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    Author(s): Edward Burke; Tony Bonura; Charles G. Carll; Dennis Connelly; Christopher Hunt; Doug Mall; Arnie Nebelsick; Norm Slavik; Brent Stuart; Alex Wiedenhoeft; R. Sam Williams
    Date: 2009
    Source: JCT CoatingsTech. Vol. 6, no. 4: pages 36-39.
    Publication Series: Miscellaneous Publication
    PDF: Download Publication  (3.04 MB)


    Moisture control is a critical means of improving the performance of solid-color stain and paint on wood siding. In this article, recommendations are given for constructing a rain screen, sealing the end grain, and back-priming siding to achieve this goal. Rain screen con­struction and back priming inhibit water absorption and bleed from run-down extractives if water gets behind the siding. Inhibiting water absorption improves dimensional stability of siding, thus improving finish performance. Sealing the end grain with primer decreases paint peeling and bleeding of diffuse extractives near the end of boards. These techniques should be used in combination with structure designs having adequate roof overhangs, ground clear­ance to bottom course of siding, roof-edge flashing, gutters, and downspouts.

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.


    Burke, Edward; Bonura, Tony; Carll, Charles G.; Connelly, Dennis; Hunt, Christopher; Mall, Doug; Nebelsick, Arnie; Slavik, Norm; Stuart, Brent; Wiedenhoeft, Alex; Williams, R. Sam. 2009. Improving the performance of painted wood siding : rain screen, end-grain seal, and back priming. JCT CoatingsTech. Vol. 6, no. 4: pages 36-39.


    Siding, performance standards, building materials, service life, weathering, paint, deterioration, moisture, primers, absorption, coatings, finishes, finishing, testing, wood siding, exposure tests, durability, decay, ICC-ES AC38, moisture content, edge sealing, rain screens, moisture control, dimensional stability

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