces. The WRT manual stresses that IR imaging must always be verified with moisture detection instruments to avoid false positives.
Disengaging carpet or relying on touch is invasive, time-consuming, and unreliable. Borescopes and anemometers are not designed for carpet moisture detection.
Using appropriate detection tools supports accurate scoping, efficient drying design, and defensible documentation-core principles of professional restoration practice under the IICRC WRT standard.
NEW QUESTION # 31
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