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Pactiv Building Products GreenGuard® XFP38 Siding Underlayment--3/8 in. x 4 ft x 50 ft (Fanfold, Reflective 1-side)

Pactiv Building Products

GreenGuard® XFP38 Siding Underlayment--3/8 in. x 4 ft x 50 ft (Fanfold, Reflective 1-side)

ebuild Ref. No. XFP38
Retail Price Information
List Price Notice

Where prices are shown, they are based on the best information available to ebuild at the time the product information was received and may not be current,and generally refer to manufacturer's suggested retail prices. They should be used for reference only. In some instances, the list price refers to the lowest-cost version of an item that may be available in a variety of colors, finishes, sizes -- or upgraded features. Check with local distributors for actual prices.

Features and Benefits

  • The GreenGuard® XP Series is our best-value Fanfold Siding Underlayment
  • Extruded Polystyrene Foam (XPS) with extra tough flexible plastic facers on both sides
  • Features the advanced cut-and-fold hinge for the best layflat performance available
  • This product easily bends around corners, with excellent resistance to cracking, denting and tearing
  • One side is printed with grid lines for easy alignment and cutting
  • Available as 1/4" or 3/8" thickness
  • Also available as XFP series, with a perforated reflective facer on one side for enhanced thermal performance under recommended installation guidelines

Product Specifications

Manufacturer Model No.XFP38
Product NameGreenGuard® XFP38 Siding Underlayment--3/8 in. x 4 ft. x 50 ft. (Fanfold, Reflective 1-side)
Width48 in.
Length50 ft
Thickness3/8 in.
FacingReflective plastic
MaterialExtruded polystyrene (XPS)
Edge DetailSquare
Water AbsorptionASTM C 272: 2.0%
Water Vapor Trans. RateASTM E 96, Procedure A: 1.3 perms
Flame SpreadASTM E 84/UL 723: 10
Smoke DevelopedASTM E 84/UL 723: 45-140
Quantity per Unit
  • 2.0 squares/bundle
  • 60 squares/pallet
Meets Standards
  • California Bureau of Home Furnishings License No.: TB 1334
  • Canadian Construction Materials Centre (CCMC-NRC): 12764-R
  • International Conference of Building Officials (ICBO-ES): 4280
  • Minnesota Department of Energy, Chapter 7640: Yes
  • Southern Building Code Congress International, Inc. (SBCCI PST &ESI): 2228A
  • Underwriters Laboratories, Inc, Classification Certificate: A184
Related Products
  • GreenGuard® Contractor Tape
  • GreenGuard® Sill Sealer

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