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Roofing & Weatherproofing Standards Flashcards

7 cards from real CCI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Roofing & Weatherproofing Standards flashcards as text
  1. What is the primary difference between a hot-applied and cold-applied built-up roofing system?

    Answer: Hot-applied uses molten bitumen while cold-applied uses solvent-based adhesives or emulsions

    Hot-applied BUR systems use molten bitumen mopped between plies, while cold-applied systems use solvent-based adhesives or emulsions that cure at ambient temperatures.

  2. Per SMACNA standards, what is the recommended minimum thickness for lead flashing used at roof penetrations?

    Answer: 2.5 lb/sq ft (0.109 inches)

    SMACNA recommends minimum 2.5 lb/sq ft (approximately 1/32-inch) lead for most roof flashing applications to provide adequate durability.

  3. An inspector observes that roof vents are installed within 10 feet of a property line. What is the primary code concern?

    Answer: Fire spread risk requiring fire-rated assemblies

    Roof vents near property lines raise fire-spread concerns, as openings in the roof assembly can allow fire to spread between adjacent structures, requiring fire-rated protection.

  4. What is the purpose of a vapor retarder installed on the warm side of roof insulation in a cold climate?

    Answer: To prevent water vapor from condensing within the insulation assembly

    A vapor retarder on the warm side of insulation prevents interior moisture-laden air from migrating into the roof assembly and condensing, which would degrade insulation and cause rot.

  5. When inspecting a standing seam metal roof, what type of fastener system is preferred to allow for thermal movement?

    Answer: Concealed clips that float within the seam

    Concealed floating clips allow metal panels to expand and contract with temperature changes while maintaining weather tightness and a clean appearance.

  6. Which roofing system uses a spray-applied foam base covered with a protective elastomeric coating?

    Answer: Spray polyurethane foam (SPF) system

    SPF roofing consists of spray-applied polyurethane foam that expands and hardens, then is protected by an elastomeric coating that provides UV and weather resistance.

  7. What is the minimum slope required for a low-slope roof to allow for positive drainage per IBC Chapter 15?

    Answer: 1/4 inch per foot

    IBC requires a minimum slope of 1/4 inch per foot (approximately 2%) for low-slope roofs to ensure positive drainage and prevent ponding water.