DryRight Fiber Glass Insulation helps building professionals control moisture
within wall cavities. The product is fiberglass insulation faced with MemBrain,
the company’s patented vapor retarder that changes its molecular permeability
under varying humidity conditions to allow wall cavities to stay dry and help
reduce the risk of damaging mold and mildew. Specifically, the permeance of the
insulation is 1 perm or less at normal conditions and increases to greater than
30 perms when the humidity changes to near 90 percent. This process allows
closed building envelope systems to increase their drying potential with
seasonal climatic changes.
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