What is the difference between Stego Wrap and the vapor retarders that I have been specifying?
Older generation vapor retarders/barriers fall into four categories...Older generation vapor retarders/barriers fall into four categories.
1. Cross-laminations of very thin mils of polyethylene
2. Laminations of alternating layers thin polyethylene and scrim
3. Thin polyethylene with fabric laminated to one side
4. Laminations of thin polyethylene, scrim and brown paper
Stego Wrap is a "new generation" product extruded from prime virgin resins and additives on a first melt basis. Stego Industries does not use low-grade resins, recycled or reground materials, cross-lamination, layers of scrim or fabric backing. Virgin plastic molecules in Stego Wrap "cross-link" to provide a homogenous membrane with the same permeance and puncture resistance throughout the web of the film.