TL;DR
An R-value certificate is the signed document an insulation installer must leave under the FTC's R-value Rule, stating the coverage area, product type, thickness, and the installed thermal resistance achieved. For blown attic insulation it also records initial installed thickness and bag count, since loose fill settles and the bag-label chart ties bags used to the rating claimed.
What it means
An R-value certificate is the signed document an insulation installer must leave under the FTC's R-value Rule, stating the coverage area, product type, thickness, and the installed thermal resistance achieved. For blown attic insulation it also records initial installed thickness and bag count, since loose fill settles and the bag-label chart ties bags used to the rating claimed. Building inspectors and energy-code raters ask for it at final, and it protects the homeowner if coverage falls short.
Where it sits in the glossary
R-value certificate is part of the Certifications 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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