
SANCTUARY
An eco-friendly cellulose insulation product that delivers unparalleled sound power reduction, highly effective insulation, temperature regulation and fire safety.


Greenfiber® insulation has the ability to completely surround irregular framing and gaps found in most attics. This provides consistent thermal performance and reduces air leakage in ceiling applications.
Access all the technical details, building code support and installation know-how you need to insulate with confidence — and meet today’s building standards with ease.


Our team of insulation experts is ready to help with product info, project advice or anything else you need to get the job done right.

