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,1. According to standard practice for shingle removal, how do you determine the amount
to remove?
A. Estimate by comparing existing dimensions to local averages
B. Use square footage of the roof and then add 10%
C. Estimate the exact number of squares without rounding
D. Round the total squares up to the nearest whole number
Answer: C. Estimate the exact number of squares without rounding
Expert-Verified Explanation:
• Removal calculations for shingles are based on precisely how many squares of
roofing exist (1 square = 100 square feet).
• You do not include waste or rounding for removal. It must match the actual coverage
area that needs to be taken off.
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2. Which statement best describes how to include waste and bundles when replacing
shingles?
A. Never include waste; order based on exact squares
B. For both composite and wood, use 5% waste and always round down
C. Use 10% waste for composite and 15% for wood, and round bundles up
D. Use 15% waste for composite and 10% for wood, and round bundles down
Answer: C. Use 10% waste for composite and 15% for wood, and round bundles up
Expert-Verified Explanation:
• Replacement requires factoring “waste” because shingles need trim cuts and
overlaps.
• Composite typically has ~10% waste added; wood ~15% waste.
, • After including waste, you then round up to the next whole number of bundles (3
bundles per square for composite, 4 bundles per square for wood).
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3. Wood shingle estimates always end with which fractional increments?
A. .10 or .20
B. .33 or .66
C. .25, .50, .75, or .00
D. .12 or .37
Answer: C. .25, .50, .75, or .00
Expert-Verified Explanation:
• Wood shingles often require quarter-increment coverage calculations since they
come in varied widths but must be estimated in quarter bundles or quarter squares.
• This is a customary practice in the industry to accommodate the natural variability of
wood shakes/shingles.
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4. Composite shingle estimates typically end with which fractional increments?
A. .02 or .12
B. .33, .66, or .00
C. .20, .40, .60, .80
D. .25, .50, .75
Answer: B. .33, .66, or .00
Expert-Verified Explanation:
, • Composite (asphalt/fiberglass) shingles are typically broken down in thirds because
each square is sold in 3 bundles (or sometimes 4, but each “fraction” often defaults to
.33 or .66).
• This fraction system helps reflect how many individual bundles are needed.
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5. When calculating a hip roof, what is the recommended order of measurement?
A. Triangular ends first, then main body, then extensions
B. Extensions first, then main body
C. Main body first, then extensions
D. Only measure the hip lines and multiply by four
Answer: C. Main body first, then extensions
Expert-Verified Explanation:
• A hip roof often includes a large main rectangular (or trapezoidal) area plus smaller
extensions.
• Measuring the main body ensures you capture most of the square footage, then you
carefully add extensions.
• This approach keeps you from double-counting or overlooking partial sections.
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6. Hip roof triangular ends are often accounted for automatically because:
A. The geometry includes them twice
B. The initial rectangular calculation assumes a larger area that isn’t fully triangular
C. You never measure triangles on a hip roof
D. Triangles measure themselves in Xactimate