NRCA Slate case studies
NRCA Slate · Put your knowledge to work in context.
The NRCA Slate credential is a specialist slate-roofing certification for roofing professionals who install, repair and restore natural-slate roof systems. It is aimed at experienced slaters, foremen, estimators and roofing contractors who want documented proof of competence in slate work rather than general roofing knowledge. Candidates typically come from steep-slope residential and historic-restoration backgrounds, where slate tolerance for error is low and water management depends on correct lay, headlap and flashing detailing. The exam is organized into five domains. The NRCA Slate case studies are 5 cases and about 2,892 words.
1Historic Church Slate Matching and Phased Restoration
A 1920s Vermont church has an 8,000-square-foot, 12/12 slate roof in a cold-climate historic district. The original slate is 20 inches by 12 inches, 3/16 to 1/4 inch thick, unfading green.
594 words, about 3 min2Exposure and Fastener Errors on a Steep New England Roof
A contractor is installing a new slate roof on a 14/12 gable in northern New England. The specified slate is 24 inches long by 12 inches wide and 1/4 inch thick.
559 words, about 3 min3Board Deck, Underlayment, and Chimney Leaks on a 12/12 Roof
An 1890s house has a 12/12 slate roof over 1-inch by 8-inch pine roof boards laid with gaps up to 3/4 inch. The rafters are 2 by 8 at 16 inches on center.
559 words, about 3 min4Mansard Roof: Coating Proposal Versus Historic Restoration
An 1895 mansard roof has 70% original 16-inch by 10-inch slate and 30% asphalt shingles installed on the lower slope after a 1980s storm. The slate is 3/16 inch thick, and many slates are slipped or cracked at the dormer.
563 words, about 3 min5Fall Protection, Access, and Historic Facade Constraints
A roofing crew is preparing to replace 6,000 square feet of slate on a 9/12 roof. The eave is 32 feet above grade.
617 words, about 3 min