SC Roofing Practice Questions - South Carolina Roofing Contractor Examination Exam

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Which flashing combination creates the most severe galvanic corrosion risk if the metals are in contact or if water runs from one onto the other?

Aluminum panels with aluminum step flashing Stainless-steel fasteners in stainless-steel coping Copper flashing upstream of bare galvanized or Galvalume steel panels Lead-coated copper with copper nails

Correct Answer:

Copper flashing upstream of bare galvanized or Galvalume steel panels

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