Comprehensive IICRC Water Damage
Restoration (WRT) Certification, IICRC
Water Damage Restoration Technician,
IICRC Water Damage Restoration Training
Manual exam LATEST EXAM SETS |1000
ACTUAL EXAM QUESTIONS WITH VERIFIED
ANSWERS LATEST UPDATED 2026-2027
A+ RATED
Water - ans_______ has strong bonding properties and the ability to dissolve materials. Only
natural substance that's found in 3 states (liquid, solid (ice), gas (vapor)) at temps norm.
found in earth.
Excessive moisture - ans______ also occurs in buildings b/c of 1)construction defects, 2)
plumbing failures, 3) damage from freezing & 4) improper maintenance.
Microorganisms/Microbes - ansWhen abnormal moisture is present, _______ will rapidly
multiply and cause structural deterioration, create odors & potentially create serious health
issues.
Abnormally wet - ansSingle most critical factor in defining amount of potential damage is the
amount of time the structure remains/was ______.
Respond quickly - ans#1 critical course of action in restorative drying is to ______.
Restorative drying process - ans1) Assessment
2) Documentation
3) Controlled drying
4) Selective replacement
drying process - ansDue to the # of variables, restorer must frequently revisit the
1) tools
2) systems
3) science throughout the ______
IICRC S500 - ansStandard of care for the water restoration profession
mold - ansAll ___ is fungi but not all fungi is ___.
Goal of restorative process - ans______ is to transform an abnormally wet, potentially
damaged structure into an environment of equal or better appearance.
Assessment (1 of restorative drying process) - ans______ : Identify all affected materials
Documentation (2 of restorative drying process) - ans_______ : Documents what types of
materials have been affected. Must evaluate materials against 3 criteria to identify if should
be replaced or restored.
1) degree of containment
2) damage to item
3) replacement cost versus restoration cost
pathogenic - ansCausing or able to cause disease
8 - ans1 Gallon = __.34 pounds (8 is always weight)
Disruptive - ansTwo drying methods:
1) ________ "d for demolition"
2) Aggressive
,Comprehensive IICRC Water Damage
Restoration (WRT) Certification, IICRC
Water Damage Restoration Technician,
IICRC Water Damage Restoration Training
Manual exam LATEST EXAM SETS |1000
ACTUAL EXAM QUESTIONS WITH VERIFIED
ANSWERS LATEST UPDATED 2026-2027
A+ RATED
Disruptive - drying method - ansa) more contaminated
b) more damaged
c) replacing is cheaper
Aggressive - drying method - ans"DRYING IN PLACE" / little to no manipulation
a) less contaminated
b) less damaged
c) replacing is COSTLY
d) can ONLY be used w/ category 1
Drying Pie (3) - ans1) Humidity
2) Air flow
3) Temperature
High - ansVapor pressure always goes from ____ to low.
Principles of Drying - ans1) Safety/ Health
2) Document & Inspect
3) Mitigate Further Damage
4) Clean and Dry Affected Areas
5) Complete Restoration and Repairs
Safety hazards - ansThe technician's FIRST responsibility when arriving at a water damage
site is to identify and eliminate ________.
Safety Awareness - ansFirst line of defense against safety hazards is _______. 2nd is to
identify the presence of regulated building materials (asbestos, lead, PCBs)
Hierarchy of Controls - ansElimination
Substitution
Engineering Controls
Administrative Controls
PPE (LEAST EFFECTIVE)
PPE - ansLast line of defense is ____
Work Authorization Form - ansAn agreement between the building owner and the restoration
contractor. The form specifies who is responsible for payment and the terms of payment
MIP - ansmaterially interested parties
Moisture meter - ansA non-invasive (non-penetrating) _______ ___ tracks the migration of
water below hard finish surfaces, such as under vinyl tile or ceramic tile
- ansA invasive/ penetrating device to check moisture on carpet and padding.
Warm - ans_____ air holds MORE moisture than cold air. Air is dryer in winter.
Lowered - ansAs the air gets warmer, RELATIVE HUMIDITY is _______.
,Comprehensive IICRC Water Damage
Restoration (WRT) Certification, IICRC
Water Damage Restoration Technician,
IICRC Water Damage Restoration Training
Manual exam LATEST EXAM SETS |1000
ACTUAL EXAM QUESTIONS WITH VERIFIED
ANSWERS LATEST UPDATED 2026-2027
A+ RATED
100% RH in cold climate is DRYER than 50% RH in a warmer climate.
Relative Humidity (RH) - ans____ is the amount of moisture in the air compared to what the
air can hold at that temperature.
RH is the amount of water vapor (individual water molecules) in a given parcel of air
RELATIVE to the # of water molecules that could be in that particular parcel of air.. without
it reaching dew point (
Air is 78% nitrogen molecules, oxygen and others. Molecules aren't interacting w/ eachother.
Space between them. We can put WATER MOLECULES in that space.
RH = how many water molecules we are putting in the spaces between the air molecules.
As air is heated --> molecules move faster --> spread further apart ---> VOLUME
INCREASES. More space for more water molecules.
Category 1 Water - answater that originates from a sanatary water source and does not pose
substantial risk.
Examples broken water lines, tub or sink overflows with no contaminants, appliance
malfunctions involving water supply lines, rainwater
odor - ans1st indicator that it went from category 1 to 2 --> ___
Category 2 Water - ansWater that has a significant degree of chemical, biological and/or
physical containment.
Aquarium leaks, waterbed leaks, toilet bowl overflows (that contain urine), dishwasher or
clothes washer discharge, and water that enters the structure from hydrostatic pressure.
Has the potential to cause sickness or discomfort and should NOT be allowed to dwell in a
structure for an extended period of time.
Category 3 Water - ansWater that contains grossly contaminated water and can cause harmful
reactions to humans. Carries PATHOGENIC AGENTS
examples sewage, all forms of flooding seawater, water from river, etc.
Special Situations - ans
Category 1 - ansOriginates from a sanitary water source.
, Comprehensive IICRC Water Damage
Restoration (WRT) Certification, IICRC
Water Damage Restoration Technician,
IICRC Water Damage Restoration Training
Manual exam LATEST EXAM SETS |1000
ACTUAL EXAM QUESTIONS WITH VERIFIED
ANSWERS LATEST UPDATED 2026-2027
A+ RATED
Category 2 - ansContaminated; may cause discomfort or sickness.
Category 3 - ansGrossly contaminated; includes toxins, pathogens.
Class 1 - ansLeast amount of water, absorption and evaporation load (less than 5% porous
materials wet compared to SF of wet walls, floors and ceilings).
Class 2 - ansLarge amount of water, absorption and evaporation load (5%-40% porous
materials wet compared to SF of wet walls, floors and ceilings).
Class 3 - ansGreatest amount of water, absorption and evaporation load (over 40% porous
materials wet compared to SF of wet walls, floors and ceilings).
Class 4 - ansSpecialty drying - (hardwood; plaster; concrete) - deep pockets of saturation.
Principles of Drying - ansRemove excess / evaporation / dehumidification (ventilation) /
temperature control.
Light wand - ansPerimeter of water loss; extract glue-down carpets; follow-up extraction-
stationary tool.
Stationary tool - anse.g., Water claw; Flash Xtractor - subsurface tool; extract carpet and
cushion.
Self-propelled tools - anse.g., Rover; Xtreme Xtractor - self-propelled riding tool; multi-
speed; extract carpet and cushion.
Vacuum squeegee - ansUsed for concrete; hardwood; vinyl; laminate.
Submersion pumps - ansFormula - (ft2 x inches deep) ÷ 12" = ft3 water x 7.48 = water
volume.
Airmovers - ansCentrifugal (laminar); axial (high-amperage; low amperage; focus ability).
Electrical safety - ansLightweight extension cords; three-prong plugs; maintain electrical cord
safety.
Structural Cavity Drying Systems (SCDS) - ansIncludes vented (e.g., Turbovents 18"-48"
widths; Octi-dry; Air Wolf) and injected (e.g., Injectidry; Dri-Force; Omni-dry; Direct-it In).
Air Filtration Devices - ansAFDs (negative air machines - NAM; air scrubbers; HEPA
filters).
Dehumidification equipment - ansAHAM rating - pints removed at 80º F / 60% RH in 24
hours.
Type Dehumidifier - ansStandard, Conventional, Low Grain Refrigerant (LGR), Desiccant
(with silica gel).
Refrigerants - ansMost efficient operating conditions 70º - 90º F.
Desiccants - ansMost efficient with incoming air from coolest/driest air possible; capable of
creating pressure differentials.
Restoration (WRT) Certification, IICRC
Water Damage Restoration Technician,
IICRC Water Damage Restoration Training
Manual exam LATEST EXAM SETS |1000
ACTUAL EXAM QUESTIONS WITH VERIFIED
ANSWERS LATEST UPDATED 2026-2027
A+ RATED
Water - ans_______ has strong bonding properties and the ability to dissolve materials. Only
natural substance that's found in 3 states (liquid, solid (ice), gas (vapor)) at temps norm.
found in earth.
Excessive moisture - ans______ also occurs in buildings b/c of 1)construction defects, 2)
plumbing failures, 3) damage from freezing & 4) improper maintenance.
Microorganisms/Microbes - ansWhen abnormal moisture is present, _______ will rapidly
multiply and cause structural deterioration, create odors & potentially create serious health
issues.
Abnormally wet - ansSingle most critical factor in defining amount of potential damage is the
amount of time the structure remains/was ______.
Respond quickly - ans#1 critical course of action in restorative drying is to ______.
Restorative drying process - ans1) Assessment
2) Documentation
3) Controlled drying
4) Selective replacement
drying process - ansDue to the # of variables, restorer must frequently revisit the
1) tools
2) systems
3) science throughout the ______
IICRC S500 - ansStandard of care for the water restoration profession
mold - ansAll ___ is fungi but not all fungi is ___.
Goal of restorative process - ans______ is to transform an abnormally wet, potentially
damaged structure into an environment of equal or better appearance.
Assessment (1 of restorative drying process) - ans______ : Identify all affected materials
Documentation (2 of restorative drying process) - ans_______ : Documents what types of
materials have been affected. Must evaluate materials against 3 criteria to identify if should
be replaced or restored.
1) degree of containment
2) damage to item
3) replacement cost versus restoration cost
pathogenic - ansCausing or able to cause disease
8 - ans1 Gallon = __.34 pounds (8 is always weight)
Disruptive - ansTwo drying methods:
1) ________ "d for demolition"
2) Aggressive
,Comprehensive IICRC Water Damage
Restoration (WRT) Certification, IICRC
Water Damage Restoration Technician,
IICRC Water Damage Restoration Training
Manual exam LATEST EXAM SETS |1000
ACTUAL EXAM QUESTIONS WITH VERIFIED
ANSWERS LATEST UPDATED 2026-2027
A+ RATED
Disruptive - drying method - ansa) more contaminated
b) more damaged
c) replacing is cheaper
Aggressive - drying method - ans"DRYING IN PLACE" / little to no manipulation
a) less contaminated
b) less damaged
c) replacing is COSTLY
d) can ONLY be used w/ category 1
Drying Pie (3) - ans1) Humidity
2) Air flow
3) Temperature
High - ansVapor pressure always goes from ____ to low.
Principles of Drying - ans1) Safety/ Health
2) Document & Inspect
3) Mitigate Further Damage
4) Clean and Dry Affected Areas
5) Complete Restoration and Repairs
Safety hazards - ansThe technician's FIRST responsibility when arriving at a water damage
site is to identify and eliminate ________.
Safety Awareness - ansFirst line of defense against safety hazards is _______. 2nd is to
identify the presence of regulated building materials (asbestos, lead, PCBs)
Hierarchy of Controls - ansElimination
Substitution
Engineering Controls
Administrative Controls
PPE (LEAST EFFECTIVE)
PPE - ansLast line of defense is ____
Work Authorization Form - ansAn agreement between the building owner and the restoration
contractor. The form specifies who is responsible for payment and the terms of payment
MIP - ansmaterially interested parties
Moisture meter - ansA non-invasive (non-penetrating) _______ ___ tracks the migration of
water below hard finish surfaces, such as under vinyl tile or ceramic tile
- ansA invasive/ penetrating device to check moisture on carpet and padding.
Warm - ans_____ air holds MORE moisture than cold air. Air is dryer in winter.
Lowered - ansAs the air gets warmer, RELATIVE HUMIDITY is _______.
,Comprehensive IICRC Water Damage
Restoration (WRT) Certification, IICRC
Water Damage Restoration Technician,
IICRC Water Damage Restoration Training
Manual exam LATEST EXAM SETS |1000
ACTUAL EXAM QUESTIONS WITH VERIFIED
ANSWERS LATEST UPDATED 2026-2027
A+ RATED
100% RH in cold climate is DRYER than 50% RH in a warmer climate.
Relative Humidity (RH) - ans____ is the amount of moisture in the air compared to what the
air can hold at that temperature.
RH is the amount of water vapor (individual water molecules) in a given parcel of air
RELATIVE to the # of water molecules that could be in that particular parcel of air.. without
it reaching dew point (
Air is 78% nitrogen molecules, oxygen and others. Molecules aren't interacting w/ eachother.
Space between them. We can put WATER MOLECULES in that space.
RH = how many water molecules we are putting in the spaces between the air molecules.
As air is heated --> molecules move faster --> spread further apart ---> VOLUME
INCREASES. More space for more water molecules.
Category 1 Water - answater that originates from a sanatary water source and does not pose
substantial risk.
Examples broken water lines, tub or sink overflows with no contaminants, appliance
malfunctions involving water supply lines, rainwater
odor - ans1st indicator that it went from category 1 to 2 --> ___
Category 2 Water - ansWater that has a significant degree of chemical, biological and/or
physical containment.
Aquarium leaks, waterbed leaks, toilet bowl overflows (that contain urine), dishwasher or
clothes washer discharge, and water that enters the structure from hydrostatic pressure.
Has the potential to cause sickness or discomfort and should NOT be allowed to dwell in a
structure for an extended period of time.
Category 3 Water - ansWater that contains grossly contaminated water and can cause harmful
reactions to humans. Carries PATHOGENIC AGENTS
examples sewage, all forms of flooding seawater, water from river, etc.
Special Situations - ans
Category 1 - ansOriginates from a sanitary water source.
, Comprehensive IICRC Water Damage
Restoration (WRT) Certification, IICRC
Water Damage Restoration Technician,
IICRC Water Damage Restoration Training
Manual exam LATEST EXAM SETS |1000
ACTUAL EXAM QUESTIONS WITH VERIFIED
ANSWERS LATEST UPDATED 2026-2027
A+ RATED
Category 2 - ansContaminated; may cause discomfort or sickness.
Category 3 - ansGrossly contaminated; includes toxins, pathogens.
Class 1 - ansLeast amount of water, absorption and evaporation load (less than 5% porous
materials wet compared to SF of wet walls, floors and ceilings).
Class 2 - ansLarge amount of water, absorption and evaporation load (5%-40% porous
materials wet compared to SF of wet walls, floors and ceilings).
Class 3 - ansGreatest amount of water, absorption and evaporation load (over 40% porous
materials wet compared to SF of wet walls, floors and ceilings).
Class 4 - ansSpecialty drying - (hardwood; plaster; concrete) - deep pockets of saturation.
Principles of Drying - ansRemove excess / evaporation / dehumidification (ventilation) /
temperature control.
Light wand - ansPerimeter of water loss; extract glue-down carpets; follow-up extraction-
stationary tool.
Stationary tool - anse.g., Water claw; Flash Xtractor - subsurface tool; extract carpet and
cushion.
Self-propelled tools - anse.g., Rover; Xtreme Xtractor - self-propelled riding tool; multi-
speed; extract carpet and cushion.
Vacuum squeegee - ansUsed for concrete; hardwood; vinyl; laminate.
Submersion pumps - ansFormula - (ft2 x inches deep) ÷ 12" = ft3 water x 7.48 = water
volume.
Airmovers - ansCentrifugal (laminar); axial (high-amperage; low amperage; focus ability).
Electrical safety - ansLightweight extension cords; three-prong plugs; maintain electrical cord
safety.
Structural Cavity Drying Systems (SCDS) - ansIncludes vented (e.g., Turbovents 18"-48"
widths; Octi-dry; Air Wolf) and injected (e.g., Injectidry; Dri-Force; Omni-dry; Direct-it In).
Air Filtration Devices - ansAFDs (negative air machines - NAM; air scrubbers; HEPA
filters).
Dehumidification equipment - ansAHAM rating - pints removed at 80º F / 60% RH in 24
hours.
Type Dehumidifier - ansStandard, Conventional, Low Grain Refrigerant (LGR), Desiccant
(with silica gel).
Refrigerants - ansMost efficient operating conditions 70º - 90º F.
Desiccants - ansMost efficient with incoming air from coolest/driest air possible; capable of
creating pressure differentials.
