Water Management of the Building Envelope
Roofing
Underlayments
What is it used for or what does
it do?
Vapor retarder membrane used for
above grade work such as
wall, beneath wood flooring and
roof assemblies.á Sealed membrane joints
mean moisture movement through a
wall or roof assembly is
minimized.á Excellent membrane for moisture retardation.
Where is it used?
Roof underlayment.
Vapor retarder for above grade work,
such as wall and roof
assemblies
What is it made of?
Multi-layer, virgin low-density polyethylene,
incorporating a multi-filament
reinforced scrim and aluminum.
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Extremely
Low-Perm Underlayment
End
Index