Hoja de Referencia del Examen · Referencia Rápida
South Carolina Roofing
South Carolina · PSI Services Contractor
Verificado, no estimado. Cada cifra a continuación proviene de la estructura oficial del examen que mantenemos: número de preguntas, puntaje de aprobación y ponderación de temas. Las preguntas de práctica están fundamentadas en la ley fuente con citas de estatutos. Omitimos cualquier cifra que no podamos verificar en lugar de adivinarla.
Total de preguntas
65
Puntaje de aprobación
70%
Tiempo del examen
180 min
Administrado por
PSI Services Contractor
Formato
Se permiten materiales de referencia
Porción Estatal de South Carolina 65 preguntas
Seguridad
5 Q · 8%
Fall protection requirements for roofing work (low-slope and steep roofs)Personal fall arrest system components, criteria, and inspectionGuardrail system specifications and requirementsWarning line systems and safety monitoring systems for roofingScaffold safety requirements, capacity, and fall protectionLadder and stairway safety requirements and proper usePersonal protective equipment selection, use, and employer obligationsFire protection, fire prevention, and flammable liquid storage on job sites
Techado - Sustrato
8 Q · 12%
Types of roof deck materials (wood panels, wood planks/boards, steel, structural concrete, lightweight insulating concrete, cementitious wood fiber)Plywood and OSB panel specifications, grading standards, and minimum thickness requirements by rafter spacingRoof deck structural requirements (dead and live load support, deflection limits, fastener withdrawal resistance)Pre-installation deck inspection requirements and surface condition standardsWood deck treatment considerations (preservative-treated and fire-retardant-treated panels)Steel deck configurations, gauges, and attachment to supporting membersLightweight insulating concrete deck design, venting, drying, and curing requirementsSlope and drainage requirements for roof decks by roof system type and applicable building code minimums
Techado - Pendiente Pronunciada
22 Q · 34%
Asphalt shingle types, materials, and ratings (UL/ASTM fire and wind classifications)Steep-slope roof deck types, requirements, and minimum slopes by covering materialUnderlayment types, configurations, and selection by roof covering and slopeFlashings and construction details (valley, eave, drip edge, step, counter, cricket/saddle)Clay and concrete tile profiles, materials, attachment methods, and batten systemsSlate roofing materials, grades, sizing, exposure, and installation requirementsWood shakes and shingles: types, grades, interlayment, and application methodsMetal shingles: materials, coatings, attachment, and dissimilar metal considerations
Techado - Panel Metálico
6 Q · 9%
Architectural vs. structural metal panel roof system classifications and minimum slope requirementsMetal types and corrosion resistance (galvanized, Galvalume, aluminum, copper, stainless steel)Panel profiles, seam types, and seaming methods (standing seam, flat seam, batten seam, snap-lock)Fastener selection, compatibility, and wind-uplift attachment requirementsUnderlayment materials and installation for architectural metal panel systemsStructural substrates for metal panel roof systems (steel deck, wood panels, purlins, cold-formed framing)Flashing, closures, and construction details for ridges, eaves, rakes, valleys, and penetrationsReroofing procedures including evaluation of existing systems, re-cover vs. replacement, and building code compliance
Techado - Tapajuntas Metálicos
8 Q · 12%
Metal types and properties for flashing (aluminum, copper, galvanized steel, Galvalume, stainless steel, zinc, lead, lead-coated copper)Dissimilar metals and galvanic corrosion preventionThermal expansion and contraction of flashing metalsProtective coatings for metal flashing (fluoropolymer, anodizing, siliconized polyester, paint systems)Metal thickness and gauge requirements by flashing application and roof typeCopings, counterflashings, and perimeter edge metal for low-slope roof systemsValley metal, drip edge, gutters, and downspouts for steep-slope roof systemsWind uplift resistance and ANSI/SPRI ES-1 testing requirements for edge-metal systems
Reparaciones de Techado
4 Q · 6%
Leak detection and diagnosis methods (interior inspection, attic inspection, tracing water travel)Roof condition assessment and evaluation procedures (re-cover vs. replacement decision)Material-specific repair techniques (asphalt shingles, wood shakes/shingles, slate, tile, metal panels, membrane, SPF)Flashing repair and replacement (base flashings, counterflashings, valley flashings, penetration flashings, drip edge)Roof deck inspection and repair (wood panels, steel deck, deterioration, substrate preparation)Reroofing code requirements under SC Building Code Chapter 15 and IBC Section 1512 (re-cover limitations, layer restrictions, prohibited substrates)Moisture detection in existing roof assemblies (nondestructive methods, core cuts, infrared thermography)Storm and hail damage assessment (identifying hail impact on asphalt shingles, wood roofs, and other coverings)
Techado - Elastomérico
6 Q · 9%
EPDM membrane properties, types, and installation methods (loosely laid, fully adhered, mechanically fastened)Thermoplastic single-ply membrane types (PVC, CPE, CSPE) and seaming/welding methodsLiquid-applied elastomeric systems including silicone, urethane, and neoprene coatings and application ratesMembrane attachment and ballast systems including wind uplift design and slope limitationsFlashing details and corner flashing techniques for elastomeric membrane systemsSubstrate compatibility, primers, and slip sheet requirements for elastomeric roofingSurfacings and coatings for elastomeric membranes including reflective and protective optionsSC Building Code and IBC requirements for single-ply and membrane roof systems including fire classification and wind resistance testing
Techado - Bituminoso Multicapa
6 Q · 9%
Bitumen types and properties (asphalt types I–IV, coal-tar pitch, EVT, flash point, application temperatures)Ply sheets and base sheets (fiberglass, organic, venting base sheets, ASTM standards, lap and exposure requirements)Membrane ply configurations and application methods (two-, three-, four-ply shingle-fashion layout, back-nailing on slopes, brooming-in technique)Substrate compatibility and deck preparation by deck type (metal, concrete, wood/plywood, lightweight insulating concrete, gypsum)BUR surfacing types (aggregate flood coat, smooth glaze coat, mineral-surfaced cap sheet, application rates, code restrictions on aggregate in high-wind areas)Rigid board insulation selection and attachment for BUR assemblies (cover boards, multilayer staggered joints, compatibility with hot bitumen)Membrane and base flashings at penetrations and terminations (parapet walls, cant strips, gravel stops, counterflashing, roof drains, scuppers)SC Building Code and IBC requirements for built-up roofing (minimum slope, fire classification, wind uplift testing, material standards per IBC Section 1507.10)
Distinciones Clave
Wood Shingles (naturally durable wood)vsWood Shakes (naturally durable wood)
Wood shingles may be Grade 1, 2, or 3 per CSSB rules, while wood shakes require a minimum of Grade 1.
IBC 2021, Table 1507.8.5Nail penetration – wood plank/board deckvsNail penetration – plywood deck (<¾ inch)
Nails must penetrate at least ¾ inch into wood plank or board decks, but need only extend a minimum of ⅛ inch through the underside of plywood decks less than ¾ inch thick.
NRCA Roofing Manual: Steep Slope Roof Systems, Section 4.2—Asphalt Shingle Roof System Design and Installation (Fasteners)Positive method (roof measurement)vsNegative method (roof measurement)
The positive method divides an irregular roof into rectangles and adds their areas, while the negative method extends roof lines to form one large rectangle and subtracts non-roof areas; both yield identical results.
Roofing Construction and Estimating, Chapter 1, Pages 7-8Class A roof assemblyvsClass B roof assembly
Class A assemblies are effective against severe fire-test exposure, while Class B assemblies are effective against moderate fire-test exposure.
IBC 2021, Section 1505.2Class B roof assemblyvsClass C roof assembly
Class B assemblies withstand moderate fire-test exposure, while Class C assemblies are only effective against light fire-test exposure.
IBC 2021, Section 1505.3ASTM D7158 Class G shinglevsASTM D7158 Class H shingle
Class G shingles pass wind resistance testing at a maximum basic wind speed of 120 mph, while Class H shingles pass at up to 150 mph.
NRCA Roofing Manual: Steep Slope Roof Systems, Section 4.1—Wind Resistance (ASTM D7158)Cricket (chimney flashing)vsBacker flashing (chimney flashing)
NRCA recommends a cricket for chimneys or curbed penetrations wider than 24 inches on the upslope side, while backer flashing is generally used for penetrations 24 inches wide or less.
NRCA Roofing Manual: Steep Slope Roof Systems, Asphalt Shingle Roof Systems — Chapter 7Eave drip edge installationvsRake drip edge installation
At eaves the underlayment is installed over the drip edge, while at rakes the drip edge is installed over the underlayment.
South Carolina Building Code 2021, Section 1507.2.8.3Slate shingle deck requirementvsMetal roof panel deck requirement
Slate shingles must be fastened to a solidly sheathed deck with no exception for spaced sheathing, while metal roof panels may be applied to spaced supports if specifically designed for that purpose.
IBC 2021, Section 1507.7.1SPF new construction slopevsSPF reroofing slope
New construction SPF roof systems require a minimum slope of ¼:12, whereas reroofing SPF projects require only positive drainage rather than a prescriptive slope.
NRCA Roofing Manual: Metal Panel and SPF Roof Systems, SPF Chapter 1, Page 359ASTM D3462 (asphalt shingles)vsASTM D3018 (asphalt shingles)
ASTM D3462 covers glass-felt asphalt shingles for tear strength, fastener pull-through, and pliability, while ASTM D3018 specifically addresses Class A fire classification, wind resistance, and loss of volatile matter after heating.
NRCA Roofing Manual: Steep Slope Roof Systems, Section 4.1—Asphalt Shingle StandardsStructural metal panel vapor retardervsArchitectural metal panel vapor retarder
In structural metal panel assemblies the vapor retarder is integrated with batt insulation below the panels, while in architectural metal panel assemblies it is typically loose-laid or adhered to the roof deck or substrate.
NRCA Roofing Manual: Metal Panel and SPF Roof Systems, Page 65Términos Clave
Drip Edge Layering Sequence (SC Building Code) South Carolina Building Code 2021, Section 1507.2.8.3
Per South Carolina Building Code 2021 Section 1507.2.8.3, underlayment goes over the drip edge at eaves and the drip edge goes over the underlayment at rake edges.
Metal Roof Panel Deck Exception (SC Building Code) South Carolina Building Code 2021, Section 1507.4.1
Per South Carolina Building Code 2021 Section 1507.4.1, metal roof panels must be applied to a solid or closely fitted deck unless the covering is specifically designed for spaced supports.
Fire-Retardant-Treated Wood Process (IBC 2021 Section 1505.6) IBC 2021, Section 1505.6
Fire-retardant-treated wood shakes and shingles must be impregnated with chemicals using the full-cell vacuum-pressure process per AWPA C1.
Class A Assembly – Copper Exception (IBC 2021 Section 1505.2 Exception 3) IBC 2021, Section 1505.2, Exception 3
Copper sheets weighing a minimum of 16 oz. per square foot installed over a combustible deck qualify as a Class A roof assembly.
Class A Assembly – Slate Exception (IBC 2021 Section 1505.2 Exception 4) IBC 2021, Section 1505.2, Exception 4
Slate installed over ASTM D226 Type II underlayment on a combustible deck qualifies as a Class A roof assembly.
Slate Shingle Deck Requirement (IBC 2021 Section 1507.7.1) IBC 2021, Section 1507.7.1
Slate shingles must be fastened to solidly sheathed roofs; spaced sheathing is not permitted for slate.
Double Tongue-and-Groove Decking (IBC 2021 Section 2304.9.5.1) 2021 IBC, Section 2304.9.5.1
Three-inch and four-inch sawn tongue-and-groove roof decking must be machined with a double tongue-and-groove pattern, as opposed to two-inch decking which uses a single pattern.
Fire Classification Testing Standard (IBC 2021 Section 1505.1) IBC 2021, Section 1505.1
Class A, B, and C roof assemblies must be tested in accordance with ASTM E108 or UL 790.
Cricket NRCA Roofing Manual: Steep Slope Roof Systems, Asphalt Shingle Roof Systems — Chapter 7
A saddle-shaped roof feature installed on the upslope side of a chimney or curbed penetration wider than 24 inches to divert water around the obstruction.
ASTM D1970 NRCA Roofing Manual: Steep Slope Roof Systems, Section 3.1—Underlayment Materials
The standard specification for self-adhering polymer-modified bituminous sheet materials used as steep-slope roofing underlayment for ice dam protection, addressing thickness, tear resistance, adhesion, and low-temperature flexibility.
UL 2218 Impact Resistance Classes NRCA Roofing Manual: Steep Slope Roof Systems, Section 4.1—Impact Resistance Rating
A four-class rating system for roof covering impact resistance where Class 1 provides the least and Class 4 provides the greatest level of impact resistance.
Impermeable Synthetic Underlayment NRCA Roofing Manual: Steep Slope Roof Systems, Section 3.1—Underlayment Materials (Synthetic Sheets)
A synthetic sheet underlayment with a water vapor transmission rating of less than 0.1 perms; NRCA recommends against its use over unvented or inadequately ventilated attics.
Panel Edge Clips NRCA Roofing Manual: Steep Slope Roof Systems, Section 2.1—Wood Panels
Clips NRCA recommends using when wood panel sheathing of ½-inch nominal thickness or less is installed over supporting members spaced at 24 inches on center.
Closed-Cell SPF – Deemed-to-Comply Air Retarder (ASHRAE 90.1) NRCA Roofing Manual: Membrane Roof Systems, Page 116
Closed-cell spray polyurethane foam qualifies as a deemed-to-comply air retarder under ASHRAE 90.1 when it has a minimum density of 2.0 lbs./ft.³ and is at least 1 inch thick.