Search Results for “roof course”

exposure to weather. b. Crevice corrosion caused by stacking panels while they were wet (before installation on the roof). c. Galvanic corrosion from coating aluminum-core panels with galvanized steel. Where the galvanic coating wears thin, moisture catalyzes corrosion. d. Surface corrosion from

it connects a roof structure to the exterior walls in a manner that will allow the roof structure to lift slightly to defeat damage from inflation of the interior. b. It connects the bottom chords of roof trusses to interior partition walls. c. It serves as a template for marking layout locations on top

Get Started Grow Your Business More… Show Menu Join InterNACHI® Jump to flashcard menu Home Inspection Flashcard #203 Currently only showing flashcards in the Roofing category. Clear filters What's Your Call? What is the potential problem with the roof drainage system shown here? a. Inadequate

at A, corrosion may spread to metal lathe installed behind stucco, requiring stucco removal for repair, a potentially much more expensive problem than B, in which the roof has no direct interface with the exterior wall-covering materials. b. Corrosion on A is more widespread and uniform and so

at the sidewall. b. Seams will not prevent moisture intrusion. c. Visible fasteners attach to the shingle in the course below, not to the roof. d. Fastened with drywall screws, which will eventually corrode. Show Details / Explanation You must be logged in as an InterNACHI member to see this card