Cut-n-fold hinges improves ability to lay flat. It is lightweight, easy to cut, and install.
GreenGuard Q350 Fanfold Underlayment
Economical fanfold underlayment XPS 0.3" thick with crease-fold hingesGreenGuard FQ250 Fanfold Underlayment
Economical fanfold XPS 0.2" thick with reflective facer on one side
Kingspan's performance choice at ¼” (0.25") thick closed-cell extruded polystyrene (XPS) fanfold 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 fanfolded bundles 4’ x 50’ with crease-fold hinges. It is lightweight and easy to cut and install.
Product Highlights
Use as a "leveling board"
Cuts clean and easy with no loose foam beads
Perforated to allow moisture vapor to escape
