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PDFWAC 296-150V-0950

What requirements apply to roof coverings?

(1) The roof covering must be securely fastened in an approved manner to the supporting roof construction and must provide weather protection for the vendor unit and the occupants.
(2) Exterior covering materials, including metal coverings, must be moisture and weather resistant and contain corrosion resistant fasteners to prevent wind and rain deterioration.
Electro-plated, electro-deposited zinc, and electro-galvanized staples are not considered corrosion-resistant materials.
(3) All exterior openings or penetrations into the conversion vendor unit or medical unit around piping, ducts, plenums, or vents must be sealed with moisture-resistant material.
[Statutory Authority: Chapter 43.22 RCW. WSR 99-18-069, ยง 296-150V-0950, filed 8/31/99, effective 10/1/99.]
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