Frequently Asked Questions

Knowing the minimum code requirements that govern the design and construction of your upcoming crawl space encapsulation project is a great place to begin so that you can make sure your work is in compliance.  Once you know these minimum requirements, and bearing in mind that they are only minimums, you can then determine where you may wish to exceed them for the betterment of your project.

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Stego Wrap is our line of high-performance, below-slab vapor retarders/barriers. Our products help protect the building envelope from below-slab moisture vapor, soil gases, and other contaminants.

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According to industry experts, a vapor barrier is defined as having a permeance of 0.01...

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Visqueen/generic plastic is often made from low grade resins and recycled materials. Besides lacking the protective qualities that many industry experts recommend (low permeance, longevity, and durability), most generic plastic films do not comply with ASTM E 1745 and are...

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Virtually zero water vapor transmission rate and high puncture resistance.

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The top 5

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Independent testing proves by an independent source, which products conform to the testing criteria established by a testing society, usually ASTM International, formerly the American Society for Testing and Materials . Stego Industries believes very strongly in independent testing. Words...

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The industry standard for plastic vapor retarders used under concrete slabs.

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"Standard Practice for Selection, Design, Installation, and Inspection of Water Vapor Retarders Used in Contact with Earth or Granular Fill Under Concrete Slabs."

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Moisture vapor and soil gases are driven into the building envelope by diffusion. If you don't take the ground out of play with an effective below-slab vapor barrier, then moisture, gases, and contaminants will move into your building envelope and...

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Regardless of the climate, water vapor is constantly evaporating off the water table below ground creating a100% RH environment below the slab. 100% RH under the slab and a conditioned space in the building, creates the exact same moisture diffusion...

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