Restoration Glossary

This glossary covers the most common terms you will encounter during the property damage restoration process. Understanding these terms helps you communicate effectively with your restoration company, insurance adjuster, and contractors. Terms are organized alphabetically for quick reference.

A

Abatement

The process of removing or containing hazardous materials such as asbestos, lead paint, or mold from a building. Abatement must be performed by licensed contractors following EPA and state regulations.

Absorption

The process by which a material takes in and retains a liquid. Porous building materials like drywall, carpet, and wood absorb water quickly, making prompt extraction critical.

Accelerant

A substance used to initiate or increase the spread of fire. Fire investigators test for accelerants to determine the cause and origin of a fire.

Actual Cash Value (ACV)

An insurance valuation method that calculates the replacement cost of damaged property minus depreciation. ACV settlements are lower than Replacement Cost Value (RCV) settlements.

Additional Living Expenses (ALE)

Insurance coverage that pays for temporary housing, meals, and other living costs when a policyholder is displaced from their home due to a covered loss. Also called Loss of Use coverage.

Adjuster

An insurance professional who inspects property damage, determines the cause, evaluates the scope, and estimates the cost of repair. See also: Staff Adjuster, Independent Adjuster, Public Adjuster.

Aerobic Bacteria

Microorganisms that require oxygen to survive. Aerobic bacteria are present in Category 2 and Category 3 water and contribute to the deterioration of building materials.

Air Mover

A high-velocity fan used in water damage restoration to increase airflow across wet surfaces, accelerating evaporation. Professional air movers are rated by CFM (cubic feet per minute).

Air Scrubber

A portable HEPA filtration device that removes airborne contaminants including mold spores, dust, and volatile organic compounds (VOCs) from indoor air during restoration.

Antimicrobial

A chemical agent applied to building materials and surfaces to inhibit the growth of mold, bacteria, and other microorganisms. Applied during water damage restoration and mold remediation.

Asbestos

A naturally occurring mineral fiber used in building materials before 1980 for insulation and fire resistance. When disturbed, asbestos fibers become airborne and pose serious health risks including mesothelioma.

Assignment of Benefits (AOB)

A legal agreement that transfers insurance policy benefits from the policyholder to a third party (such as a restoration company). Florida eliminated AOB for property insurance claims in 2022 (SB 2A).

B

Backflow

The reverse flow of water or sewage through a plumbing system, often caused by pressure changes. Backflow preventers are required by building code to protect potable water supplies.

Bacteria

Single-celled microorganisms present in contaminated water. Category 2 and Category 3 water contain harmful bacteria that require antimicrobial treatment during restoration.

Biohazard

Any biological material that poses a threat to human health, including blood, bodily fluids, sewage, and certain mold species. Biohazard cleanup requires specialized training and PPE.

Black Water

IICRC Category 3 water that is grossly contaminated and contains pathogenic agents. Sources include sewage backups, rising floodwater, and toilet overflows with feces. All contacted porous materials must be removed.

Board-Up

The process of securing a damaged building by covering broken windows, doors, and other openings with plywood. Board-up prevents further damage from weather, vandalism, and unauthorized entry.

Building Code

Legal requirements established by local, state, or federal government that set minimum standards for building design, construction, and maintenance. Florida Building Code is updated every three years.

Building Envelope

The physical barrier between the interior and exterior of a building, including walls, roof, foundation, windows, and doors. Maintaining the building envelope prevents water intrusion and energy loss.

Business Income Coverage

Commercial insurance that replaces lost revenue and covers continuing expenses (rent, payroll, utilities) when a business cannot operate due to covered property damage.

Business Interruption

The period during which a business cannot operate normally due to property damage. Business Interruption insurance covers financial losses during this period.

C

Category 1 Water

IICRC classification for clean water that originates from a sanitary source and poses no substantial health risk. Sources include broken supply lines, faucet leaks, and appliance malfunctions. Category 1 can degrade to Category 2 or 3 if left untreated.

Category 2 Water

IICRC classification for gray water that contains significant contamination and can cause illness. Sources include washing machine discharge, dishwasher overflow, toilet overflow with urine, and AC condensate overflow.

Category 3 Water

IICRC classification for black water that is grossly contaminated with pathogenic agents. Sources include sewage backups, rising floodwater, and any standing water that has remained long enough to support microbial growth.

Cause and Origin

A fire investigation process that determines where a fire started (origin) and what ignited it (cause). Cause and origin reports are critical for insurance claims and legal proceedings.

CFM (Cubic Feet per Minute)

A measurement of air volume moved by fans, air movers, and HVAC systems. Higher CFM ratings indicate greater airflow capacity for drying.

Chain of Custody

The documented trail of evidence handling from collection through analysis. In restoration, chain of custody applies to mold samples, asbestos samples, and fire investigation evidence.

Charring

The blackening of wood or other organic materials caused by exposure to fire or extreme heat. The depth and pattern of charring helps investigators determine fire origin and intensity.

Citizens Property Insurance

Florida’s state-created insurer of last resort that provides property insurance to homeowners and businesses unable to find coverage in the private market.

Class 1 Water Loss

IICRC classification for water damage with the slowest evaporation rate. Only a small area is affected with minimal moisture absorption. Example: a single room with wet carpet but dry walls.

Class 2 Water Loss

IICRC classification for water damage with a fast evaporation rate. An entire room is affected with moisture wicking up walls at least 12 inches high.

Class 3 Water Loss

IICRC classification for the fastest evaporation rate. Water has come from overhead, saturating walls, ceilings, insulation, carpet, cushion, and subfloor.

Class 4 Water Loss

IICRC classification for specialty drying situations involving deeply bound water in materials like hardwood, plaster, concrete, or stone. Requires low-humidity, low-volume drying techniques.

Clean Water

See Category 1 Water.

Clearance Testing

Post-remediation air and surface sampling performed by an independent assessor to verify that mold remediation was successful and airborne spore counts have returned to acceptable levels.

Condensation

The process by which water vapor in the air converts to liquid when it contacts a surface cooler than the dew point. Condensation on windows, pipes, and cold surfaces is a common moisture source.

Containment

The isolation of a contaminated area using polyethylene sheeting, negative air pressure, and HEPA filtration to prevent the spread of mold spores, asbestos fibers, or other contaminants during remediation.

Contents Cleaning

The professional cleaning and restoration of personal belongings, furniture, electronics, clothing, and other items damaged by water, fire, smoke, or mold.

Contents Pack-Out

The process of inventorying, carefully packing, and transporting damaged contents to an off-site facility for professional cleaning and storage during property restoration.

Corrosion

The gradual deterioration of metal surfaces caused by chemical reactions with moisture, acids, or salts. Smoke residue is acidic and causes rapid corrosion of metals if not cleaned promptly.

Cross-Contamination

The spread of contaminants (mold spores, soot, bacteria) from an affected area to unaffected areas. Proper containment prevents cross-contamination during restoration.

D

Deductible

The amount a policyholder must pay out of pocket before insurance coverage begins. Florida hurricane deductibles are typically 2–10% of the dwelling coverage amount.

Dehumidifier

A device that removes moisture from the air. Professional LGR (Low Grain Refrigerant) dehumidifiers used in restoration are significantly more powerful than consumer models and can remove 15–30+ gallons per day.

Demolition

The controlled removal of damaged building materials (drywall, flooring, insulation, cabinetry) during restoration. Also called “demo” or “tear-out.”

Desiccant Dehumidifier

A dehumidifier that uses a chemical desiccant material to absorb moisture from the air. Effective in low-temperature environments where refrigerant dehumidifiers lose efficiency.

Dew Point

The temperature at which air becomes saturated and water vapor condenses into liquid. Understanding dew point is critical for preventing condensation during structural drying.

Direct Repair Program (DRP)

An agreement between a restoration company and an insurance carrier where the contractor is pre-approved to perform work for the carrier’s policyholders. Also called Preferred Vendor or Program Work.

Direction to Pay

An authorization from a policyholder directing their insurance company to pay the restoration contractor directly. Replaced Assignment of Benefits (AOB) in Florida after 2022 legislation.

Dry Standard

The target moisture level that building materials must reach before they are considered dry. Typically determined by comparing to unaffected materials in the same structure.

Drying Chamber

An enclosed space created using containment materials where targeted drying equipment (dehumidifiers and air movers) operates to dry specific areas more efficiently.

Drying Goal

The specific moisture content target for each material type during structural drying, based on IICRC S500 standards and comparison to unaffected reference materials.

Duct Cleaning

The cleaning of HVAC ductwork to remove dust, debris, mold, soot, and other contaminants. Recommended after fire, mold, or significant water damage to prevent recirculation of contaminants.

E

Efflorescence

White crystalline deposits that form on concrete and masonry surfaces when water evaporates and leaves behind mineral salts. Often mistaken for mold but is not a biological growth.

Emergency Mitigation

Immediate actions taken to prevent further property damage, including water extraction, board-up, tarping, and temporary power. Insurance policies require policyholders to mitigate further damage promptly.

Encapsulation

The process of sealing a surface with a specialized coating to contain hazardous materials (asbestos, lead paint, or mold) rather than removing them. Used when removal is impractical or cost-prohibitive.

Environmental Testing

Laboratory analysis of air, surface, or bulk samples to identify the presence and concentration of contaminants such as mold, asbestos, lead, or volatile organic compounds.

Equilibrium Moisture Content (EMC)

The moisture level at which a material neither gains nor loses moisture to the surrounding air. Building materials should return to EMC after drying.

Estimate

A detailed cost projection for restoration work. Professional estimates in the restoration industry are typically written using Xactimate software to align with insurance industry standards.

Evaporation

The process by which liquid water converts to water vapor. Increasing airflow and temperature while decreasing humidity accelerates evaporation during structural drying.

Extra Expense Coverage

Commercial insurance that covers additional costs a business incurs to continue operations during restoration, such as temporary facility rental, equipment rental, and overtime labor.

F

FEMA (Federal Emergency Management Agency)

The federal agency responsible for coordinating disaster response, recovery, and mitigation. FEMA provides individual and public assistance after presidential disaster declarations.

Fire Load

The total amount of combustible material present in a building or space, measured in BTUs per square foot. Higher fire loads increase fire severity and restoration complexity.

Flood Zone

A geographic area designated by FEMA based on flood risk levels. Flood zone designations (A, AE, V, VE, X) determine insurance requirements and building code provisions.

Floodplain

Low-lying land adjacent to a body of water that is subject to periodic flooding. Development in floodplains is regulated by local, state, and federal requirements.

Fogging

The application of deodorizing or antimicrobial agents as a fine mist or fog. Thermal fogging uses heat to create a penetrating deodorant fog that follows the same pathways smoke traveled.

Freeze Drying

A document restoration technique that removes moisture from water-damaged documents by freezing them and then reducing pressure to allow ice to sublimate directly to vapor.

Fungi

A kingdom of organisms that includes mold, mildew, mushrooms, and yeasts. Fungi reproduce through spores and require moisture and organic material to grow.

G

General Contractor (GC)

A licensed contractor responsible for overseeing construction or reconstruction projects, including hiring and coordinating subcontractors. In Florida, a GC license is required for projects exceeding $1,000.

GPP (Grains Per Pound)

A measurement of moisture content in air. LGR dehumidifiers are rated by their ability to remove moisture at specific GPP levels.

Grain Depression

The difference between the moisture content of air entering a dehumidifier and the air exiting it, measured in grains per pound. Higher grain depression indicates more effective dehumidification.

Gray Water

See Category 2 Water.

Gypsum Board

See Drywall. A common interior wall and ceiling material made of gypsum plaster pressed between paper facings. Highly susceptible to water damage and mold growth on the paper facing.

H

Hazardous Material (Hazmat)

Any substance that poses a risk to health, safety, or the environment, including asbestos, lead, mold, sewage, chemicals, and biological waste.

HEPA (High Efficiency Particulate Air)

A filtration standard that captures 99.97% of particles 0.3 microns or larger. HEPA filters are used in air scrubbers, vacuums, and respirators during mold remediation and fire restoration.

Hurricane Deductible

A separate deductible in Florida property insurance policies that applies specifically to hurricane damage, typically expressed as a percentage (2–10%) of the dwelling coverage amount.

Humidity

The amount of water vapor present in the air. Relative Humidity (RH) measures the current moisture as a percentage of the maximum the air can hold at that temperature.

HVAC

Heating, Ventilation, and Air Conditioning. HVAC systems can spread contaminants (mold spores, soot, smoke) throughout a building if not properly addressed during restoration.

Hydroxyl Generator

A device that produces hydroxyl radicals to break down odor-causing molecules and organic compounds. Safe for use in occupied spaces, unlike ozone generators.

Hygrometer

An instrument that measures the relative humidity of the air. Used throughout the drying process to monitor environmental conditions and verify drying progress.

Hygroscopic

The tendency of a material to absorb moisture from the surrounding air. Hygroscopic materials like wood and drywall continue to absorb moisture in humid environments even without direct water contact.

I

ICRA (Infection Control Risk Assessment)

A protocol used in healthcare facility construction and restoration to assess and mitigate infection risks to patients and staff. Required for restoration work in hospitals, surgery centers, and other healthcare settings.

IICRC (Institute of Inspection, Cleaning and Restoration Certification)

The non-profit organization that establishes standards and certifications for the cleaning and restoration industry. Key standards include S500 (water), S520 (mold), and S540 (trauma/crime scene).

Independent Adjuster

An insurance claims adjuster who works as a contractor for insurance companies rather than as an employee. Commonly used during catastrophic events when staff adjusters are overwhelmed.

Injectidry

A specialty drying system that forces warm, dry air into wall cavities, behind cabinets, and under floors through small injection ports. Used for drying areas that air movers cannot reach directly.

Insurable Interest

A legal requirement that the policyholder must have a financial stake in the insured property. Without insurable interest, an insurance claim cannot be filed.

Interstitial Space

The concealed spaces within building construction, including wall cavities, ceiling plenums, and floor systems. Water and mold often hide in interstitial spaces.

J

Job File

The complete documentation package for a restoration project, including photos, moisture readings, drying logs, estimates, contracts, and correspondence.

Joists

Horizontal structural members that support floors and ceilings. Water damage to joists can compromise structural integrity and requires professional assessment.

K

Kick-Out Flashing

A type of roof flashing that diverts water away from the intersection of a roof and wall. Missing or damaged kick-out flashing is a common cause of hidden water damage in walls.

L

Large Loss

A restoration project that exceeds typical scope and complexity, generally defined as projects exceeding $500,000. Large losses require expanded equipment, staffing, project management, and logistics.

Lead Paint

Paint containing lead, commonly found in buildings constructed before 1978. Lead paint abatement during restoration must follow EPA RRP (Renovation, Repair, and Painting) Rule requirements.

Leak Detection

The process of identifying the source of hidden water leaks using thermal imaging, moisture meters, acoustic equipment, and other technology. Early leak detection prevents extensive water damage.

LGR Dehumidifier

Low Grain Refrigerant dehumidifier — a high-performance commercial dehumidifier designed to operate effectively at lower humidity levels than conventional refrigerant dehumidifiers.

Loss Assessor

A professional hired by the policyholder to assess property damage and negotiate with the insurance company. Similar to a Public Adjuster.

Loss of Use

Insurance coverage that pays for additional living expenses when a policyholder is displaced from their home. Covers hotel stays, meals, transportation, and other temporary costs.

M

Matterport

A 3D capture technology that creates immersive digital twins of physical spaces. Used in restoration for pre-loss documentation, damage assessment, and insurance claims support.

Microbial Growth

The development of mold, bacteria, or other microorganisms on building materials. Microbial growth typically begins within 24–48 hours of water exposure in warm environments.

Mitigation

Actions taken to prevent or reduce further property damage after an initial loss event. Mitigation includes water extraction, board-up, tarping, and emergency repairs.

Moisture Barrier

A material (typically polyethylene sheeting) installed to prevent moisture migration through building assemblies. Proper moisture barrier installation prevents condensation and mold in walls and floors.

Moisture Content (MC)

The amount of water present in a material, expressed as a percentage of the material’s dry weight. Measured with pin-type or pinless moisture meters during drying.

Moisture Mapping

A systematic documentation of moisture readings throughout a structure, plotted on a floor plan to show the extent and severity of water damage. Critical for insurance claims and drying plans.

Moisture Meter

An instrument used to measure the moisture content of building materials. Pin-type meters measure moisture between two probes; pinless meters use electromagnetic signals to detect moisture non-invasively.

Mold

A type of fungus that grows in multicellular filaments called hyphae. Mold requires moisture, warmth, and organic material to grow and reproduces through airborne spores.

Mold Assessment

A professional inspection that includes visual examination, moisture measurement, and laboratory sampling to determine the presence, extent, and type of mold contamination. In Florida, mold assessments must be performed by a licensed mold assessor.

Mold Remediation

The process of removing mold contamination from a building, including containment, HEPA filtration, removal of affected materials, antimicrobial treatment, and clearance testing.

Mycotoxin

A toxic compound produced by certain mold species (particularly Stachybotrys and Aspergillus). Mycotoxin exposure can cause serious health effects including respiratory illness and neurological symptoms.

N

Negative Air Pressure

A containment technique where air is exhausted from a sealed work area faster than it enters, creating lower pressure inside the containment zone. This prevents contaminants from escaping.

NFIP (National Flood Insurance Program)

A federal program administered by FEMA that provides flood insurance to property owners in participating communities. Standard homeowner policies do not cover flood damage.

O

Odor Counteractant

A chemical compound that neutralizes odor molecules rather than masking them. Used in fire and smoke restoration to permanently eliminate odors.

Ordinance or Law Coverage

Insurance coverage that pays the additional cost of bringing a damaged building up to current building code during reconstruction. Critical in Florida where code requirements change frequently.

OSHA (Occupational Safety and Health Administration)

The federal agency that sets and enforces workplace safety standards. Restoration contractors must comply with OSHA regulations for PPE, confined space, fall protection, and hazardous material handling.

Ozone Generator

A device that produces ozone (O3) to oxidize and destroy odor-causing compounds. Effective for severe smoke odor but toxic to humans — spaces must be unoccupied during treatment.

P

Pack-Out

See Contents Pack-Out.

Pathogen

A microorganism (bacteria, virus, or fungus) that causes disease. Category 3 water contains pathogens and requires specialized cleaning and PPE.

Peril

An event or circumstance that causes property damage, such as fire, windstorm, hail, water damage, or theft. Insurance policies specify which perils are covered.

Personal Protective Equipment (PPE)

Safety equipment worn by restoration technicians including respirators, gloves, protective suits, eye protection, and boot covers. PPE requirements vary by hazard type and contamination level.

Photo Documentation

Photographs taken throughout the restoration process to record damage conditions, work performed, and completed restoration. Photo documentation supports insurance claims and quality assurance.

Polyethylene Sheeting

Plastic sheeting (typically 6-mil thickness) used for containment barriers, moisture barriers, and surface protection during restoration. Also called “poly.”

Porous Material

A material with openings or gaps that allow liquid or air to pass through. Drywall, carpet, insulation, and wood are porous materials that absorb water and support mold growth.

Pre-Loss Condition

The state of a property immediately before a damage event occurred. The goal of restoration is to return the property to pre-loss condition.

Proof of Loss

A sworn statement submitted to an insurance company detailing the damage, cause, and claimed amount. Some Florida policies require a formal proof of loss within a specified time period.

Psychrometry

The science of measuring and understanding the properties of air-water vapor mixtures. Essential knowledge for professional drying, including humidity, temperature, dew point, and evaporation rate.

Public Adjuster

A licensed insurance professional hired by the policyholder (not the insurance company) to inspect damage, prepare estimates, and negotiate settlements. Public adjusters typically charge 10–20% of the settlement.

R

Reconstruction

The rebuilding phase of restoration that restores a property to pre-loss condition or better. Includes framing, drywall, flooring, painting, cabinetry, and finish work.

Relative Humidity (RH)

The percentage of moisture in the air relative to the maximum amount the air can hold at that temperature. Indoor RH should be maintained between 30–60% to prevent mold growth.

Remediation

The process of correcting or removing a contamination or environmental hazard. In restoration, remediation most commonly refers to mold remediation.

Replacement Cost Value (RCV)

An insurance valuation method that pays to replace damaged property with new items of similar kind and quality, without deducting for depreciation. RCV policies provide higher settlements than ACV policies.

Restoration

The process of returning a property to its pre-loss condition after damage from water, fire, mold, storms, or other perils. Includes mitigation, cleaning, and reconstruction phases.

Ripple Effect

Secondary damage that results from the initial loss event. Example: water damage leads to mold growth, which leads to additional demolition and remediation costs.

S

Salvageable

Items or materials that can be cleaned, restored, and returned to pre-loss condition. Professional assessment determines salvageability based on contamination level and material type.

Scope of Work

A detailed description of all restoration tasks required for a project, including materials, labor, equipment, and timeline. The scope forms the basis for the estimate and insurance claim.

Soot

Fine black particles produced by the incomplete combustion of organic materials during a fire. Soot is acidic and causes progressive damage to metals, fabrics, and finishes if not cleaned promptly.

Spore

The reproductive unit of fungi (mold). Spores are microscopic, airborne, and virtually impossible to eliminate from indoor environments. Mold prevention focuses on controlling moisture rather than eliminating spores.

Stachybotrys

A genus of mold commonly called “black mold” or “toxic mold.” Stachybotrys chartarum produces mycotoxins and requires sustained moisture to grow, typically on chronically wet drywall or cellulose materials.

Staff Adjuster

An insurance claims adjuster who is a direct employee of the insurance company, as opposed to an independent adjuster or public adjuster.

Storm Surge

An abnormal rise in water level caused by a storm’s winds pushing ocean water onshore. Storm surge is the most destructive aspect of hurricanes for coastal communities.

Structural Drying

The professional process of removing moisture from building materials using commercial dehumidifiers, air movers, and monitoring equipment until materials reach dry standard.

Subrogation

The process by which an insurance company seeks reimbursement from a responsible third party after paying a claim. Example: your insurer pays for water damage, then seeks recovery from the negligent plumber.

Sublimit

A coverage limit within an insurance policy that caps payment for a specific type of loss. Florida policies often have mold sublimits of $10,000–$50,000.

Supplement

Additional line items added to an insurance estimate after hidden damage is discovered during restoration. Supplements are common when demolition reveals damage behind walls or under floors.

T

Tarping

The installation of heavy-duty tarps over damaged roofing to prevent water intrusion. Emergency tarping is typically one of the first mitigation steps after storm or fire damage.

Thermal Fogging

An odor elimination technique that uses heat to disperse a deodorizing agent as a dense fog. The fog penetrates into the same cracks, crevices, and porous materials that smoke penetrated.

Thermal Imaging

The use of infrared cameras to detect temperature differences in building materials, revealing hidden moisture, missing insulation, electrical hotspots, and other conditions invisible to the naked eye.

Tree Trimming

The removal of dead, damaged, or overgrown branches to reduce the risk of debris damage during storms. Part of hurricane preparedness and property maintenance.

U

Underlayment

A layer of material between the structural deck and finished roofing or flooring. Water-damaged underlayment often requires replacement even when the finished surface appears intact.

Unsanitary Water

See Category 2 Water and Category 3 Water. Water that contains contaminants posing health risks.

V

Vapor Barrier

See Moisture Barrier. A material that resists the passage of water vapor through building assemblies.

Ventilation

The exchange of indoor and outdoor air. Proper ventilation reduces indoor humidity and prevents moisture accumulation that leads to mold growth.

Volatile Organic Compounds (VOCs)

Chemicals that easily evaporate at room temperature and can cause health effects. VOCs are released by smoke, cleaning products, building materials, and certain mold species.

W

Water Extraction

The removal of standing water from a structure using truck-mounted extractors, portable pumps, and weighted extraction tools. The first step in professional water damage restoration.

Water Intrusion

The entry of water into a building through any means — roof leaks, window failures, foundation cracks, plumbing failures, or storm surge.

Water Mitigation

Emergency actions taken to prevent further water damage, including extraction, drying, and antimicrobial treatment. Water mitigation precedes reconstruction.

Weep Holes

Small openings at the base of exterior walls that allow moisture to drain from behind the wall system. Blocked weep holes can cause hidden water damage and mold.

Wind Deductible

See Hurricane Deductible. A separate deductible in Florida policies for wind damage, typically expressed as a percentage of dwelling coverage.

WRT (Water Restoration Technician)

An IICRC certification for technicians trained in water damage restoration principles, including extraction, drying science, psychrometry, and documentation.

X

Xactimate

The industry-standard estimating software used by insurance companies and restoration contractors to create line-item cost estimates for property damage repairs. Xactimate uses localized pricing databases updated monthly.