TL;DR
The class of water loss is the IICRC S500 rating, from 1 to 4, that describes how much evaporation a flooded space will demand based on how much wet, porous material is present. Class 1 means minimal absorption, Class 4 means water bound deep in dense materials like hardwood, plaster, or concrete.
What it means
The class of water loss is the IICRC S500 rating, from 1 to 4, that describes how much evaporation a flooded space will demand based on how much wet, porous material is present. Class 1 means minimal absorption, Class 4 means water bound deep in dense materials like hardwood, plaster, or concrete. Restorers use the class, together with the contamination category, to calculate how many air movers and dehumidifiers a job needs, which drives the daily equipment charges on the bill.
Where it sits in the glossary
Class of water loss is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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