For replacement siding operations, “leveling board”, adding insulation and moisture protection in installation of new vinyl siding over old siding.
Premium choice ¼” thick closed-cell extruded polystyrene (XPS) fanfold underlayment with a reflective surface on one side for added energy efficiency for use in replacement siding operations; designed to be used as a “leveling board”, adding insulation and moisture protection in the installation of new vinyl siding over old siding. It is configured in fanfold bundles 4’ x 50’ with cut-n-fold hinges which improves its ability to lay flat. It is lightweight, easy to cut, and install.
Product Highlights
Reflective surface on one side for added energy efficiency
Top-of-the-line facer on other side
Lay flat cut-and-fold hinges
Perforated to allow moisture vapor to escape
GreenGuard XP38 Fanfold Underlayment
Premium level ⅜” XPS fanfold with our best facers, cut-and-fold hingesGreenGuard XFP38 Fanfold Underlayment
Premium level ⅜” XPS fanfold with reflective facer and cut-and-fold hinges
