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WATER RESTORATION IICRC Exam ( 2024 /2025) | Actual Questions and
Answers Latest Updated 2024/2025 (Graded A+)
The most critical course of action in restoration during is to _______ an begin __________ as soon as possible Answer ✔✔respond quickly & mitigation All restorers should follow the standard of care for the water restoration profession developed by the restoration industry entitled the IICRC ____. Answer ✔✔s to help protect technicians from the many hazards associated with contaminated water losses restorers need to have ready access to several items. these items protect for all _________________ to the body. Answer ✔✔potential exposures respiratory protection regulations state that the employer must provide Answer ✔✔1. medical evaluations
- fit testing
- training the contract clearly states the agreement between the building owner and the restoration contractor. the form specifies who is responsible for payment and should be signed _________ work begins Answer ✔✔before the technicians first responsibility when arriving at a water damage site is to identify communicate and eliminate _________ if reasonably possible Answer ✔✔safety hazards federal regulations apply to handling or disturbing of ____ based paint and asbestos Answer ✔✔lead After safety concerns have been addressed and the initial water source has been stopped, the restorer must complete an evaluation of the water's migration through the structure. During this process, the restorer inspects all ___________ ________ areas. Answer ✔✔potentially affected
the ultimate goal is to find the edge of water migration which moves in a three dimensional path throughout the structure. this is accomplished across carpeted surfaces using a _____ and across most hard surfaces using a _____ (non-penetrating) moisture meter. Answer ✔✔moisture sensor , non- invasive water from a clean source with no substantial risk of causing sickness or discomfort is said to be Answer ✔✔category 1 water that has significant degree of chemical biological and or physical contamination and potential to cause sickness or discomfort is ___________ Answer ✔✔category 2 cleaning procedures must be employed before the drying of a category 2 water loss can continue. at a minimum affected __________ must be removed and disposed of and carpet must be throughly cleaned using a hot water extraction method. Answer ✔✔carpet underlay When water intrusion results from a grossly unsanitary source or carries __________ (disease causing) agents, it is said to be Category 3. Answer ✔✔pathogenic worker and occupant ______ and safety are the 1st priority on every sewage loss. areas affected by category 3 water intrusion are marked and posted as potentially hazardous. Answer ✔✔health Various cleaning and decontamination procedures must be used on Category 3 water losses, including the removal of all ______ ______ materials affected by the water intrusion. Answer ✔✔highly porous when resistance is encountered and performing proper services in a category 3 water loss becomes a challenge restorers _____________ immediately to prevent liability and address the conflict. Answer ✔✔stop work Third party experts are commonly referred to as Indoor Environmental Professionals, or ____. Answer ✔✔IEP Losses where regulated or hazardous materials have contaminated the structure do not change the _______ of water. Answer ✔✔category
Whenever carpet must be disengaged from the tackless strip, a ____ ______ and carpet awl must be used. Answer ✔✔knee kicker the majority of cushion has a skin or mesh on the top side. the purpose of this skin is to ease_____ during installation: it is not a vapor barrier Answer ✔✔carpet stretching If carpet is to be re-installed, technicians should avoid cutting carpet seams unless it is absolutely Answer ✔✔necessary how many gallons of water are presenting a basement that measures 30' x 25' where water is standing at a depth of 6'9" Answer ✔✔30'x25'x6.75' (9"/12") = 5062.5 cuft x 7.48= 37,867. every cubic foot of standing water present in a structure contains ___ gallons (28.3 liters) and each gallon (3.8 liters) of water wights 8.34pounds (3.8 kg) Answer ✔✔7. there are 3 levels of biocidal activity, according to the environmental protection agency EPA( provide starting with weakest) Answer ✔✔1. sanitizer: cleaning treatment designed to reduce # of pathogenic microorganisms to a safe level.
- disinfectant: designed to destroy or inactivate microorganisms but not necessarily their spores
- Sterilizer: a product designed to destroy or eliminate all forms of microorganisms (fungi, bacteria, viruses) and their spores. whenever a chemical antimicrobial or biocide is used restorers must follow the label ____ explicitly Answer ✔✔directions most antimicrobials require that the area of application be vacated by ______ and pets during application and or a period of time after application. Answer ✔✔occupants
- The label is the law" get customer briefing before starting any antimicrobial / biocide treatment. Answer ✔✔
establishing _______ is the best way to set restorative dying goals. A dry standard is established by obtaining a moisture reading using an ____ material Answer ✔✔dry standard , unaffected the numerical value from a moisture meter can be documented and used to monitor progress, for this reason, the amount of moisture absorbed by semiporus structural materials is measured most accurately with a moisture ______ not a moister sensor. Answer ✔✔meter because of their non-invasive nature and quick surveying capabilities, non-invasive meters are the most effective tools for locating abnormal moisture behind and beneath finishing materials such as ______ and resilient ____ floor coverings. Answer ✔✔ceramic tile , vinyl a thermo hygrometer is used to monitor any air that can influence the ________ and or ______ within a restorative drying environment. Answer ✔✔temperature , humidity (relative humidity) to evaluate the progress of structural drying projects, restorers should measure: moisture in ____ being dried (moisture content readings ) __ being used to dry affected materials (psychrometric readings) __produced by mechanical systems (dehumidifiers) Answer ✔✔materials air air evaporation will increase when Answer ✔✔wet materials are made warmer when drier air is used air is moved more rapidly across the wet surface after excess water has been extracted the time needed to dry wet materials is determined by the Answer ✔✔rate of evaporation
80 degrees Answer ✔✔ 80 if a material is not drying well what would be the most effective method of increasing evaporation? Answer ✔✔warm the material one of the most effective methods of drying wet wood under hard surfaces is Answer ✔✔heated airflow. Use of Psychometrics chart to complete the following calculation 80 F at 60% RH 53 F at 80% RH Answer ✔✔91 GPP 48 GPP
- which of the two conditions has the lowest vapor pressure? 53 F at 80% RH = 48 GPP *what is the surface temperature at which condensation would become a risk for air which is 80 F at 60% 102 F (dew point) what is the temperature in degrees F if the humidity ratio is 70 GPP and the relative humidity is 60% Answer ✔✔72 F ____ is the temperature at which air becomes saturated with moisture and can hold no more water vapor Answer ✔✔dew point when air is cooled its capacity for water vapor is reduced, eventually If temperature is cooled enough, the relative humidity will reach ____% or saturation. when this occurs the air has reached its ___ point temperature. Answer ✔✔100%
dew point if surfaces are _____ then the dew point of the surrounding air, water will condense on those surfaces and possibly cause secondary damage. if surfaces are _____ then the dew point of the surrounding air, evaporation can occur. Answer ✔✔cooler warmer ______is the force exerted by a gas (vapor molecules) on the surrounding environment. Answer ✔✔vapor pressure vapor pressure, dew point, and humidity ratio (GPP) are directly related to each other. when one increases the other two _____. when one decreases the other two ______. Answer ✔✔increase decrease water vapor pressure is the force that drives higher convention of humidity from one space to another in an attempt to seek ____ with lower concentration of water vapor. Answer ✔✔equilibrium the ability for water vapor to diffuse through a solid material is expressed as the materials _____ Answer ✔✔permeance drying systems (provide name and brief descriptions of each) Answer ✔✔open: intentional using outdoor air closed: using mechanical dehumidification only combination: using outdoor air combo with mechanical dehumidification open , closed or combination - how to decide? Answer ✔✔is the outside air humidity ratio lower? no : use closed drying yes: is the outside air warmer than 70 F?
class 2 water intrusions involve a _____ amount of water absorption, with more than ___ but less than ___ of are surface being wet porous materials Answer ✔✔significant 5%-40% Class 3 water intrusion involve the ___ amount of water absorption with more than ___% of area surface being wet porous materials. Answer ✔✔greatest 40% wet material present in a class 4 water intrusion require a ___ time to dry. Water has saturated deeply into the materials and is held or trapped as bound water. low evaporation material have ____ absorption of water. Answer ✔✔longer significant restorers must maintain their safety certified equipment properly. this includes, replacing ___ that are damaged, replacing damaged inlet and outlet ___ and checking for ___ electrical plugs. Answer ✔✔cords screens grounded Install _ air mover for each ________ area before you calculate additional air movers for the square feet of surfaces and for room offsets. Answer ✔✔ 1 affected dehumidification reduces the _____ content of the air Answer ✔✔moisture A balanced drying system is achieved when the rate of dehumidification is greater than or equal to the rate of ___________. Answer ✔✔evaporation If the rate of evaporation is allowed to exceed the rate of dehumidification, _________ ______ can occur. Answer ✔✔secondary damage
Refrigerant dehumidifiers remove water from the air through the process of ____ because of this fact, they are more efficient in higher humidity conditions. refrigerants dehumidifiers work best between 70 Degrees and 90 degrees F Answer ✔✔condensation LGRs produce lower ______ than conventional refrigerants and continue to remove significant water vapor down to ___GPP Answer ✔✔vapor pressure 34 GPP Because desiccant dehumidifiers do not use condensation to remove water, they are not limited by low dew point temperatures; therefore, they produce the lowest _____ ________ of any dehumidifier. Answer ✔✔vapor pressure if a structure had affected air at 85 F at 65% RH the most efficient type of dehumidification to use would be a _______ Answer ✔✔refrigerant if a structure had affected air at 75 F at 25% RH the most efficient type of air dehumidifier to use would be ____ Answer ✔✔desiccant if a structure cannnot be warmed to a temperature where LGRs would be effective the most efficient type of dehumidifiers to use would be:____ Answer ✔✔desiccant air filtration device (AFDs) are needed in water restoration work whenever high levels of ____ are being added to the air Answer ✔✔particulates to determine how many dehumidifiers to place : determine the ____ feet (meters) affected or volume of air to be dehumidified by multiplying the area's length x width x height Answer ✔✔cubic note the dehumidifier rating (Association of home appliance manufacturers or AHAM rating) of the refrigerant/LGR dehumidifier being used or the process out CFM of the desiccant dehumidifier being used. Dehumidifiers AHAM ratings are measured in pins of water removed at 80 F, 60% RH for 24 hours. Answer ✔✔
when ceilings are affected, drying procedures are similar to wall drying. if the ceiling is sagging or otherwise damaged, wet drywall is drained, removed, and _____. removal should be done ____drying procedures begin or continue. Answer ✔✔discarded removed inspections are more consistent when the overall goals are kept in mind Answer ✔✔a) determine hoe wet items are
- monitor daily in most circumstances
- use the same meters in the same locations each day b) determine if wet items are drying c)determine if affected items are dry (done) Restorers will know the drying job is dry and done when moisture meters verify that the structure has reached the ______ _____. Answer ✔✔drying goal moisture documentation of restoration work should include each of the following components Answer ✔✔a)record of moisture content (RMC) b) moisture map-a diagram or sketch indicating the boundaries and moisture levels of the affected are. c)record of drying conditions (RDC) or daily humidity record. the wood is considered dry when Answer ✔✔a) solid hardwood is within 2-4 percentage points of normal equilibrium moisture content (dry standard) b) subsurfaces below hardwood are dried to within 2-4 percentage points of the hardwood c) after wood flooring has been dried to acceptable moisture content, appropriate **acclimation time should be allowed before refinishing
the best way to prevent odors and retard microbial growth in a wet structure is to ensure that all materials are dried ______ and ______ Answer ✔✔throughly and rapidly when the presence of mold is suspected it is important to communicate with all parties and use appropriate_____ measures. Answer ✔✔protective as with any contaminant mold should be removed or contained before any air movers are placed in the structure. blowing air can spread mold spores from the ______ area to the _____ rooms Answer ✔✔contaminated , unaffected Dry rot (wood rot) can occur when wood is visibly dry yet wetter than __% moisture content. Answer ✔✔ 20 restorers must use a third party (IEP) in situations that involve severe public health issues, ______ occupants living or working in the structure or extensive _____ contamination that can affect worker or occupant health Answer ✔✔high risk microbial
