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Kingspan Insulation
3/8" x 4' x 50' GreenGuard® XP38 Fanfold Siding Underlayment
QXO product C-040427 · 1 options
Selected: PBP GG XP38 FANFOLD 3/8X4X50
QXO SKU 40427 · Product number PBPGG38XP450
Free, no-obligation quote. Our team confirms local availability, required quantities, compatible components, and installation pricing.
Selected option specifications
- UOM
- BDL
- Item Weight
- 19.7
- Algae Resistance
- No
- Applicable Standards
- Intertek CCRR 1022 CA BEARHFTI Lic. No. 1506 Canada CCMC 12764-R MN Dept. of Energy Chapter 7640 UL LLC See Classification Certificate A184
About this product
Kingspan GreenGuard® XP38 Siding Underlayment comprises 3/8" thick closed-cell polystyrene (XPS) with perforated capsheets on both sides. It is configured in fanfolded bundles with cut-n-fold hinges. It is lightweight and easy to cut and install. It is designed to be used as a "leveling board", added insulation and added moisture protection in installation of new vinyl siding over old siding. It is available with a reflective surface on one side, Kingspan GreenGuard® XFP38 Siding Underlayment, for added energy efficiency.



