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GreenGuard XFP14 Fanfold Underlayment

Premium Choice Fanfold ¼” XPS Underlayment with Hinges

Designed to be used as a “leveling board”, adding insulation and moisture protection in installation of new vinyl siding over old siding.

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Kingspan Insulation plays a key role in KSU's impressive new student center

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Premium level ⅜” XPS fanfold with reflective facer and cut-and-fold hinges

GreenGuard XFP38 Fanfold Underlayment

Premium level ⅜” XPS fanfold with reflective facer and cut-and-fold hinges
Premium choice underlayment ¼” thick XPS; best facers, cut-and-fold hinges
Premium level ⅜” XPS fanfold with our best facers, cut-and-fold hinges

GreenGuard XP14 Fanfold Underlayment

Premium choice underlayment ¼” thick XPS; best facers, cut-and-fold hinges

GreenGuard XP38 Fanfold Underlayment

Premium level ⅜” XPS fanfold with our best facers, cut-and-fold hinges
Kingspan GreenGuard XFP14 Fanfold Underlayment on a transparent background.

GreenGuard XFP14 Fanfold Underlayment

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