Illinois Roofing Exam Flashcards

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Questions and Answers

How many eaves does a gable roof have?

How many rakes does a gable roof have?

Does a hip roof have any rakes?

False (B)

How many hips does a hipped roof have?

4 Signup and view all the answers

How many eaves are on a hipped roof?

4 Signup and view all the answers

What is an eave?

A projecting edge of a roof that extends beyond the supporting wall. Signup and view all the answers

What is a rake?

The sloped edge of a gable roof. Signup and view all the answers

What is a hip?

The inclined external angle formed by the two sloping sides of a hip roof. Signup and view all the answers

What is the ridge of a roof?

The highest point on the roof where two roof areas intersect. Signup and view all the answers

What does slope refer to in roofing?

The incline angle of a roof surface expressed as a ratio of the rise to the run. Signup and view all the answers

A 45 degree angle is a slope of?

12:12 Signup and view all the answers

What makes a roof assembly?

A roof deck plus the roof system. Signup and view all the answers

Which of these is NOT among the purposes of a roof deck?

Provide waterproofing and moisture control. Signup and view all the answers

Which of the following is a non-stationary load that a roof deck must support?

An installer’s mobile equipment up on the roof. Signup and view all the answers

What is the purpose of lightweight insulated concrete?

To form or fill or provide insulation. Signup and view all the answers

Which type of concrete is designed to hold weight?

Structural concrete. Signup and view all the answers

Which type of decking withholds most moisture?

OSB Signup and view all the answers

Why does the NRCA recommend replacing composite roof decks made of laminated insulation & OSB?

Their tendency to hold moisture can lead to dimensional changes and fastener back-out. Signup and view all the answers

When installing a wood deck made of boards, planks, plywood, or OSB, what is the most accurate statement?

The thickness of the wood material is based on the design loads of the building. Signup and view all the answers

Which statement most likely describes wood plank and wood panel decks?

The proper thickness of wood material is determined by the design of the loads. Signup and view all the answers

Which statement most accurately describes the best roofing systems?

A system that is matched to building specifications and characteristics. Signup and view all the answers

How should the reinforcement component of a built-up roof system be installed?

Embedded between layers of waterproofing material. Signup and view all the answers

While heating up the bitumen material in a kettle on the job site, what should you do?

Circulate the bitumen material on a regular basis while the heating is going on. Signup and view all the answers

Which of these is the best way to apply built-up roof piles in low slope roof membranes?

As a complete roof membrane in a single day. Signup and view all the answers

Which of the following serves as a weatherproofing component in single ply slope roof membranes?

Thermoset or thermoplastic membranes. Signup and view all the answers

What is the purpose of an expansion joint in low slope roofing systems?

To minimize the effects of stresses and movements in a roofing system. Signup and view all the answers

What is the minimum recommendation for placement of expansion joints in a roof assembly?

In the same location as the building's structural expansion joints. Signup and view all the answers

What is the most appropriate way to install eave edge metal in asphalt shingle roofs?

Extend over the flange. Signup and view all the answers

What is the most important performance characteristic for granules on asphalt shingles?

To protect the coating grade asphalt surface. Signup and view all the answers

Which materials are most likely to cause more rapid deterioration in roofing systems with vaulted or cathedral ceilings?

Asphalt-based components installed over insulated non-vented decks. Signup and view all the answers

What does the NRCA recommend when installing an asphalt shingle roof?

A minimum of 6 nails per shingle should be used for roofs in high wind regions. Signup and view all the answers

What is a common risk from the use of nail base insulation and its impact on steep slope roof assemblies?

Condensation or moisture accumulation. Signup and view all the answers

Study Notes

Gable and Hip Roofs

Gable roofs have 2 eaves and 4 rakes.
Hip roofs have 4 hips and 4 eaves.
Hip roofs do not have rakes.

Roof Components

Eave: Projects beyond the building wall, providing protection.
Rake: Sloped edge of a gable roof.
Hip: Inclined external angle formed by the intersection of sloping sides on a hip roof.
Ridge: Highest point on a roof where two areas meet.

Roof Slope

Slope is expressed as a ratio of rise to run in inches.
A 45-degree angle equates to a slope of 12:12.

Roof Assembly and Decking

Roof assembly consists of a roof deck and the roof system.
OSB (Oriented Strand Board) retains the most moisture among decking materials.
Structural concrete is designed for weight support, while lightweight insulated concrete is used for insulation and filling.

Decking Considerations

NRCA advises replacing laminated insulation & OSB due to moisture retention issues.
Thickness of wood decking (including boards, planks, plywood, or OSB) is determined by the building's design loads.

Roofing Systems

The best roofing systems are tailored to specific building specifications.
Reinforcement in built-up roofing should be embedded between layers of waterproofing material.

Installation Practices

Bitumen should be regularly circulated while heating in a kettle.
Applying built-up roof piles is best done in one day for low slope membranes.
Expansion joints in low slope roofing minimize stress effects and should align with structural joints.

Installation Details

Eave edge metal for asphalt shingle roofs should extend over the flange.
Granules on asphalt shingles protect the asphalt surface from deterioration.

Risks and Recommendations

Asphalt components over insulated, non-vented decks can lead to rapid deterioration.
A minimum of 6 nails per shingle is recommended for roofs in high wind regions.
Nail base insulation may increase condensation or moisture accumulation risks in steep slope roofs.

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Description

Test your knowledge on roofing terminology with these flashcards designed for the Illinois Roofing Exam. Learn about gable and hipped roofs, including eaves, rakes, and hips in a quick and effective manner. Perfect for anyone preparing for the roofing certification.