National Gypsum Company
2001 Rexford Road
Charlotte, NC 28211
Phone: (800) 628-4662

Technical Information: 1-800-NATIONAL (1-800-628-4662)
Technical Fax Line: 1-800-FAXNGC1 (1-800-329-6421)

e2XP Extended Exposure Sheathing

e2XP Sheathing is a moisture and mold resistant gypsum panel designed for attachment to the outside of sidewall and soffit framing as a water resistant underlayment for various exterior materials. e2XP Sheathing is manufactured with an enhanced moisture and mold resistant core and facer. The facer is composed of a coated fiberglass mat which provides superior weather resistance capabilities. It is produced in 1/2" and 5/8" thicknesses, 4' wide in 8', 9' and 10' lengths. e2XP Sheathing is lightweight, scores and cuts easily, and is specially coated on the front, back and sides for easy handling.

 




Applications

e2XP Sheathing can be used in both wood and metal stud construction to provide fire resistance, weather protection and to add to structural strength. e2XP Sheathing can be used as a substrate for various air and water resistive barriers including building wraps, self-adhesive membranes and liquid applied coatings. It can be used as a component in curtainwall or Exterior Insulated Finish Systems (EIFS), and under various exterior finishes such as metal, vinyl, wood or fiber-cement siding; brick/stone veneer, or conventional stucco. The 5/8" e2XP Fire-Shield® Type X gypsum panel can be utilized for exterior fire-rated wall and soffit assemblies.


Features & Benefits
  • Manufactured to meet ASTM C 1177 (“Standard Specification for Glass Mat Gypsum Substrate for Use as Sheathing”).
  • Will withstand up to 12 months of exposure to typical weather conditions, subject to terms, conditions and exclusions of National Gypsum’s Limited Warranties. (Go to www.nationalgypsum.com/resources/other/e2xpwarranty.pdf to view e2XP Sheathing Warranty for terms, conditions and limitations.)
  • Treated fiberglass face, back and gypsum core provides extra protection against mold growth per ASTM D3273.*
  • Superior water resistance which does not impede vapor transmission.
  • Dimensionally stable under changes in temperature and relative humidity and resists warping, rippling, buckling and sagging for a flat and even substrate.
  • Noncombustible material.
  • Approved for inclusion in specific UL fire-rated designs.
  • Can be scored and snapped to exact size without cutting or sawing.
  • Coated face and back for easy handling.
  • Ideally suited for soffit applications.
  • Suitable for radius applications.

*Mold and Mildew Resistance

e2XP Sheathing was designed to provide extra protection against mold and mildew compared to standard gypsum board products. When tested by an independent lab per ASTM D 3273 ("Standard Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber"), e2XP Sheathing achieved a score of 10, the best possible score for this test.

No material can be considered "mold-proof", nor is it certain that any material will resist mold or mildew indefinitely. When used in conjunction with good design, handling and construction practices, e2XP Sheathing can provide increased mold resistance versus standard gypsum board products. As with any building material, avoiding water exposure during handling, storage and installation, and after installation is complete, is the best way to avoid the formation of mold or mildew.