TL;DR
Grains per pound is the unit restoration technicians use to express absolute humidity, the actual weight of water vapor held in a pound of air, with 7,000 grains equaling one pound of water. Unlike relative humidity it does not swing with temperature, so daily GPP readings inside a drying chamber versus outside air and dehumidifier exhaust prove whether structural drying is progressing.
What it means
Grains per pound is the unit restoration technicians use to express absolute humidity, the actual weight of water vapor held in a pound of air, with 7,000 grains equaling one pound of water. Unlike relative humidity it does not swing with temperature, so daily GPP readings inside a drying chamber versus outside air and dehumidifier exhaust prove whether structural drying is progressing. Insurance documentation for water losses typically includes these psychrometric logs to justify equipment days on the invoice.
Where it sits in the glossary
Grains per pound 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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