NRCA Slate study guide
NRCA Slate · Work through your exam, one topic at a time.
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 study guide has 5 sections and about 2,131 words.
01Slate Roof System Fundamentals and Materials
This domain tests whether you can identify, grade and specify roofing slate, and prove the numbers behind a slate layout. Slate is a low-grade metamorphic rock formed from shale; recrystallized mica and chlorite give it a directional grain (slaty cleavage).
435 words, about 2 min02Slate Roof Installation Practices
This domain tests the layout and fastening rules that let a slate roof last a century. Every part of a slate field is covered by two layers of slate, called double-coursing.
434 words, about 2 min03Roof Deck, Underlayment and Flashing
This domain tests what holds the slate up and what keeps water out before any slate is laid. Slate needs a solid, stiff deck.
420 words, about 2 min04Repair and Restoration of Slate Roofs
This domain tests diagnosis: knowing why a slate roof leaks before you touch a slate. On a well-built roof the slate often outlives the fasteners.
422 words, about 2 min05Safety, Codes and Standards
This domain tests the legal floor under everything else: fall protection, silica exposure, and the code and ASTM references a slate contractor is expected to name. OSHA 29 CFR 1926.500 defines a steep roof as one steeper than 4:12.
420 words, about 2 min