Class III vapor barriers have a medium amount of permeability but still offer a moderate amount of protection. This class ...

Homeowners often ask if a vapor barrier is necessary for optimizing attic insulation and protecting their homes from moisture-related damage. The answer, however, isn’t one-size-fits-all.

It has ingredients like ceramides to support the skin, panthenol to reinforce the barrier and prevent water loss and glycerin to add moisture to the skin, according to the brand. This combination ...