Gold Bond® BRAND eXP® 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.

eXP Sheathing is manufactured with an enhanced moisture and mold resistant core and facer. The facer is composed of a coated fiberglass mat with PURPLE® color which provides superior weather resistance capabilities. It is produced in 1/2" and 5/8" thicknesses, 4' wide in 8', 9' and 10' lengths. eXP Sheathing is lightweight, scores and cuts easily, and is specially coated on the front, back and sides for easy handling.