Roofing & Materials
Vapor Barrier
A vapor barrier blocks moisture vapor from moving into a roof or wall assembly, and in roofing it is usually a membrane or underlayment layer. Replacing or disturbing it can be its own line item, and whether it is required depends on local code and the assembly, so photograph what was there.
Common questions
What does "Vapor Barrier" mean in Xactimate estimating?
A vapor barrier blocks moisture vapor from moving into a roof or wall assembly, and in roofing it is usually a membrane or underlayment layer. Replacing or disturbing it can be its own line item, and whether it is required depends on local code and the assembly, so photograph what was there.
Where does "Vapor Barrier" show up in a claim?
The term matters on estimates and scopes across the insurance restoration workflow. Browse the glossary for related terms.
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