NRCA Metal Flashings study plan
NRCA Metal Flashings · Give each week a clear focus.
8 weeks · About 7 hours per week
Metal flashing materials and metallurgy (copper, steel, aluminum, zinc, lead, stainless, coatings and finishes) & Dissimilar-metal contact, galvanic corrosion, electrolysis and isolation detailing
Build a one-page comparison table of copper, lead, zinc, stainless steel, aluminum, and coated carbon steel covering melting range, thermal expansion, typical thickness/temper, and approved substrate types, citing at least one standard or manufacturer technical bulletin per metal.
Explain in your own words how galvanic series position, electrolyte presence, and anode-to-cathode area ratio drive corrosion rate, then rank five common metal pairings from most to least risky.
Identify three isolation strategies (bituminous coating, neoprene or EPDM separator, stainless fasteners, plastic-sleeved clips) and state where each belongs in a flashing assembly.
List the clearance and runoff rules that keep copper or lead discharge from landing on galvanized steel or aluminum below, and note the coating-failure mechanism involved.
Distinguish mill-finish, anodized, Kynar/polyester-coated, and terne-coated surfaces by how each affects solderability, fastener choice, and field touch-up.
Your checkpoint
A single reference sheet (two pages maximum) with the metal comparison table, the galvanic risk ranking, and a labeled sketch of an isolated copper-to-galvanized transition showing separator, fastener, and drainage path.
Fabrication fundamentals: shop and field layout, forming, soldering, brazing, welding, fastening and sealants
Describe safe layout procedure for a flashing detail: measuring, transferring dimensions to flat stock, allowing for bend deduction and material thickness, and marking bend lines.
Sequence the forming steps for a simple hemmed drip edge and a locked standing seam, naming the tool used at each step and the order that prevents distortion.
Compare soldering, brazing, and welding for copper, stainless, and coated steel, stating which joint types and thicknesses each suits and which metals must never be heat-joined.
Specify flux, solder alloy, and heat-control practice for a copper soldered seam, and explain why residual flux must be removed.
Select fasteners and sealants for three scenarios (concealed cleat, exposed lap, movement joint), justifying fastener type, spacing, and sealant compatibility with the metal.
Your checkpoint
A written fabrication procedure card for one representative flashing (for example a chimney cricket or a wall cap) listing every cut, bend, join, fastener, and sealant step in order with the tool named at each step.
Fabrication fundamentals: shop and field layout, forming, soldering, brazing, welding, fastening and sealants & Roof penetration flashings: vent stacks, pipes, curbs, chimneys, skylights and equipment supports
Draft dimensioned flat-pattern layouts for a vent-stack flashing, a pipe boot with a rolled collar, and a rectangular equipment curb, showing seam locations and expansion allowance.
Explain how to form and join a pitch pan or curb cap so that water sheds away from the penetration and the joint stays above the water line.
Identify the flashing sequence for a masonry chimney: base flashing, counterflashing, cricket, and cap, and state which component is installed first and why.
Describe how skylight and equipment-support curbs are flashed and counterflashed, including how the curb height relates to the roof slope and snow or ponding exposure.
Practice one heat-joined or mechanically locked joint on scrap of the exam-relevant metal and record what failed or worked.
Your checkpoint
A shop packet of three dimensioned flat-pattern drawings (vent stack, pipe collar, rectangular curb) with bend lines, seam types, and a one-paragraph sequence note for each.
Roof drainage flashings: gutters, downspouts, scuppers, conductors, expansion joints and overflow provisions & Base flashings, edge metal, drip edges, gravel stops and roof-to-wall transitions
Size a gutter and downspout for a stated roof area and rainfall intensity using the rational-method approach, and show the arithmetic.
Lay out gutter slope, hanger spacing, expansion allowance at end caps, and outlet placement for a run of at least 40 feet.
Detail a scupper and overflow (secondary drainage) provision so the overflow outlet sits above the primary inlet and discharges visibly.
Draw the layer order and fastening for edge metal, drip edge, gravel stop, and a roof-to-wall transition, naming which layer laps over which.
Explain how expansion joints and conductor (leader) joints accommodate movement without trapping water or stressing fasteners.
Your checkpoint
A drainage takeoff and detail sheet for one hypothetical roof: computed gutter and downspout sizes, hanger spacing, and three labeled section sketches (gutter with expansion joint, scupper with overflow, roof-to-wall base and counterflashing).
Wall and through-wall flashings, counterflashings, reglets, copings and parapet terminations
Describe reglet cutting, insertion depth, and sealant detailing for a through-wall flashing, and state how weep provisions release water at the wall base.
Sequence base flashing, through-wall flashing, and counterflashing so each laps shingle-fashion and the counterflashing sheds over the base.
Detail coping and parapet termination, including cleat attachment, joint spacing for expansion, and how the cap sheds to both roof and exterior face.
Explain how concealed counterflashing is anchored in a reglet versus surface-mounted, and the trade-offs in serviceability and water resistance.
Identify the causes of the most common wall-flashing failures (wrong lap direction, blocked weeps, sealant-only terminations) and the corrective detail for each.
Your checkpoint
A wall-section drawing set (three details: reglet through-wall flashing, counterflashing over base, parapet coping) each annotated with lap direction, fastener type and spacing, sealant location, and weep path.
Roof penetration flashings: vent stacks, pipes, curbs, chimneys, skylights and equipment supports & Base flashings, edge metal, drip edges, gravel stops and roof-to-wall transitions & Codes, standards, manufacturer instructions and safe work practices for metal flashing installation
Cross-reference the installation requirements in the applicable code or standard for flashing height above roof, counterflashing, and secondary drainage, and note where manufacturer instructions are stricter.
Assemble a pre-task safety checklist covering fall protection, hot-work permits for soldering and welding, ladder and edge practice, and metal-handling cuts.
Compare two manufacturer installation guides for the same product family and list where their fastener spacing, sealant, or clearance instructions diverge.
Explain how to read a manufacturer detail drawing and translate it into a field instruction the crew can follow without the drawing in hand.
Describe the inspection and testing steps (water test, visual lap check, fastener pull check) that verify a completed flashing before close-out.
Your checkpoint
A one-page code-and-manufacturer cross-check matrix for three flashing conditions, with columns for code requirement, manufacturer requirement, chosen field practice, and the safety control that applies.
Metal flashing materials and metallurgy (copper, steel, aluminum, zinc, lead, stainless, coatings and finishes) & Roof drainage flashings: gutters, downspouts, scuppers, conductors, expansion joints and overflow provisions & Wall and through-wall flashings, counterflashings, reglets, copings and parapet terminations & Base flashings, edge metal, drip edges, gravel stops and roof-to-wall transitions
Re-derive the metal comparison and galvanic ranking from week one without notes, and correct any gaps.
Redo drainage sizing and expansion-joint layout from memory, then check against your week-four sheet.
Redraw the wall-section details from week five from memory and mark every lap and fastener.
Write out the edge-metal and roof-to-wall layer order and the reason each layer laps as it does.
Identify your three weakest subtopics from the redraw exercise and schedule targeted review for each.
Your checkpoint
A closed-book practice set of ten self-written questions spanning materials, drainage, wall flashings, and edge metal, answered and self-scored with a short note on each error.
Dissimilar-metal contact, galvanic corrosion, electrolysis and isolation detailing & Codes, standards, manufacturer instructions and safe work practices for metal flashing installation & Fabrication fundamentals: shop and field layout, forming, soldering, brazing, welding, fastening and sealants
Build a final isolation-detail checklist that a field installer could carry, covering dissimilar-metal contact, fastener selection, and drainage separation.
Summarize the code, standard, and manufacturer-instruction hierarchy in five sentences and state what to do when they conflict.
Run a timed 40-question mixed practice exam and record score by domain.
Review every missed item, writing the correct principle rather than the answer, and confirm understanding with a fresh example.
Finalize a one-page exam-day summary sheet of formulas, clearances, and sequencing rules.
Your checkpoint
A timed practice-exam score report by domain plus a one-page exam-day summary sheet of formulas, clearances, lap rules, and isolation details.
Milestones
Week 2: Can state, without notes, the galvanic risk ranking of five metal pairings and the isolation method for each, and can describe the bend sequence for a hemmed drip edge.
Week 4: Scores at least 70 percent on a self-made 20-question quiz covering materials, fabrication, and drainage sizing, with correct arithmetic shown for the sizing items.
Week 6: Can draw the through-wall flashing, counterflashing, and coping details from memory with lap direction and fastener spacing labeled, and can cite the code and manufacturer requirement for flashing height and secondary drainage.
Week 8: Scores at least 80 percent overall on the timed 40-question mixed practice exam with no domain below 60 percent, and has a completed exam-day summary sheet.