IICRC S500 Water Mitigation
Dehumidification - ✔️✔️the process of removing water vapor from the air.
Rate of Dehumidification - ✔️✔️must be at least equal to the rate of evaporation.
True or False - ✔️✔️Elevated vapor pressure in a room Can cause secondary damage
to hygroscopic materials
True or False - ✔️✔️The control of temperature is important to enhance both
evaporation and dehumidification for effective drying
True or False - ✔️✔️When temperature increases evaporation of absorbed water
increases and water vapor suspended in air also increases.
Classification of Water Intrusion - ✔️✔️described as Class 1, 2, 3, or 4. Must be
determined to calculate the amount of dehumidification required in drying process,
based on the amount of wet surface area, permeance/porosity of materials in drying
area.
Class 1 - ✔️✔️is the least amount of water absorption and evaporation load, affecting
less 5% of porous materials with minimal absorption into low evaporation materials.
Class 2 - ✔️✔️has a significant amount of water absorption and evaporation load,
affection 5-40% porous materials, with minimal absorption into low evaporated materials
Class 3 - ✔️✔️has the greatest amount of water absorption and evaporation load,
affecting more than 40% porous materials and minimal absorption into low evaporated
materials
Class 4 - ✔️✔️has deeply held or bound water, and significant absorption into low
evaporation materials.
Determine the Class of water for a 20' x 20' x 8 ' room, with an entirely wet floor.. -
✔️✔️Affected area/Total SF = % affected
400/1440 = .27777 x 100 = 28%
28% = Class 2
Determine the Class of Water for a 20' x 20' x 8' room, with only half the floor affected
and arriving within 24 hours of loss. - ✔️✔️Affected area/total sf = % affected
200/1440 = .13888 x 100 = 14%
14% = Class 2
, Determine Class of water for a 20' x 20' x 8' room, with entirely wet plywood subfloor
arriving 48 hours after loss - ✔️✔️affected area/total sf = % affected
Class 4 due to deeply bound water sitting for long time
The homeowner - ✔️✔️is responsible to take the necessary steps to preserve and
protect their property from further damage
Four principles of water damage restoration: - ✔️✔️Provide for health and safety of
workers and occupants; Document everything; Mitigate, and Dry
Four principles of drying - ✔️✔️Extract, Evaporate, dehumidify, control temp
Extraction - ✔️✔️is removing excess water and is the first step in mitigation
Evaporation - ✔️✔️is achieved by using energy (heat) to transform water trapped in
porous materials into a vapor, thereby releasing the moisture from the materials
Categories of Water - ✔️✔️there are four categories - determined by range of
contamination of the source and quality of water
Category 1 water - ✔️✔️Water originating from sanitary water source, with no
deterioration, does not pose risk to skin or if ingested
Category 2 Water - ✔️✔️Water containing significant contamination from materials,
unsafe levels of microorganisms, causes discomfort or sickness.
Category 3 Water - ✔️✔️Water grossly contaminated with pathogens, toxins, bacteria,
causes sickness
Regulated or Hazardous Material and Mold - ✔️✔️the last category of water, without
number designation, requiring a specialized environmental expert (EIP) to assist where
government regulations apply.
The ANSI/IICRC S500 - ✔️✔️Is the standard of care for the water damage restoration
industry, providing foundation for basic principles of proper restoration practices.
When the ANSI/IICRC S500 uses the word "Shall" it means - ✔️✔️it is something
mandatory due to laws/regulations
When the ANSI/IICRC S500 uses the word "Should" it means - ✔️✔️it is something
that is mandatory but not due to laws
When the ANSI/IICRC S500 uses the word "Recommended" it means - ✔️✔️it is
something that is advised or suggested to do
Dehumidification - ✔️✔️the process of removing water vapor from the air.
Rate of Dehumidification - ✔️✔️must be at least equal to the rate of evaporation.
True or False - ✔️✔️Elevated vapor pressure in a room Can cause secondary damage
to hygroscopic materials
True or False - ✔️✔️The control of temperature is important to enhance both
evaporation and dehumidification for effective drying
True or False - ✔️✔️When temperature increases evaporation of absorbed water
increases and water vapor suspended in air also increases.
Classification of Water Intrusion - ✔️✔️described as Class 1, 2, 3, or 4. Must be
determined to calculate the amount of dehumidification required in drying process,
based on the amount of wet surface area, permeance/porosity of materials in drying
area.
Class 1 - ✔️✔️is the least amount of water absorption and evaporation load, affecting
less 5% of porous materials with minimal absorption into low evaporation materials.
Class 2 - ✔️✔️has a significant amount of water absorption and evaporation load,
affection 5-40% porous materials, with minimal absorption into low evaporated materials
Class 3 - ✔️✔️has the greatest amount of water absorption and evaporation load,
affecting more than 40% porous materials and minimal absorption into low evaporated
materials
Class 4 - ✔️✔️has deeply held or bound water, and significant absorption into low
evaporation materials.
Determine the Class of water for a 20' x 20' x 8 ' room, with an entirely wet floor.. -
✔️✔️Affected area/Total SF = % affected
400/1440 = .27777 x 100 = 28%
28% = Class 2
Determine the Class of Water for a 20' x 20' x 8' room, with only half the floor affected
and arriving within 24 hours of loss. - ✔️✔️Affected area/total sf = % affected
200/1440 = .13888 x 100 = 14%
14% = Class 2
, Determine Class of water for a 20' x 20' x 8' room, with entirely wet plywood subfloor
arriving 48 hours after loss - ✔️✔️affected area/total sf = % affected
Class 4 due to deeply bound water sitting for long time
The homeowner - ✔️✔️is responsible to take the necessary steps to preserve and
protect their property from further damage
Four principles of water damage restoration: - ✔️✔️Provide for health and safety of
workers and occupants; Document everything; Mitigate, and Dry
Four principles of drying - ✔️✔️Extract, Evaporate, dehumidify, control temp
Extraction - ✔️✔️is removing excess water and is the first step in mitigation
Evaporation - ✔️✔️is achieved by using energy (heat) to transform water trapped in
porous materials into a vapor, thereby releasing the moisture from the materials
Categories of Water - ✔️✔️there are four categories - determined by range of
contamination of the source and quality of water
Category 1 water - ✔️✔️Water originating from sanitary water source, with no
deterioration, does not pose risk to skin or if ingested
Category 2 Water - ✔️✔️Water containing significant contamination from materials,
unsafe levels of microorganisms, causes discomfort or sickness.
Category 3 Water - ✔️✔️Water grossly contaminated with pathogens, toxins, bacteria,
causes sickness
Regulated or Hazardous Material and Mold - ✔️✔️the last category of water, without
number designation, requiring a specialized environmental expert (EIP) to assist where
government regulations apply.
The ANSI/IICRC S500 - ✔️✔️Is the standard of care for the water damage restoration
industry, providing foundation for basic principles of proper restoration practices.
When the ANSI/IICRC S500 uses the word "Shall" it means - ✔️✔️it is something
mandatory due to laws/regulations
When the ANSI/IICRC S500 uses the word "Should" it means - ✔️✔️it is something
that is mandatory but not due to laws
When the ANSI/IICRC S500 uses the word "Recommended" it means - ✔️✔️it is
something that is advised or suggested to do
