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Reference

The water damage glossary, in plain English

Every trade hides behind vocabulary. Here’s ours, translated, the terms you’ll hear from our crew, your adjuster, and every estimate you compare.

Updated August 26 2026 · 64 terms · Written by the Highwater field team

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AllWater damage & dryingEquipment on the jobMoldFire & smokeSewage & biohazardInsurance & claimsShowing 64 of 64 terms

Water damage & drying

What the crew is doing, and why.

Mitigation
Stopping the loss from getting worse: extraction, controlled demolition, drying. The emergency phase. Hours matter, and your policy requires you to start it.
Remediation
Correcting contamination, mold or sewage, to safe, verified levels: containment, removal, treatment, clearance testing.
Restoration
The umbrella term, and also the rebuild phase specifically: returning the home to pre-loss condition, or better.
Category 1, 2, 3
The contamination grade of the water: clean (supply line), gray (appliance discharge), black (sewage, ground water). Sets the safety rules and what can be saved.Categories guide →
Class 1–4
How much of the structure is wet and how hard it will fight to dry. Class sets the equipment count and the drying timeline.Classes guide →
Extraction
Physically removing standing water with truck-mounted or portable vacuums before drying begins. The fastest gallons of the whole job.Extraction service →
Structural drying
Drying the building itself, framing, subfloor, drywall, with placed airflow and dehumidification, verified by daily readings.
Dry standard
The documented moisture content a material must reach, matched to dry reference readings elsewhere in the home, before drying is done. A number, not a feeling.
Moisture mapping
A meter and thermal-imaging survey marking exactly what is wet and how much, done before demolition so walls get opened where the water is, not where it’s guessed.
Wicking
Water climbing upward through porous materials like drywall. The reason a one-inch flood becomes a two-foot problem.
Secondary damage
Damage from humidity and time rather than the original water: cupped floors two rooms away, mold behind intact paint, swollen doors.
Flood cut
Removing drywall to a set height above the waterline, often 2 or 4 feet, so wall cavities can dry and be verified.
Cupping & crowning
Hardwood boards curling at the edges (cupping) or bulging in the middle (crowning) as moisture moves through them. Caught early, cupped floors can often be dried flat.
Psychrometrics
The temperature-and-humidity math of drying, readings like GPP (grains of moisture per pound of air). It’s why your drying log shows air data, not just wall data.
Drying chamber
A sealed-off zone built with poly sheeting so equipment dries a small volume fast instead of fighting the whole house.
Spring runoff
Snowmelt-driven ground water that pushes into basements through foundations and window wells, usually as Category 3 ground water.

Utah note

Big Wasatch snow years turn May and June into runoff season, especially along the benches and valley low spots. Ground water is typically excluded without specific coverage; check before spring.

Equipment on the job

The gear in your hallway, decoded.

Air mover
The low, loud fans placed at angles along walls. They push moisture off surfaces into the air so dehumidifiers can grab it. Placement is math, not vibes.
LGR dehumidifier
Low-grain refrigerant dehumidifier, the workhorse that pulls deep moisture out of the air, and the reason the room feels warm while it dries.
Desiccant dehumidifier
Chemical-drying machine for cold spaces and dense materials, hardwood, plaster, concrete, where refrigerant units lose efficiency.
Air scrubber
A HEPA-filtered machine cleaning particles, spores, and odor from the air during work. Runs continuously on contamination jobs.
HEPA
High-efficiency filtration: 99.97% of particles at 0.3 microns. The standard for scrubbers and vacuums on mold and sewage work.
Moisture meter
Pin or pinless instrument reading how wet a material actually is. The difference between “looks dry” and “is dry.”
Thermal imaging camera
Shows temperature differences that reveal wet paths behind walls and ceilings without opening them. A map-maker, not an x-ray.
Cavity / injection drying
Systems that push filtered air inside wall cavities and under floors, drying spaces you’d otherwise have to demolish.
Rescue mats
Vacuum panels laid over hardwood that pull bound water up through the boards, often saving floors that look ruined.
Truck-mount
Vehicle-powered extraction rig with far more suction than any portable or rental. The fastest way to get standing water out.

Mold

The 48-hour problem.

Mold remediation
The controlled process of removing mold: containment, HEPA filtration, removal of affected material, treatment, and verification.Mold remediation service →
Containment / negative air
Poly barriers plus filtered exhaust keeping spores and dust inside the work zone and out of the rest of the house.
Clearance testing
Third-party air or surface sampling after remediation proving spore levels are back to normal. The paper that ends arguments, at resale or with the insurer.
MVOCs
Microbial volatile organic compounds, the gases an active colony releases. That musty smell is MVOCs; odor is evidence.
Spores
Mold’s seeds: microscopic and everywhere. They only matter when moisture gives them a place to grow, which is why fast drying is mold prevention.
Antimicrobial
EPA-registered treatment applied to affected materials on Category 2 and 3 losses. A sanitation step, not a mold cure-all.
Mold cap
A dollar limit many policies put on mold remediation specifically, separate from the underlying water repair.

Utah note

Common on Utah policies, often with the option to buy a higher limit as an endorsement. Look for “fungi, wet rot, dry rot” on your declarations page.

The 48-hour window
The rough time moisture can sit before mold takes hold and clean water degrades a category. The clock behind every “why the hurry?”

Fire & smoke

What burned, and what the smoke did.

Soot
The acidic residue smoke leaves on every surface air reaches. It keeps etching finishes until neutralized, which is why fast treatment saves money.
Smoke webs
Web-like soot chains that form in corners and along ceilings after a fire, often mistaken for pre-existing cobwebs.
Board-up
Emergency securing of windows, doors, and roof openings after a fire. Covered, expected, and part of protecting the claim.
Pack-out
Cataloged removal of belongings for off-site cleaning and storage while the structure is worked on, with a room-by-room inventory for the claim.Contents & pack-out service →
Thermal fogging
Deodorizing fog that penetrates the same pores smoke did, neutralizing odor where it lives instead of perfuming over it.
Ozone / hydroxyl
Machines that chemically break down odor molecules. Ozone works fast but only in empty, sealed spaces; hydroxyl is slower and safe around people.
Odor sealing
Locking treated surfaces behind sealer as a final step. Legitimate after source removal; a cover-up before it.Odor removal service →
Wildfire smoke damage
Smoke intrusion from outdoor fires: residue and odor without flames.

Utah note

Inversion-trapped wildfire smoke reaches homes across the Wasatch Front most summers. Policies generally treat it like any smoke peril; document fast.

Sewage & biohazard

The hazard protocols.

Black water
Category 3: sewage, floor-drain backups, and rising outdoor water. A pathogen hazard from the first minute; never handle it yourself.Sewage cleanup service →
Sewer backup / backflow
Wastewater reversing into the home through drains, usually after a main-line clog or storm surge.

Utah note

Typically NOT covered without a specific rider on Utah policies, and older valley neighborhoods on aging lines need it most. Ask your agent directly.

Backwater valve
A one-way valve on your sewer line that physically blocks a backup. Cheap insurance for any basement with a floor drain.
PPE
Personal protective equipment: suits, respirators, gloves. When you see the crew in it, that’s the water’s category talking, not theater.
Regulated waste disposal
Contaminated material leaves as documented, manifested waste through licensed carriers, not in the neighborhood dumpster.
Cross-contamination
Spreading contamination to clean areas, usually by walking through it or running the HVAC. The reason we contain first and ask you to stay out.

Insurance & claims

The words on your policy and your estimate.

Deductible
Your share of a covered loss, set by your policy. On most water jobs we bill the insurer directly and your deductible is your only check.
Adjuster
The insurer’s representative who inspects and values the loss. Staff adjusters are employees; independent adjusters are contractors working for the carrier.Working with your adjuster →
Public adjuster
A licensed professional you hire to run the claim on your side, typically for 10–25% of the payout. Earns it on large, contested losses.How we work with PAs →
Xactimate
The estimating platform insurers price from. A scope written in Xactimate line items is one your adjuster can approve without translation.
Scope of loss
The itemized list of damage and the work to fix it. The document every claim negotiation is actually about.
Supplement
A documented addition to the scope when repairs reveal damage the estimate missed. Normal, common, and paperwork-driven.Supplements, explained →
ACV vs. RCV
Actual cash value pays today’s depreciated worth; replacement cost value pays what replacement costs. Same couch, very different checks.
Recoverable depreciation
The holdback an RCV policy releases after you prove replacement with receipts. Families who never file for it simply forfeit it.
ALE / loss of use
Additional living expenses: the hotel, the extra you spend eating out, and mileage while the home is uninhabitable during covered repairs.The ALE guide →
Duty to mitigate
Your contractual obligation to prevent further damage after a loss. Waiting for the adjuster before drying is how coverage shrinks.
Exclusion
A peril the policy names and refuses: commonly ground water, seepage, and long-term leaks. The reason “water damage is covered” is never a complete sentence.
Endorsement / rider
Optional add-on coverage bought separately: sewer backup, higher mold limits, sump failure.

Utah note

Utah basements make sewer-backup and sump-failure riders two of the highest-value lines on the whole policy, and both are usually cheap. Ask what each costs.

Proof of loss
The sworn, signed statement of your claim, often with a hard deadline. Late or sloppy filings sink otherwise good claims.
Vacancy clause
Policy language reducing or voiding coverage when a home sits empty past a threshold, often 30–60 days.

Utah note

The clause that matters most for Park City and Wasatch Back second homes. Weekly documented checks are what insurers want to see.

Vacant-home guide →
Subrogation
Your insurer chasing whoever caused the loss, a manufacturer, a contractor, to recover what it paid, sometimes including your deductible.
Appraisal clause
The built-in process for disputes about amount: each side hires an appraiser and an umpire breaks ties. For “how much,” not “whether.”

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FAQ

Related questions

Do I need to know these terms to file a claim?
No, that’s our job. But adjusters and estimates use them constantly, and homeowners who recognize scope, supplement, and dry standard catch mistakes everyone else misses.
What’s the difference between mitigation and restoration?
Mitigation stops the damage: extract, dry, stabilize. Restoration rebuilds what was lost. Insurers treat them as separate phases, which is why they may arrive as separate approvals and separate checks.
Why does my estimate use Xactimate codes?
Because your insurer prices from the same database. Matching formats means the scope gets approved line by line instead of argued line by line.
What does “verified dry” actually mean?
Materials measured at or below the dry standard, the moisture level of matching unaffected materials, and logged daily. It’s the reading that lets everyone stop guessing.
Which of these terms matter most on a Utah policy?
The endorsements: sewer backup, sump failure, and the mold cap. Utah basements make those three the highest-value lines on the declarations page, and none of them is standard.
A term you didn’t define is on my estimate. Now what?
Call and read it to us. A real person will translate it at no charge, whether or not we’re your contractor, and we’ll add it to this page.
Keep reading

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GuideCategories 1, 2, 3 explainedServiceWater damage restoration, the master pageGuideThe complete Utah claims guide
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