Which NRCA manual provides the primary standard for architectural sheet-metal flashing design and installation?
Standards And References
Question · Easy
Six feet: a hard-hat anthem
Short
Which complementary industry manual is used alongside the NRCA manual for architectural sheet-metal flashing work?
What is the minimum recommended weight (oz per sq ft) for copper sheet used in architectural flashing applications per industry standards?
Materials And Gauges
Question · Medium
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When specifying aluminum flashing thickness, which gauge designation is commonly used for standard architectural applications?
What is the approximate thermal expansion of copper per 100 linear feet per 100°F temperature change?
Thermal Expansion
Question · Hard
OSHA fall heights, to scale
Aluminum sheet expands approximately how much per 100 linear feet per 100°F temperature change?
What is the maximum recommended cleat spacing for copper counterflashing to allow for thermal expansion without buckling?
Installation Techniques
Which edge treatment is required on sheet-metal flashings to eliminate sharp edges and increase rigidity?
Which type of seam is used in copper coping and gravel-stop flashing to allow longitudinal thermal movement while maintaining a weathertight joint?
Expansion Joints
An S-lock seam in sheet-metal flashing is primarily used for which purpose?
Galvanic corrosion between dissimilar metals is a primary concern in flashing installations. Which metal pairing must be avoided because copper corrodes aluminum rapidly?
Galvanic Corrosion
Why must copper flashing not be installed upslope of galvanized steel gutters or trim?
Which metal is the most corrosion-resistant option for flashing in coastal or highly corrosive environments?
What is the primary difference between soldering and using a sealant for joining copper flashings?
Soldering And Sealants
After soldering copper flashing with an acid flux, what is the required cleanup procedure?
Which ANSI/SPRI standard governs perimeter edge metal (gravel stops, drip edges, and copings) wind resistance requirements?
A gravel stop is installed at the perimeter of a low-slope built-up roof. What is its primary function?
Perimeter Edge Metal
What is the minimum recommended width of an open W-valley (also called a W-metal valley) on a steep-slope asphalt shingle roof per NRCA standards?
Valleys
What is the function of a kickout diverter flashing at the base of a rake-wall intersection?
Step And Counter Flashing
In step-and-counter flashing at a sidewall, what is the correct relationship between step flashing and counterflashing?
What OSHA regulation establishes fall protection requirements for roofing work on low-slope roofs?
Safety
On low-slope roofs, OSHA requires fall protection when workers are within how many feet of an unprotected roof edge?
When handling sheet metal coils and sheets on a rooftop, which material handling practice is critical to prevent worker injury?
Zinc (zinc alloy) architectural flashing is specified for its patina and durability. What is the approximate thermal expansion of zinc per 100 linear feet per 100°F?
Which type of flashing is installed through the full thickness of a masonry wall to direct water that has penetrated the wall back to the exterior?
Through Wall Flashing
What is the purpose of a coping cap on a parapet wall?
Coping And Counterflashing
In a coping cap installation, how should adjacent coping sections be joined to allow for thermal movement?
When installing a reglet-type counterflashing in existing masonry, what is the correct installation method?
A scupper is a through-wall opening in a parapet wall designed for what purpose?
Scuppers
What minimum height above the finished roof surface should a scupper opening be positioned on a low-slope roof?
What is the minimum recommended lap for step flashing under each shingle course on a steep-slope asphalt shingle roof?
When installing a drip edge at the eave of a steep-slope asphalt shingle roof, how should it be positioned relative to the underlayment?
Drip Edge
At the rake of a steep-slope asphalt shingle roof, how should the drip edge be installed relative to the underlayment?
Which galvanized steel sheet specification provides the minimum corrosion protection for standard flashing applications in non-coastal environments?
What is the maximum recommended unsupported span for a metal coping cap to prevent excessive oil-canning (waviness)?
Which type of solder is recommended for joining copper architectural flashings per NRCA and SMACNA guidelines?
What pre-tinning step is required before soldering copper sheet-metal joints?
At what minimum height above the roof surface should the base of a counterflashing be positioned on a low-slope roof?
What is the primary function of a cleat in sheet-metal flashing installations?
When fabricating a corner in copper flashing, which method provides the strongest, most watertight joint?
What is the galvanic series, and why is it important for architectural flashing installations?
Which separation method is acceptable to prevent galvanic corrosion when aluminum flashing must be installed adjacent to copper components?
For an open W-valley on a steep-slope asphalt shingle roof, the valley shingles should be cut along which type of line as they approach the valley centerline?
Which NRCA-recommended practice prevents ice dam water from backing under step flashing on a steep-slope roof in cold climates?
What is the purpose of a conductor head (also called a leader head or collection box) in an architectural drainage system?
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