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    ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​Finestop VB​

    Finestop VB is a one-component fluid-applied vapor impermeable air/water-resistive barrier. Waterproof and resilient, it may be spray-, roller-, trowel-, or brush-applied directly to approved wall substrates. It provides excellent secondary moisture protection behind most wall claddings including EIFS, stucco (slip sheet required), brick, siding and metal panels.

    ​Meets ICC-ES AC212 water-resistive barrier tests
    ​One fully qualified air/water-resistive barrier material for the entire building
    ​Meets requirements of ICC-ES AC 148
    ​Can be used as a flexible flashing in rough openings or through-wall penetrations
    ​Meets ASTM D 1970 Nail Sealability Requirements
    ​Approved for Finestone Wall Systems
    ​Full system warranty with Finestone EIFS and stucco wall claddings
    ​Liquid-applied, continuously-bonded membrane; eliminates seams, lap joints and staples
    ​Transfers wind loads directly to the substrate
    ​One component, water-based, very low VOC content
    ​Safe for workers and the environment, low odor, easy application
    ​Nonflammable as applied
    ​Promotes workplace safety
    Compatible with lightweight, low-cost spray equipment
    ​Fast, easy economical application
    ​No primer required
    ​Single pass application on most substrates


    For use over the following exterior wall substrates:

    Poured concrete/unit masonry, ASTM C1177 type sheathings, including:
    • DensGlassTM and DensElementTM exterior sheathing
    • eXPTM sheathing, GlasRoc® sheathing
    • SecurockTM glass-mat sheathing
    • Weather DefenseTM Platinum sheathing
    • GreenGlass® sheathing
    • PermaBaseTM cement-board by National Gypsum and other cement-boards (ASTM C1325 Type A Exterior)
    • Untreated Exposure I or exterior plywood sheathing (grade C-D or better)
    • Untreated Exposure I OSB, gypsum sheathing (ASTM C79/ASTM C1396)​
    ​​Do not use Finestop VB for below-grade applications or on surfaces subject to water immersion.