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IL Roofing Contractor practice questions

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Question 1Licensing, Business Operations, and Illinois Regulatory Compliance

Which Illinois state agency administers the roofing contractor licensing program?

  1. The Illinois Department of Labor, Division of Occupational Safety
  2. The Illinois Secretary of State, Business Services Division
  3. The Illinois Department of Financial and Professional Regulation Correct answer.
  4. The Illinois Commerce Commission, Consumer Protection Bureau

Explanation

Illinois roofing contractor licenses are issued and regulated by the Illinois Department of Financial and Professional Regulation (IDFPR) under the Illinois Roofing Industry Licensing Act. IDFPR handles applications, examinations, renewals, and discipline. The other agencies perform different statutory functions.

Question 2Licensing, Business Operations, and Illinois Regulatory Compliance

Under the Illinois Roofing Industry Licensing Act, a person who contracts with homeowners to perform roofing work for compensation must do which of the following?

  1. Belong to a statewide roofing trade association
  2. Hold a valid Illinois roofing contractor license Correct answer.
  3. Carry only a local municipal permit for each job
  4. Register only with the Illinois Secretary of State

Explanation

The Act requires any person or business that contracts to perform roofing work for compensation to hold a state roofing contractor license. Local permits alone do not satisfy the state requirement.

Question 3Licensing, Business Operations, and Illinois Regulatory Compliance

Which individual is exempt from the state roofing contractor licensing requirement?

  1. A subcontractor hired by a licensed roofing company
  2. A handyman who charges for gutter and roof repairs
  3. A company that advertises roof replacement services
  4. A homeowner roofing his or her own single-family residence Correct answer.

Explanation

The Act exempts an owner-occupant performing roofing work on his or her own single-family residence. Anyone paid to roof another person's property, including subcontractors and handymen, must be licensed.

Question 4Licensing, Business Operations, and Illinois Regulatory Compliance

To form a limited liability company that will operate a roofing business in Illinois, the owners file articles of organization with which office?

  1. The Illinois Department of Financial and Professional Regulation
  2. The Illinois Secretary of State Correct answer.
  3. The county clerk of the county where the business is located
  4. The Illinois Department of Labor

Explanation

An LLC is formed under the Illinois Limited Liability Company Act by filing articles of organization with the Secretary of State. IDFPR licenses the roofing activity but does not create the business entity.

Question 5Licensing, Business Operations, and Illinois Regulatory Compliance

An Illinois roofing contractor with one full-time employee must maintain which coverage?

  1. A surety bond in place of insurance
  2. Flood insurance for the business premises
  3. Professional liability insurance only
  4. Workers' compensation insurance Correct answer.

Explanation

Illinois employers with one or more employees must secure workers' compensation insurance or qualify as a self-insurer. Roofing is high-hazard work, so coverage is a basic compliance item.

Question 6Licensing, Business Operations, and Illinois Regulatory Compliance

Under the federal OSHA standards enforced in Illinois, construction employees must be protected from falls at which height?

  1. 15 feet
  2. 6 feet Correct answer.
  3. 10 feet
  4. 4 feet

Explanation

OSHA's construction fall protection standard requires protection when employees are exposed to falls of 6 feet or more. Illinois is covered by federal OSHA rather than a state-run plan.

Question 7Licensing, Business Operations, and Illinois Regulatory Compliance

A homeowner signs a roofing contract at the kitchen table after an unsolicited sales visit. Under the Illinois Home Solicitation Sales Act, the homeowner generally may cancel within how long?

  1. 48 hours
  2. 3 business days Correct answer.
  3. 10 calendar days
  4. 24 hours

Explanation

The Home Solicitation Sales Act gives consumers three business days to cancel a contract signed in an unsolicited door-to-door sale. The seller must give written notice of the cancellation right.

Question 8Licensing, Business Operations, and Illinois Regulatory Compliance

How is Illinois sales tax generally handled when a roofing contractor buys shingles and underlayment for a residential re-roof?

  1. The contractor pays tax when buying the materials Correct answer.
  2. Tax applies only to the labor portion of the job
  3. The supplier bills the homeowner directly for the tax
  4. The contractor collects tax from the homeowner on the full contract price

Explanation

A contractor improving real property is the consumer of the materials it buys, so it pays Retailers' Occupation Tax or Use Tax to the supplier. The contractor does not collect sales tax from the homeowner on the improvement.

Question 9Licensing, Business Operations, and Illinois Regulatory Compliance

A licensed roofing contractor hires a subcontractor to install a roof. What does Illinois law require of the subcontractor?

  1. The subcontractor may work under the prime contractor's license
  2. The subcontractor needs only a local business license
  3. The subcontractor must also hold an Illinois roofing contractor license Correct answer.
  4. The subcontractor must become an employee of the prime contractor

Explanation

Subcontractors engaged in roofing contracting need their own Illinois roofing contractor license, because a license is issued to a specific licensee and cannot be lent out. Hiring an unlicensed subcontractor exposes the prime contractor to discipline.

Question 10Licensing, Business Operations, and Illinois Regulatory Compliance

Under the Illinois Home Repair and Remodeling Act, a written contract is required for residential roof repair when the amount exceeds which figure?

  1. $250
  2. $5,000
  3. $10,000
  4. $1,000 Correct answer.

Explanation

The Home Repair and Remodeling Act requires a written contract for home repair or remodeling work costing more than $1,000. The contract must be signed by the homeowner and the contractor.

Question 11Licensing, Business Operations, and Illinois Regulatory Compliance

At the time a residential roofing contract over $1,000 is signed, the contractor must give the homeowner which document?

  1. A copy of the building permit application
  2. A notarized lien waiver
  3. The Illinois 'Consumer Rights' pamphlet Correct answer.
  4. A one-year workmanship warranty

Explanation

For residential work over $1,000, the contractor must deliver the Attorney General's 'Consumer Rights' publication at the time the contract is signed. Failure to do so violates the Home Repair and Remodeling Act.

Question 12Licensing, Business Operations, and Illinois Regulatory Compliance

A roofing subcontractor wants to preserve mechanics lien rights on a private project. Within how long after completing its work must it serve written notice on the owner?

  1. 30 days
  2. 60 days
  3. 90 days Correct answer.
  4. 120 days

Explanation

Under the Mechanics Lien Act, a subcontractor must serve written notice on the owner within 90 days after completing its work to preserve lien rights. Service may be by personal delivery or certified mail.

Question 13Licensing, Business Operations, and Illinois Regulatory Compliance

A general roofing contractor has finished a private project but has not been paid. Within what period after completion must the contractor file its claim for lien?

  1. 2 months
  2. 6 months
  3. 1 year
  4. 4 months Correct answer.

Explanation

A general contractor must file its claim for lien within four months after completion of the project. Recording later than that generally forfeits the lien.

Question 14Licensing, Business Operations, and Illinois Regulatory Compliance

How must a mechanics lien notice be served on an owner to be effective?

  1. Orally to the owner's property manager
  2. In writing, by personal delivery or certified mail Correct answer.
  3. By recording it with the county clerk only
  4. By posting a notice at the job site

Explanation

A lien notice must be in writing and served on the owner by personal delivery or certified mail. Oral notice, posting, or recording alone does not satisfy the Act.

Question 15Licensing, Business Operations, and Illinois Regulatory Compliance

A roofing contractor pays a crew on 1099 forms but sets their schedules, supplies the tools, and dictates the work methods. Under the Illinois Employee Classification Act, this arrangement is best described as which of the following?

  1. Permitted if the crew signs a waiver
  2. Prohibited misclassification of employees as independent contractors Correct answer.
  3. Prohibited price fixing
  4. Permitted because roofing work is seasonal

Explanation

The Illinois Employee Classification Act bars construction contractors from treating employees as independent contractors. Control over schedules, tools, and methods indicates employee status regardless of a 1099 filing.

Question 16Licensing, Business Operations, and Illinois Regulatory Compliance

Which project triggers the Illinois Prevailing Wage Act?

  1. A municipal library roof replacement Correct answer.
  2. A church roof paid for with private donations
  3. A commercial warehouse re-roof
  4. A private homeowner's roof replacement

Explanation

The Prevailing Wage Act applies to construction work on public works, such as a municipal building paid for with public funds. Contractors must pay prevailing wages and submit certified payrolls.

Question 17Licensing, Business Operations, and Illinois Regulatory Compliance

A roofing contractor holds a state license and wants to work in a city that requires its own roofer registration. Which statement is accurate?

  1. The contractor must also meet the city's licensing requirement Correct answer.
  2. The state license exempts the contractor from all local rules
  3. The city may not regulate roofing at all
  4. The contractor may ignore the city if the job is small

Explanation

Illinois law does not preempt local licensing of roofing contractors, so a contractor must satisfy both state and municipal requirements. Some cities impose their own registration or license rules.

Question 18Licensing, Business Operations, and Illinois Regulatory Compliance

A sole proprietor roofing contractor wants to operate under the name 'Prairie State Roofing.' Where is that assumed name registered?

  1. The local building department
  2. The Illinois Department of Financial and Professional Regulation
  3. The Illinois Secretary of State
  4. The county clerk Correct answer.

Explanation

A sole proprietor using an assumed business name files an assumed-name certificate with the county clerk. Corporations and LLCs file assumed-name registrations with the Secretary of State instead.

Question 19Licensing, Business Operations, and Illinois Regulatory Compliance

A roofer advertises 'licensed and insured' but holds no state license. How is this conduct best characterized?

  1. Acceptable sales puffery
  2. Permitted if the advertisement is removed promptly
  3. A violation of the Illinois Consumer Fraud and Deceptive Business Practices Act Correct answer.
  4. A violation only if a customer complains

Explanation

Advertising licensure that the contractor does not hold is a deceptive practice under the Illinois Consumer Fraud and Deceptive Business Practices Act. It may also violate the roofing licensing statute.

Question 20Licensing, Business Operations, and Illinois Regulatory Compliance

A new roofing company hires its first employee. Which state agency must the company register with for unemployment insurance?

  1. Illinois Department of Employment Security Correct answer.
  2. Illinois Department of Revenue
  3. Illinois Commerce Commission
  4. Illinois Secretary of State

Explanation

New employers register with the Illinois Department of Employment Security and pay unemployment insurance contributions. The Department of Revenue administers other taxes.

Question 21Licensing, Business Operations, and Illinois Regulatory Compliance

A homeowner hires an unlicensed roofer, the roof is installed, and the homeowner then refuses to pay. What is the most likely outcome in an Illinois court?

  1. The contractor recovers the full price because the work was completed
  2. The homeowner must pay treble damages to the contractor
  3. The contract is unenforceable because the contractor was not licensed Correct answer.
  4. The contractor may recover the value of materials only

Explanation

Illinois courts have declined to enforce roofing contracts made by unlicensed contractors because licensing protects the public. The contractor generally cannot recover the contract price even though the work was performed.

Question 22Licensing, Business Operations, and Illinois Regulatory Compliance

Which of the following is a ground for discipline against a licensed roofing contractor?

  1. Advertising in a local newspaper
  2. Aiding an unlicensed person in performing roofing work Correct answer.
  3. Subcontracting work to another licensed roofing contractor
  4. Notifying IDFPR of a change in business address

Explanation

Grounds for discipline under the Roofing Industry Licensing Act include aiding or abetting an unlicensed person to perform roofing work. The other listed actions are lawful business conduct.

Question 23Licensing, Business Operations, and Illinois Regulatory Compliance

Before paying a general roofing contractor on a private job, an owner may demand which document to guard against hidden subcontractor liens?

  1. A notarized promise that no lien will ever be filed
  2. A letter of credit from the contractor's bank
  3. A sworn statement listing all subcontractors and material suppliers Correct answer.
  4. The contractor's personal income tax returns

Explanation

The Mechanics Lien Act lets an owner demand a sworn statement of the contractor identifying all subcontractors and material suppliers and the amounts owed. Paying after receiving it helps protect the owner from unknown lien claims.

Question 24Licensing, Business Operations, and Illinois Regulatory Compliance

On a prevailing-wage public project, the roofing contractor must do which of the following?

  1. Post the payroll at the union hall
  2. Pay only the federal minimum wage
  3. File the payroll only with IDFPR
  4. Submit certified payroll records to the public body Correct answer.

Explanation

The Prevailing Wage Act requires contractors on public works to pay prevailing wages and submit certified payroll records to the awarding public body. The records must be available for inspection.

Question 25Licensing, Business Operations, and Illinois Regulatory Compliance

What is the role of the qualifying party on an Illinois roofing contractor license?

  1. Passing the licensing exam and being responsible for roofing operations Correct answer.
  2. Holding at least 51 percent ownership of the business
  3. Providing the surety bond for the company
  4. Signing every contract on behalf of the company

Explanation

The qualifying party is the individual who meets the experience requirement, passes the licensing examination, and is responsible for the licensee's roofing operations. The license depends on that person remaining qualified.

Question 26Licensing, Business Operations, and Illinois Regulatory Compliance

Which Illinois agency is responsible for issuing and regulating roofing contractor licenses?

  1. Illinois Department of Employment Security, Division of Unemployment Insurance
  2. Illinois Department of Financial and Professional Regulation Correct answer.
  3. Illinois Department of Labor, Division of Occupational Safety and Health
  4. Illinois Secretary of State, Business Services Division

Explanation

The Illinois Roofing Industry Licensing Act places licensing and discipline of roofing contractors with the Illinois Department of Financial and Professional Regulation. That agency issues, renews, and disciplines roofing contractor licenses.

Question 27Licensing, Business Operations, and Illinois Regulatory Compliance

Under Illinois law, which person must hold a state roofing contractor license?

  1. Only roofers who have more than five years of experience
  2. Only the job-site supervisor for each crew
  3. The roofing business that contracts with the property owner Correct answer.
  4. Each individual roofer employed by a roofing company

Explanation

The license is issued to the roofing contractor business, not to each employee roofer. Employees may perform roofing work under the licensed contractor's authority.

Question 28Licensing, Business Operations, and Illinois Regulatory Compliance

A roofing contractor wants to form a limited liability company to operate the business in Illinois. Where must the articles of organization be filed?

  1. With the Illinois Department of Labor
  2. With the Illinois Secretary of State Correct answer.
  3. With the county clerk in the county where the office is located
  4. With the Illinois Department of Financial and Professional Regulation

Explanation

An LLC is formed under the Illinois Limited Liability Company Act by filing articles of organization with the Secretary of State. A roofing license is separate and is obtained from the Department of Financial and Professional Regulation.

Question 29Licensing, Business Operations, and Illinois Regulatory Compliance

An employee of a roofing contractor is injured on a job site and files a workers' compensation claim. Which Illinois body adjudicates that claim?

  1. Illinois Department of Financial and Professional Regulation
  2. Illinois Department of Labor
  3. Illinois Workers' Compensation Commission Correct answer.
  4. Illinois Occupational Safety and Health Administration

Explanation

The Illinois Workers' Compensation Commission is the state body that adjudicates workers' compensation claims. Workplace safety enforcement and contractor licensing are handled by other agencies.

Question 30Licensing, Business Operations, and Illinois Regulatory Compliance

A contractor holds an Illinois residential roofing contractor license and submits a bid to install a roof on a commercial retail building. What must the contractor do?

  1. Proceed because a residential license covers all roofing work in Illinois
  2. Obtain a commercial roofing license before contracting for the work Correct answer.
  3. Subcontract the entire job to an unlicensed commercial crew
  4. Ask the local building inspector to waive the state license requirement

Explanation

Illinois issues residential and commercial roofing contractor licenses as separate categories. A residential licensee may not contract for commercial roofing without the commercial license.

Question 31Licensing, Business Operations, and Illinois Regulatory Compliance

A roofing contractor holds a valid Illinois state license and is hired to replace a roof in a municipality that requires building permits. Which statement is correct?

  1. The state license eliminates the need for any local building permit
  2. The contractor must still obtain required local permits and inspections Correct answer.
  3. The contractor may skip permits because roofing is a licensed trade
  4. Only the homeowner is responsible for obtaining the permit

Explanation

A state roofing license authorizes the business to operate but does not replace local building permits or inspections. The contractor must comply with the local code authority.

Question 32Licensing, Business Operations, and Illinois Regulatory Compliance

A licensed roofing contractor allows an unlicensed acquaintance to use the contractor's license number to submit bids in exchange for a fee. How is this conduct treated under Illinois law?

  1. It is allowed if the licensee supervises the job site
  2. It is prohibited and may subject the licensee to discipline Correct answer.
  3. It is allowed for residential work but not commercial work
  4. It is allowed if the acquaintance carries liability insurance

Explanation

A roofing license is issued to a specific licensee and may not be lent, rented, or used by an unlicensed person. Doing so is a prohibited practice and grounds for discipline.

Question 33Licensing, Business Operations, and Illinois Regulatory Compliance

A roofing contractor sells its business, including its name and customer list, to another person. What happens to the seller's Illinois roofing contractor license?

  1. It transfers if the buyer pays a transfer fee to the Department
  2. It remains with the seller and can be used by the buyer as a branch license
  3. It does not transfer; the buyer must obtain its own license Correct answer.
  4. It automatically transfers to the buyer with the business assets

Explanation

A roofing contractor license is not a transferable asset; it is issued based on the qualifications of the specific applicant. The buyer must apply for and obtain its own license.

Question 34Licensing, Business Operations, and Illinois Regulatory Compliance

Which requirement applies to a licensed Illinois roofing contractor regarding liability insurance?

  1. Carry insurance only after the contractor has hired five or more employees
  2. Self-insure without providing any proof of coverage to the Department
  3. Carry insurance only when the contractor performs commercial roofing work
  4. Maintain required insurance and file proof with the Department Correct answer.

Explanation

The Act requires a roofing contractor to maintain the required liability insurance and to provide proof of coverage to the Department. Allowing coverage to lapse can affect the license.

Question 35Licensing, Business Operations, and Illinois Regulatory Compliance

A homeowner personally replaces the roof on the single-family house that the homeowner occupies. Does Illinois roofing contractor licensing law require a license for this work?

  1. Yes, unless the homeowner obtains a local permit first
  2. Yes, because all roofing work in Illinois requires a state license
  3. No, because the homeowner is not engaged in the business of roofing Correct answer.
  4. No, but only if the homeowner uses professional-grade materials

Explanation

Licensing applies to persons engaged in the business of roofing. A homeowner performing work on the homeowner's own occupied residence is not acting as a roofing contractor.

Question 36Licensing, Business Operations, and Illinois Regulatory Compliance

To perfect a mechanics lien on a private roofing project in Illinois, where is the lien claim recorded?

  1. With the Illinois Secretary of State
  2. With the county recorder in the county where the property is located Correct answer.
  3. With the Illinois Department of Financial and Professional Regulation
  4. With the circuit court clerk in the county where the project is located

Explanation

A mechanics lien claim is recorded in the office of the county recorder for the county where the improved property is located. Recording with a court or state agency does not perfect the lien.

Question 37Licensing, Business Operations, and Illinois Regulatory Compliance

Under the Illinois Home Repair and Remodeling Act, what must a roofing contractor do with the written contract for a covered residential roof repair?

  1. Send a copy to the Illinois Attorney General within ten days
  2. File a copy with the local building department before starting work
  3. Give the homeowner a copy of the signed contract Correct answer.
  4. Keep the only copy in the company office until the job is complete

Explanation

The Home Repair and Remodeling Act requires a written contract for covered residential work and requires that the homeowner receive a copy. The copy is not filed with a government agency.

Question 38Licensing, Business Operations, and Illinois Regulatory Compliance

A roofing subcontractor completes work on a new public school building and is not paid. What is the subcontractor's primary remedy for payment under Illinois law?

  1. File a lien claim with the Illinois Department of Financial and Professional Regulation
  2. Foreclose a mechanics lien against the school district's real estate
  3. Record a mechanics lien against the public school building
  4. Make a claim against the payment bond required for the public project Correct answer.

Explanation

Mechanics lien rights generally do not attach to public property. On public construction, unpaid subcontractors look to the payment bond for recovery.

Question 39Licensing, Business Operations, and Illinois Regulatory Compliance

A roofing contractor operates as a sole proprietor and has no employees. Which statement about Illinois workers' compensation insurance is correct?

  1. The sole proprietor must carry workers' compensation insurance for himself or herself
  2. The sole proprietor is not required to carry workers' compensation coverage Correct answer.
  3. The sole proprietor must carry coverage because roofing is a hazardous trade
  4. The sole proprietor must carry coverage only if annual revenue exceeds $100,000

Explanation

Illinois workers' compensation requirements apply to employers with employees. A sole proprietor with no employees is not required to carry coverage for himself or herself, though coverage may be elected.

Question 40Licensing, Business Operations, and Illinois Regulatory Compliance

A roofing contractor contracts with a commercial tenant to replace the roof on the leased building. The tenant did not have written authority from the building owner. What is the contractor's mechanics lien right?

  1. The contractor has no lien rights of any kind against the property
  2. The contractor may lien the entire property because the roof benefits the owner
  3. The contractor may lien the owner's fee interest if the work was necessary to prevent leakage
  4. The contractor may lien the tenant's leasehold interest but not the owner's fee Correct answer.

Explanation

A contractor who contracts with a tenant generally obtains lien rights only against the tenant's leasehold interest. A lien against the owner's fee interest requires the owner's authorization or consent.

Question 41Estimating, Plans, Specifications, and Contracting

In roofing estimating, one 'square' of roof area is equal to how many square feet?

  1. Ten square feet
  2. Thirty-two square feet
  3. One hundred square feet Correct answer.
  4. One thousand square feet

Explanation

Roofing quantities are measured in squares, and one square equals 100 square feet of roof surface. Shingle bundles, underlayment rolls, and labor rates are all normally quoted per square.

Question 42Estimating, Plans, Specifications, and Contracting

Standard three-tab asphalt shingles are typically packaged so that one square of roof requires how many bundles?

  1. Four bundles
  2. Three bundles Correct answer.
  3. Two bundles
  4. Five bundles

Explanation

A standard three-tab bundle covers about 33.3 square feet, so three bundles make one square of 100 square feet. Heavier architectural shingles may need four or more bundles per square, which is why the estimator checks the bundle coverage printed on the wrapper.

Question 43Estimating, Plans, Specifications, and Contracting

A roof plan is drawn at a scale of 1/4 inch equals 1 foot. A roof edge measures 3 inches on the drawing. What is its actual length?

  1. 12 feet Correct answer.
  2. 6 feet
  3. 4 feet
  4. 24 feet

Explanation

At 1/4 inch per foot, each quarter inch on the paper represents one foot. Dividing 3 inches by 0.25 inch per foot gives 12 feet.

Question 44Estimating, Plans, Specifications, and Contracting

Which contract type obligates the contractor to complete the entire defined scope for a single stated price, regardless of what the work actually costs?

  1. Unit-price contract
  2. Time-and-materials contract
  3. Lump-sum contract Correct answer.
  4. Cost-plus-a-fee contract

Explanation

A lump-sum, or fixed-price, contract sets one price for the full scope, so the contractor absorbs any cost overrun. Cost-based and unit-price arrangements shift or share that risk differently.

Question 45Estimating, Plans, Specifications, and Contracting

A waste factor in a roofing estimate is added to cover:

  1. Sales tax on materials
  2. Permit and inspection fees
  3. Cutting waste and breakage Correct answer.
  4. Contractor overhead and profit

Explanation

Waste covers material that is purchased but cannot be installed, such as cutoffs at hips, valleys, and edges, plus damaged pieces. Overhead, profit, taxes, and permits are separate line items, not waste.

Question 46Estimating, Plans, Specifications, and Contracting

Before tearing off an existing roof on a house, an Illinois roofing contractor should normally first:

  1. Obtain the required local building permit Correct answer.
  2. Record a mechanics lien with the county clerk
  3. Hire a licensed engineer to inspect the deck
  4. Notify the utility company before tear-off

Explanation

Local building departments require a permit for reroofing, and inspections are typically made at deck and final stages. Working without the permit exposes the contractor to stop-work orders and fines.

Question 47Estimating, Plans, Specifications, and Contracting

Why does an estimator apply a slope factor to a roof area measured in plan view?

  1. Waste from field cutting rises with roof slope
  2. Shingle bundles are heavier when the roof is steep
  3. Slope increases the actual roof surface area Correct answer.
  4. Underlayment must be overlapped more on steep roofs

Explanation

Plan dimensions give only the horizontal projection of the roof. The sloped surface is longer than its footprint, so a multiplier derived from the pitch converts plan area to actual surface area.

Question 48Estimating, Plans, Specifications, and Contracting

In the CSI MasterFormat system used for specifications, roofing materials and assemblies fall under which division number?

  1. Division 03
  2. Division 09
  3. Division 31
  4. Division 07 Correct answer.

Explanation

Division 07, Thermal and Moisture Protection, covers roofing, waterproofing, flashing, and related envelope work. Estimators use the division numbers to locate the sections that govern their scope.

Question 49Estimating, Plans, Specifications, and Contracting

A roof measures 40 feet by 30 feet in plan view and has a 6/12 slope. Using a slope factor of 1.118, how many squares of roof area are there before any waste allowance?

  1. 12.0 squares
  2. 14.4 squares
  3. 15.0 squares
  4. 13.4 squares Correct answer.

Explanation

The plan area is 40 times 30, or 1,200 square feet. Multiplying by the 6/12 slope factor gives about 1,342 square feet, which is 13.4 squares.

Question 50Estimating, Plans, Specifications, and Contracting

A takeoff shows 18 squares of shingles required for the field area. With a 10 percent waste allowance, how many squares should be ordered?

  1. 18 squares
  2. 20 squares Correct answer.
  3. 24 squares
  4. 22 squares

Explanation

Eighteen squares multiplied by 1.10 equals 19.8 squares, which must be rounded up to the next whole square for ordering, giving 20 squares. Ordering a full square allows for breakage and layout cuts.