PROPINK® Fanfold Underlayment Board Product Data Sheet Typical Physical Properties Property Test Method Water Vapor Permeance, perms, min Flame Spread Smoke Development Maximum Service Temperature, °F Product Availability Thickness PROPINK Fanfold Underlayment Board ® Samples aged for 180 days at laboratory conditions of 73 +/-2°F and 50% RH. Test conducted at 75°F mean temperature. 2 Hinged every 24 inches. 1 Description PROPINK® Fanfold Underlayment Board is a thin extruded polystyrene fanfold board faced on both surfaces with a plastic film facer. PROPINK® Fanfold Underlayment Board has an advanced cut folded hinge every 24 inches to provide ease of package assembly and ease of installation at the job site. PROPINK® Fanfold Underlayment Board is engineered to provide resistance to air infiltration and liquid water penetration when used in residential and commercial exterior wall construction. PROPINK® Fanfold Underlayment Board is perforated to permit water vapor to pass through the board to prevent the trapping of moisture within the structure. PROPINK® Fanfold Underlayment Board is generally intended for use as a backer board for residing applications where it provides a flat uniform surface for the application of new siding products. Product Attributes • Lay-flat hinge and fanfold allows for quick application and provides a smooth surface for an excellent appearance of the finished siding applications. • Large piece coverage and minimal joints reduce drafts and increase thermal comfort and energy efficiency • Perforated construction permits the transmission of water vapor through the assembly while limiting the intrusion of liquid water. • Polystyrene core and plastic film facers provide a tough, durable product that withstands the construction environment. • Meets the flame spread and smoke generation requirements for foamed plastics. Technical Data • Material – Extruded polystyrene core with tough polystyrene facers on both sides. • Sizes – Available in 4' x 50' (200 ft.2) bundle (folded sheets), 1/4" or 3⁄8" thicknesses, folded every 2'. • Weight – Approximately 15 lbs./bundle for the 1/4" thickness and 19 lbs./bundle for the 3⁄8" product. • Packaging – 1/4" product shipped in units of 45 bundles per pallet, 3 ⁄8" product shipped in units of 30 bundles per pallet. • Underwriters Laboratories Inc.

PROPINK® Fanfold Underlayment Board Product Data Sheet Installation Instructions Easy to Handle and Install PROPINK® Fanfold Underlayment Board is a lightweight foam board that unfolds quickly to cover a 4 by 50 foot (200 square foot) area. The lightweight bundles can be cut to fit with a common utility knife, thus saving labor costs. PROPINK® Fanfold Underlayment Boards should avoid prolonged exposure to sunlight. The new siding material should be installed as soon as possible after installation. Disclaimer of Liability Technical information contained herein is furnished without charge or obligation...