Questions and Answers
How many eaves does a gable roof have?
2
How many rakes does a gable roof have?
4
Does a hip roof have any rakes?
False
How many hips does a hipped roof have?
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How many eaves are on a hipped roof?
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What is an eave?
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What is a rake?
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What is a hip?
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What is the ridge of a roof?
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What does slope refer to in roofing?
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A 45 degree angle is a slope of?
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What makes a roof assembly?
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Which of these is NOT among the purposes of a roof deck?
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Which of the following is a non-stationary load that a roof deck must support?
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What is the purpose of lightweight insulated concrete?
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Which type of concrete is designed to hold weight?
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Which type of decking withholds most moisture?
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Why does the NRCA recommend replacing composite roof decks made of laminated insulation & OSB?
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When installing a wood deck made of boards, planks, plywood, or OSB, what is the most accurate statement?
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Which statement most likely describes wood plank and wood panel decks?
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Which statement most accurately describes the best roofing systems?
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How should the reinforcement component of a built-up roof system be installed?
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While heating up the bitumen material in a kettle on the job site, what should you do?
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Which of these is the best way to apply built-up roof piles in low slope roof membranes?
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Which of the following serves as a weatherproofing component in single ply slope roof membranes?
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What is the purpose of an expansion joint in low slope roofing systems?
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What is the minimum recommendation for placement of expansion joints in a roof assembly?
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What is the most appropriate way to install eave edge metal in asphalt shingle roofs?
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What is the most important performance characteristic for granules on asphalt shingles?
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Which materials are most likely to cause more rapid deterioration in roofing systems with vaulted or cathedral ceilings?
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What does the NRCA recommend when installing an asphalt shingle roof?
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What is a common risk from the use of nail base insulation and its impact on steep slope roof assemblies?
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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.