NRCA ProCertified Metal Shingle Installer

Which tool is the preferred method for cutting metal shingles to avoid damaging the coating system?

• AAngle grinder with an abrasive cut-off disc
• BAviation snips or power nibblers
• CReciprocating saw with a metal-cutting blade
• DCircular saw with a carbide-tipped blade

For a steep-slope metal shingle roof assembly to achieve a UL 790 Class A fire rating, what is the typical assembly requirement?

• AMetal shingles alone qualify as Class A without additional layers
• BMetal shingles must be installed over a Class A fire-rated deck board with appropriate un…
• CA single layer of 30-lb felt is sufficient to achieve Class A
• DClass A requires at least two layers of metal shingles in a double-coverage pattern

What impact resistance rating does a metal shingle need to qualify as Class 4 under UL 2218?

• AMust withstand a 1-inch steel ball dropped from 12 feet without cracking the substrate
• BMust withstand a 2-inch steel ball dropped from 20 feet without cracking the substrate
• CMust withstand a 1.75-inch steel ball dropped from 20 feet without permanent deformation
• DMust withstand a 2-inch steel ball dropped from 20 feet without cracking the coating

Which underlayment type is most commonly required under metal shingles installed on low-slope steep-roof applications or in hot climates where the metal surface temperature can exceed 180°F?

• AStandard 15-lb asphalt-saturated felt
• BSynthetic polypropylene slip sheet
• CSelf-adhering high-temperature modified bitumen membrane
• DRubberized EPDM sheet underlayment

What is the primary functional purpose of the interlocking leg on a stamped metal shingle?

• ATo provide the primary fastening to the deck
• BTo create a mechanical interlock between adjacent shingles for weather resistance and str…
• CTo act as a thermal break between shingles
• DTo allow water to drain freely through the panel joints

When installing metal shingles directly to a solid deck (direct-to-deck method), which fastener placement is correct?

• AFasteners are driven through the exposed face of each shingle into the deck
• BFasteners are placed in the concealed nailing flange at the top of each shingle panel
• CFasteners are driven through the interlocking side leg into the adjacent shingle
• DOnly adhesive is used in direct-to-deck installation; mechanical fasteners are not requir…

A PVDF (polyvinylidene fluoride) coating on a metal shingle is specified primarily for which performance characteristic?

• AEnhanced fire resistance at the panel surface
• BSuperior chalk and fade resistance with long-term color retention
• CImpact resistance exceeding Class 4 UL 2218 requirements
• DAcoustic dampening to reduce rain noise

What is the purpose of the starter course in a metal shingle installation?

• ATo provide the required slope to start water drainage at the eave
• BTo close off the exposed bottom of the first course shingles and complete the interlockin…
• CTo serve as an expansion joint between the fascia and the first course of shingles
• DTo secure the drip edge to the deck before shingle installation

When should a roofer perform touch-up painting on field-cut edges of PVDF-coated metal shingles?

• ATouch-up paint is not required because the galvanized or Galvalume base provides adequate…
• BImmediately after cutting, using a manufacturer-approved touch-up paint matched to the PV…
• COnly if the cut edge is visible from the ground after installation
• DTouch-up must be performed by the coating manufacturer, not the installer

Why must stone-coated steel shingles NOT be cut with an abrasive disc grinder?

• AAbrasive discs create cuts that are too rough and prevent proper interlocking
• BThe heat and iron sparks from abrasive cutting embed in the granules and create rust spot…
• CAbrasive discs remove too much material, causing the shingle to be undersized
• DStone-coated shingles are too thick for abrasive disc cutting to be effective

What is the main advantage of the batten-and-counter-batten installation method for metal shingles compared to direct-to-deck installation?

• AIt eliminates the need for any underlayment on the roof deck
• BIt creates a ventilated air space that reduces heat buildup and allows moisture to escape…
• CIt increases the fire rating of the assembly by one class
• DIt allows metal shingles to be installed on slopes as low as 1:12 without special detaili…

At a wall-to-roof intersection, what flashing component is installed first, directly against the wall, before the step flashing is woven with the metal shingles?

• ACounter flashing
• BApron flashing
• CBase flashing (step flashing pieces)
• DValley liner flashing

Thermal movement in a metal shingle roof is primarily managed by which installation practice?

• AUsing expansion joints every 20 feet along the roof slope
• BLimiting shingle panel length per manufacturer specifications and using slotted fastener…
• CApplying a flexible sealant at all panel-to-panel joints
• DInstalling a foam backer rod under each shingle course

What does the stone-coated granule layer on a stone-coated steel shingle primarily provide?

• AImproved structural rigidity and panel thickness
• BAesthetic texture resembling traditional roofing plus acoustic dampening and UV protectio…
• CA watertight barrier equivalent to a Class A underlayment
• DEnhanced galvanic protection replacing the zinc-aluminum alloy coating

Which OSHA standard governs fall protection requirements for roofing work on steep-slope roofs?

• A29 CFR 1910.23 — Ladders
• B29 CFR 1926.502 — Fall Protection Systems Criteria and Practices
• C29 CFR 1926.451 — Scaffolding
• D29 CFR 1910.132 — Personal Protective Equipment

What minimum roof pitch do most metal shingle manufacturers specify for installation without special low-slope detailing?

• A1:12
• B2:12
• C3:12
• D4:12

At a hip or ridge on a metal shingle roof, what is the purpose of the ridge cap or hip cap flashing?

• ATo provide the primary structural support for the ridge board
• BTo cover the exposed top edges of the uppermost shingle courses and seal the ridge agains…
• CTo act as an expansion joint between the two opposing roof planes
• DTo house the ridge vent while maintaining the metal shingle appearance

Which deck condition is most critical to verify before installing metal shingles on an existing roof tearoff?

• AThe deck must be painted with a primer coat before installation
• BThe deck must be structurally sound, flat, and free of delamination, soft spots, and mois…
• CThe deck must be pre-drilled with fastener patterns before shingle delivery
• DThe deck must be covered with a layer of 15-lb felt before the high-temperature underlaym…

In a valley formed by two intersecting metal shingle roof planes, which valley flashing approach is generally recommended for metal shingles?

• AOpen valley with a pre-formed W-shaped metal liner
• BWoven valley where shingles from both planes interlock across the centerline
• CClosed cut valley with asphalt shingles cut over the liner
• DNo flashing is needed in valleys because interlocking shingles are self-sealing

Which statement about using sealant with metal shingles is correct?

• ASealant should be applied generously to all panel-to-panel side and end laps to ensure wa…
• BSealant is used selectively at specific terminations, penetrations, and flashings per man…
• CNo sealant of any kind should be used with metal shingles because it restricts thermal mo…
• DOnly butyl tape is acceptable; tube-applied sealants are not permitted on metal shingles

What is the principal reason metal shingle warranty programs require that the roof have adequate attic ventilation?

• APoor ventilation reduces wind resistance and increases UL 2218 impact risk
• BTrapped heat and moisture in an under-ventilated attic can cause deck deterioration, cond…
• CVentilation is required to maintain the UL 790 Class A fire rating certification
• DInsurance companies require ventilation before insuring metal shingle roofs

Which metal is most commonly used as the substrate for premium stamped aluminum metal shingles compared to steel shingles?

• AAluminum, which is lighter and naturally corrosion-resistant but softer and less dent-res…
• BCopper, which is corrosion-resistant but is too heavy for residential applications
• CZinc, which is used exclusively for commercial metal shingle projects
• DTitanium, which provides the highest strength-to-weight ratio available

A roofer working on a steep-slope metal shingle installation must use a personal fall arrest system (PFAS). What is the maximum free-fall distance allowed by OSHA before the PFAS arrests the fall?

• A2 feet
• B4 feet
• C6 feet
• D10 feet

Which installation practice best prevents galvanic corrosion when fastening metal shingles to a steel structural deck?

• AUsing copper nails to fasten aluminum shingles because copper is noble and will not corro…
• BUsing fasteners of the same metal as the shingle panel, or using stainless steel fastener…
• CApplying a petroleum-based lubricant to all fasteners before driving them
• DUsing only pneumatic nail guns to minimize fastener contact time with the panel

What information must an installer confirm from the manufacturer's technical data before proceeding with a metal shingle installation?

• AThe Pantone color code of the coating system
• BMinimum slope, fastener type and spacing, underlayment specification, and maximum panel l…
• CThe installer's local building department approval number for the product
• DThe product's ENERGY STAR rating for cool roof reflectance

Which statement best describes how interlocking metal shingles resist wind uplift without exposed fasteners?

• AThe weight of the stone-coated granules provides sufficient wind resistance without mecha…
• BConcealed fasteners in the nailing flange, combined with the mechanical interlock between…
• CA continuous bead of high-strength sealant applied at each course provides the primary wi…
• DMetal shingles rely entirely on their mass and inertia to resist wind uplift

A stone-coated steel shingle has granules that are beginning to release and accumulate in the gutters after only three years. What is the most likely cause?

• ANormal weathering and granule weathering always occurs within the first three years
• BImproper cutting with abrasive tools damaged the acrylic bonding layer, causing granule d…
• CThe shingles were installed with the granule side facing down
• DGranule loss is caused exclusively by foot traffic during installation

Before starting a metal shingle installation, which safety inspection should be performed on a personal fall arrest system (PFAS)?

• AOnly the anchor point load rating needs to be verified; other components self-certify
• BA pre-use inspection of the harness, lanyard, anchor, and connectors for cuts, corrosion,…
• CAnnual third-party certification is sufficient; daily inspections are not required
• DInspection is only required when OSHA inspectors are present on the job site

What does 'Galvalume' refer to in the context of metal shingle substrates?

• AA steel sheet coated with a zinc-aluminum-silicon alloy (typically 55% aluminum, 43.4% zi…
• BA proprietary trade name for painted aluminum sheet used in commercial metal roofing
• CA steel sheet coated with pure zinc at a heavier coating weight than standard galvanizing
• DA composite panel consisting of two aluminum sheets bonded to a polyethylene core

At a penetration through a metal shingle roof (such as a pipe boot), what sequence is correct?

• AInstall the pipe boot over the metal shingles, then caulk around the perimeter
• BSet the pipe boot flange under the upslope shingles and over the downslope shingles, inte…
• CInstall all shingles first, then cut a hole and apply a surface-mount adhesive flashing p…
• DAny sequence is acceptable as long as a generous bead of sealant is applied at the pipe b…

Which type of fastener is typically specified for metal shingle installation to provide corrosion resistance and required withdrawal resistance?

• ASmooth-shank common nails, hot-dip galvanized
• BRing-shank or screw-shank nails, stainless steel or hot-dip galvanized, or self-drilling…
• CStaples with a 7/16-inch crown, electroplated galvanized
• DConcrete masonry anchors with plastic expansion sleeves

A building owner in a coastal environment (within 1 mile of saltwater) wants metal shingles. Which substrate and coating combination provides the best corrosion performance in this application?

• A26-gauge Galvalume steel with a standard polyester paint system
• BAluminum substrate with a 70% PVDF (Kynar 500) coating system
• C26-gauge galvanized steel with a polyurethane primer and polyester topcoat
• DBare mill-finish aluminum without any coating

What is the significance of AAMA 2605 for metal shingle coatings?

• AIt is the OSHA standard for lead paint abatement during metal roof installation
• BIt is the industry specification for high-performance organic coatings (typically 70% PVD…
• CIt sets the minimum gauge requirements for steel metal shingles in high-wind zones
• DIt is the UL standard for fire performance of metal roofing systems

During a metal shingle installation in cold weather (below 40°F), which precaution is most important regarding the self-adhering high-temperature underlayment?

• ACold weather has no effect on self-adhering underlayment; installation proceeds normally
• BThe underlayment adhesive becomes less tacky in cold temperatures; it may need to be warm…
• CSelf-adhering underlayment must be stored in a freezer overnight before cold-weather inst…
• DBelow 40°F, self-adhering underlayment must be replaced with 3-ply built-up roofing membr…

Which statement about ice and water shield (self-adhering membrane) use at eaves on a metal shingle roof is correct?

• AIce and water shield is optional in all climates because metal shingles are naturally ice…
• BIce and water shield must be installed at eaves in areas with ground snow load and at all…
• CIce and water shield must only extend 12 inches up from the eave
• DIce and water shield is only required on asphalt shingle roofs, not metal shingle roofs

What is the correct installation direction for metal shingles — and why?

• ARight to left (from rake to rake), so the wind-facing side laps are oriented away from pr…
• BLeft to right or per manufacturer specification, with each course lapping the course belo…
• CBottom to top in vertical columns, completing one column before starting the next
• DMetal shingles are always installed in a horizontal band from ridge to eave

What is the function of a drip edge at the eave of a metal shingle roof?

• AThe drip edge fastens the starter course to the fascia board
• BThe drip edge directs water off the roof edge into the gutter and prevents water from wic…
• CThe drip edge provides the required thermal expansion space at the eave
• DThe drip edge is required only on metal roofs in high-wind zones

A metal shingle manufacturer's warranty requires that no less than 1/2-inch of shingle exposure be maintained below the interlocking leg. Why?

• ATo ensure the manufacturer's logo is visible from the ground
• BTo ensure the required headlap is maintained so each point on the deck is covered by at l…
• CTo provide the correct offset for batten installation spacing
• DTo comply with the UL fire test assembly specification for headlap

How are metal shingles typically handled and stored on the job site to prevent coating damage before installation?

• ABundles may be stacked vertically, leaning against walls, for up to six months without da…
• BPanels should be stored flat, off the ground on blocks, kept dry and covered, and handled…
• CStone-coated steel panels can be stored indefinitely outdoors without protection because…
• DMetal shingles should be stored wet because moisture helps the adhesive layer on stone-co…

When a step flashing piece is installed alongside a sidewall, what is the minimum required vertical leg height on the wall side?

• A1 inch vertical leg
• B2 inches vertical leg
• C4 inches vertical leg
• D6 inches vertical leg

What is the NRCA recommendation for the minimum roof slope on which metal shingles may be installed to qualify as a steep-slope application?

• A1:12
• B2:12
• C3:12
• D4:12

An installer notices white powder forming on the surface of new galvanized steel shingles that were improperly stored on the job site in wet weather. What is this phenomenon?

• APVDF chalking, indicating premature coating degradation
• BWhite rust (wet storage stain), a zinc hydroxide/zinc carbonate corrosion product that fo…
• CEfflorescence from the concrete deck wicking through the panels
• DStone-coated granule adhesive cure residue

Which precaution is required when walking on installed metal shingles during or after installation?

• AMetal shingles are rigid and can be walked on anywhere without precautions
• BInstallers should wear soft-soled shoes and step on the lower secured portion of each pan…
• CNo foot traffic is permitted on any metal shingle after installation
• DInstallers must use the stone-coated areas only for foot placement because they provide t…

What specification differentiates a Class 4 UL 2218-rated metal shingle from a Class 1 product?

• AClass 4 products are four times thicker than Class 1 products
• BClass 4 requires no cracking or splitting from a 2-inch steel ball dropped from 20 feet;…
• CClass 4 products must withstand fire exposure for 4 hours; Class 1 must withstand only 1…
• DClass 4 denotes a product rated for wind speeds above 150 mph; Class 1 covers up to 90 mph

What is the purpose of applying a continuous bead of sealant behind the step flashing where it contacts the wall sheathing before the counter flashing is installed?

• ATo bond the step flashing permanently to the wall, replacing the need for counter flashing
• BTo create a secondary seal that prevents wind-driven rain from penetrating between the st…
• CTo allow the step flashing to slide for thermal movement without making noise
• DTo improve the aesthetic finish of the flashing at the wall junction