National Roofing Contractors Association NRCA is an association of roofing, roof deck and waterproofing contractors; industry-related associate members; and international members worldwide.
Western States Roofing Contractors Association The Western States Roofing Contractors Association (WSRCA) was formed in 1974 to address the problems and concerns of the roofing contractor and to help promote the standards of quality and professionalism in the Western roofing industry.
Department of Labor and Industries The Department of Labor and Industries' Construction Compliance section is responsible for the administration of Washington State's Contractor Registration Law.

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