NRCA is offering a 60% discount on The NRCA Roofing Manual: Steep-slope Roof Systems -- 2009. The third volume of The NRCA Roofing Manual offers comprehensive information about the design, materials and installation techniques applicable to asphalt shingle, clay and concrete tile, metal shingle and synthetic component, slate, and wood shake and wood shingle roof systems used in steep-slope applications. With the discount, the member price for the manual is $50, and the retail price is $78. Learn more.