Mississippi Residential Roofer Examination

In roofing estimating, one square of roof covering is equal to which area?

• A10 square feet
• B50 square feet
• C100 square feet
• D144 square feet

Most standard asphalt strip and laminated shingles are packaged so that how many bundles cover one square?

• A2 bundles
• B3 bundles
• C4 bundles
• D5 bundles

IRC 2021 Section R905.2.4 requires asphalt shingles to comply with which material standard?

• AASTM D226
• BASTM D1970
• CASTM D3462
• DASTM E108

What is the minimum roof slope on which IRC 2021 permits asphalt shingles?

• A1 unit vertical in 12 units horizontal (1:12)
• B2 units vertical in 12 units horizontal (2:12)
• C3 units vertical in 12 units horizontal (3:12)
• D4 units vertical in 12 units horizontal (4:12)

Where an ice barrier is required, IRC 2021 Section R905.1.2 says it must extend from the lowest roof edges to a point not less than how far inside the exterior wall line?

• A12 inches
• B18 inches
• C24 inches
• D36 inches, measured only along the eave

Self-adhering polymer-modified bitumen underlayment used as an ice barrier must be labeled to which standard?

• AASTM D226 Type I
• BASTM D1970
• CASTM D4869 Type I
• DASTM D6757

Where Class A, B, or C roofing is required, IRC 2021 Section R902.1 says the covering shall be tested in accordance with which standards?

• AASTM D7158 or ASTM D3161
• BASTM E108 or UL 790
• CASTM D3462 or ASTM D3909
• DUL 2218 or FM 4473

Using common estimating coverage, one roll of No. 15 (ASTM D226 Type I) asphalt felt is taken off as covering how many squares?

• A1 square
• B2 squares
• C4 squares
• D10 squares

IRC 2021 Section R904.2 requires roof-assembly materials to be:

• AThe lowest-cost products available at the supplier
• BCompatible with each other and with the building to which they are applied
• CAll from the same manufacturer, regardless of listing
• DUnlabeled bulk materials so they can be mixed on site

On an asphalt-shingle roof with a 3:12 slope in an area where wind design is not required, how must underlayment be applied?

• AOne layer lapped 2 inches, shingle fashion from the eave
• BTwo layers: a 19-inch eave starter strip, then 36-inch sheets overlapping 19 inches
• CNo underlayment is required below 4:12
• DOne layer of 30-pound felt set vertically from rake to rake

IRC 2021 Table R905.2.4.1 classifies asphalt-shingle wind resistance primarily by testing to which standard?

• AASTM D7158 (classifications D, G, or H)
• BASTM C1167
• CASTM D226 Type II only
• DAWPA C1

IRC 2021 Section R905.2.5 requires asphalt-shingle fasteners to be corrosion-resistant roofing nails with a minimum 12-gage shank, a minimum 3/8-inch-diameter head, and a length that penetrates:

• ANot less than 1/2 inch into the sheathing, even if the sheathing is thinner than that
• BThrough the roofing materials and not less than 3/4 inch into the sheathing, or through t…
• COnly into the shingle, because the sealant strip holds the roof
• DNot less than 1-1/2 inches into a rafter, regardless of sheathing thickness

What is the minimum roof slope for mineral-surfaced roll roofing under IRC 2021 Section R905.5.2?

• A1/4:12
• B1:12
• C2:12
• D4:12

IRC 2021 requires wood shingles to be installed on slopes of at least:

• A2:12
• B2-1/2:12
• C3:12
• D4:12

What is the minimum roof slope for clay and concrete tile under IRC 2021 Section R905.3.2?

• A2:12, with single-layer underlayment
• B2-1/2:12, with double underlayment required up to 4:12
• C3:12 on spaced sheathing only
• D4:12 in all cases

Metal roof shingles shall not be installed on roof slopes below which IRC 2021 minimum?

• A1/4:12
• B1:12
• C2:12
• D3:12

What is the IRC 2021 minimum slope for a standing-seam metal roof panel system?

• A1/4 unit vertical in 12 units horizontal (1/4:12)
• B1/2:12 without lap sealant
• C2:12
• D3:12

Slate shingles shall be used only on slopes of which minimum under IRC 2021 Section R905.6.2?

• A2:12
• B3:12
• C4:12
• D8:12

IRC 2021 Section R905.11.1 requires modified-bitumen roofing to have a design slope of not less than:

• A1/8:12
• B1/4:12 (2-percent slope)
• C1:12
• D2:12

A simple gable roof has a 40 ft by 30 ft plan and a 6:12 slope. Using the 6:12 pitch factor of 1.118, what is the roof area in squares before waste?

• A12.0 squares
• B13.4 squares
• C15.0 squares
• D18.0 squares

In an area where wind design is required by IRC Figure R301.2.1.1, asphalt-shingle underlayment must be which of the following?

• AASTM D226 Type I felt, fastened only enough to hold it in place
• BASTM D226 Type II or ASTM D4869 Type III or IV, applied in two layers
• CAny unlabeled builder's paper
• DA single layer of No. 15 felt with 2-inch laps, regardless of wind

On an 8:12 roof in an ice-dam region, the ice barrier must satisfy which IRC 2021 requirement?

• AIt may stop at the exterior face of the wall because steep roofs shed ice
• BIt must reach 24 inches inside the exterior wall line and also extend not less than 36 in…
• CIt is never required on slopes of 8:12 or greater
• DIt must cover the entire roof deck, including the ridge

A hip roof has a 6:12 slope. The common-rafter run from wall to ridge is 12 ft. Using the hip/valley length factor √(rise² + 12² + 12²) ÷ 12, what is the hip length?

• A12 ft
• B13.4 ft
• C18 ft
• D24 ft

Which statement correctly distinguishes SBS and APP polymer-modified bitumen used on low-slope residential roofs?

• ASBS (styrene-butadiene-styrene) remains more flexible in cold weather and may be mopped,…
• BAPP is a thermoset rubber identical to EPDM
• CSBS can be installed only as a cold liquid coating
• DNeither product may be used below a 4:12 slope

Independent of a local ordinance that requires rated roofing, IRC 2021 Section R902.1 also requires Class A, B, or C roofing where:

• AThe building is a one-story dwelling more than 30 feet from any lot line
• BThe edge of the roof is less than 3 feet from a lot line
• CThe attic is unvented
• DThe roof slope is 2:12 or less

A 24-square roof will receive a single layer of No. 15 felt. Using the common 4-squares-per-roll coverage and adding 10 percent for laps and waste, how many rolls should be ordered?

• A6 rolls
• B7 rolls
• C12 rolls
• D24 rolls

IRC 2021 Section R904.4 requires roof-covering materials to be delivered in packages that:

• AMay have all labels removed so the installer can identify them by color
• BBear the manufacturer's identifying marks and the approved testing-agency labels required…
• CContain mixed ASTM products in one wrapper to save freight
• DAre opened and stored uncovered for 30 days before installation

Which statement about modern asphalt shingles used under IRC 2021 is correct?

• AASTM D3462 fiberglass-mat shingles are the shingles the IRC lists; organic-felt shingles…
• BOrganic-felt shingles are required on every 2:12 roof
• CAsphalt shingles may be applied over spaced 1x4 skip sheathing without a solid deck
• DShingles do not need a label if the color matches the existing roof

Impact-resistant asphalt shingles used in hail-prone markets are commonly classified to UL 2218. Class 4 means the shingle:

• APassed the most severe UL 2218 steel-ball drop used in that standard
• BHas a Class 4 fire rating under ASTM E108
• CMay be installed on a 1:12 slope without underlayment
• DDoes not need fasteners because the granules absorb impact

A takeoff shows 18.5 net squares of laminated shingles packaged 3 bundles per square. How many bundles should be ordered if you do not split a bundle?

• A19 bundles
• B37 bundles
• C55 bundles
• D56 bundles

IRC 2021 Section R905.2.1 requires asphalt shingles to be fastened to:

• ASpaced 1x4 skip sheathing at the weather exposure
• BSolidly sheathed decks
• CFurring strips over a live roof membrane
• DOpen rafters without a deck

IRC 2021 Section R905.2.6 requires asphalt strip shingles to have at least how many fasteners, unless the manufacturer requires more?

• ATwo fasteners per strip shingle
• BFour fasteners per strip shingle or two fasteners per individual shingle
• CSix fasteners per strip shingle on every roof
• DOne fastener in the center of each shingle

Where must a drip edge be provided on an asphalt-shingle roof under IRC 2021 Section R905.2.8.5?

• AAt the ridge only
• BAt eaves and rake edges
• COnly where a gutter is omitted
• DOnly on roofs steeper than 8:12

How must underlayment be sequenced with drip edge on an asphalt-shingle roof?

• AUnderlayment over the drip edge at the eaves and under the drip edge along the rakes
• BUnderlayment under the drip edge at both eaves and rakes
• CUnderlayment over the drip edge at both eaves and rakes
• DDrip edge is applied on top of the finished shingles

What is the primary purpose of an asphalt-shingle starter course at the eave?

• ATo replace the ice barrier
• BTo put a sealant strip and a full tab at the eave so the first course is sealed and the j…
• CTo increase attic ventilation
• DTo allow shingles to be installed from the ridge down

Underlayment and asphalt shingles are applied in which direction on a sloped roof?

• AFrom the ridge toward the eave so laps face upslope
• BShingle fashion, parallel to and starting from the eave, so each course laps over the cou…
• CVertically from rake to rake with no side laps
• DIn a single sheet from hip to hip

Which set of drip-edge dimensions matches IRC 2021 Section R905.2.8.5?

• A1-inch end laps, 1/8-inch drip, 1-inch deck flange, fasteners 24 inches on center
• BNot less than 2-inch end laps, drip not less than 1/4 inch below the sheathing, deck flan…
• CNo end laps, drip flush with the fascia, fasteners only at corners
• D6-inch end laps, 2-inch drip, fasteners 6 inches on center into the fascia only

IRC 2021 Section R905.2.8.3 requires base flashing against a vertical sidewall to be continuous or step flashing that is not less than:

• A2 inches high and 2 inches wide
• B4 inches high and 4 inches wide, directing water onto the roof or into the gutter
• C8 inches high and 12 inches wide in all cases
• DA bead of roof cement with no metal

An open valley lined with metal on an asphalt-shingle roof must have a lining that is not less than how wide?

• A12 inches
• B18 inches
• C24 inches
• D36 inches of exposed metal

For a closed valley (shingles covering the valley) on an asphalt-shingle roof, which lining does IRC 2021 Section R905.2.8.2 permit?

• ABare wood deck with no lining
• BOne ply of smooth roll roofing complying with ASTM D6380 and not less than 36 inches wide…
• CBuilding paper 6 inches wide
• DPolyethylene film only

IRC 2021 Section R903.2.1 requires a flashing that diverts water away from which location?

• AOnly the ridge vent
• BWhere the eave of a sloped roof intersects a vertical sidewall
• COnly interior partition walls
• DThe center of each shingle tab

Where an asphalt-shingle roof slope exceeds 21:12, IRC 2021 Section R905.2.6 requires the shingles to be installed:

• AWith only two nails per strip so they can hang
• BIn accordance with the manufacturer's approved installation instructions
• CWithout underlayment, because water sheds immediately
• DFrom the ridge down using reverse laps

IRC 2021 Section R905.2.8.1 allows asphalt-shingle base flashing to be corrosion-resistant metal at least 0.019 inch thick or:

• A15-pound felt with no mineral surface
• BMineral-surfaced roll roofing weighing not less than 77 pounds per 100 square feet
• CHousewrap
• DUnlabeled plastic flashing

Cap flashing for asphalt-shingle roof assemblies must be:

• ARoof cement only
• BCorrosion-resistant metal of minimum nominal 0.019-inch thickness
• CNo. 15 felt turned up the wall 2 inches
• DWood trim painted on all sides

A three-tab shingle with a 5-inch weather exposure is applied on a slope that measures 20 ft from eave to ridge. How many field courses are required to reach the ridge, not counting the starter?

• A20 courses
• B36 courses
• C48 courses
• D60 courses