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Washington Administrative Code (Last Updated: November 23, 2016) |
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Title 51. Enterprise Services, Department of (Building Code Council) |
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Chapter 51-51. State Building Code adoption and amendment of the 2015 edition of the International Residential Code. |
Section 51-51-0702. Section R702—Interior covering.
Latest version.
- R702.5 Other finishes. Wood veneer paneling and hardboard paneling shall be placed on wood or cold-formed steel framing spaced not more than 16 inches (406 mm) on center. Wood veneer and hardboard paneling less than 1/4-inch (6 mm) nominal thickness shall not have less than a 3/8-inch (10 mm) gypsum board or gypsum panel product backer. Wood veneer paneling not less than 1/4-inch (6 mm) nominal thickness shall conform to ANSI/HPVA HP-1. Hardboard paneling shall conform to CPA/ANSI A135.5. All structural panel components within the conditioned space such as plywood, particle board, wafer board and oriented strand board shall be identified as "EXPOSURE 1," "EXTERIOR" or "HUD-APPROVED."