Roofing Inspection Section#3 Flat Roofing Quiz#4

You should have finished Study Session 3 before starting this study session. This study session covers EPDM, PVC, roll roofing metal roofs, and PUF roofing. Descriptions, inspection techniques and typical conditions that you may encounter in the field are discussed in detail.

The estimated completion time is sixty minutes.

Objectives
At the end of this study session, you should be able to:

• Explain the difference between all of the flat roofing types that are typically in use.
• Differentiate between different flat roofing types.

• Question 1

  Needs Grading

  	Asphalt based roofing mastic should not be used for repairs on EPDM. Why?
  	Selected Answer: It is not compatible with EPDM Correct Answer:   EPDM is not compatible with some asphalt products. Response Feedback: [None Given]

• Question 2

  Needs Grading

  	For an EPDM single ply roof, what is the typical flashing material?
  	Selected Answer: EPDM membrane Correct Answer:   EPDM Response Feedback: [None Given]

• Question 3

  Needs Grading

  	List four different types of metal that have been used for flat roofing.
  	Selected Answer: 1. Tin 2. Terne 3. Lead 4. Zinc 5. Copper 6. Aluminum 7. Galvanized steel 8. Stainless steel Correct Answer:   - Tin - Terne - Lead - Zinc - Copper - Aluminum - Galvanized steel - Stainless steel Response Feedback: [None Given]

• Question 4

  Needs Grading

  	On a PVC roof, what could it mean if the plumbing stacks etc. are out of plumb?
  	Selected Answer: shrinkage of the membrane Correct Answer:   This could indicate shrinkage or movement of the membrane sometimes called "tenting". Response Feedback: [None Given]

• Question 5

  Needs Grading

  	The most common sources of failure on EPDM roofs are ____________ and flashings.
  	Selected Answer: seams Correct Answer:   seams Response Feedback: [None Given]

• Question 6

  Needs Grading

  	What could happen to a PVC roof if you walk on it when it is cold out (temperature below 50 degrees C).
  	Selected Answer: It could become brittle, more susceptible to rupture Correct Answer:   The PVC membrane could shatter. Response Feedback: [None Given]

• Question 7

  Needs Grading

  	What seven conditions are commonly found on EPDM roofs (excluding installation problems)?
  	Selected Answer: 1. Old 2. Openings at seams or flashings 3. Surface cracking/splitting 4. Patches 5. Punctures/tears 6. Ponding/Vegetation 7. Discoloration Correct Answer: EPDM : - Old - Open seams or flashings - Cracks - Patches (temporary repairs) - Punctures due to tenting - Ponding - Discoloration PVC: - Old - Open seams - Surface cracking or orange peeling - Punctures due to tenting - Ponding - Patching (temporary repairs) - Discoloration - Wrinkling - Ridging or fish-mouthing - Fastener problems - Movement of roof projections Metal: - Leaking - Rust - Loose fasteners - Bent or damaged metal - Open seams - Failed caulking Response Feedback: [None Given]

• Question 8

  Needs Grading

  	What six conditions are commonly found on metal roofs (excluding installation problems)?
  	Selected Answer: 1. Leaks 2. Rust 3. Loose 4. Missing fasteners 5. Bent 6. Damaged metal Correct Answer:   - Leaking - Rust - Loose fasteners - Bent or damaged metal - Open seams - Failed caulking Response Feedback: [None Given]

• Question 9

  Needs Grading

  	What ten conditions are commonly found on PVC roofs (excluding installation problems)?
  	Selected Answer: [None Given] Correct Answer: - Old - Open seams - Surface cracking or orange peeling - Punctures due to tenting - Ponding - Patching (temporary repairs) - Discoloration - Wrinkling - Ridging or fish-mouthing - Fastener problems - Movement of roof projections Response Feedback: [None Given]

• Question 10

  Needs Grading

  	Why might a PVC roof appear to be very tight? What could this imply?
  	Selected Answer: temperature. Shattering Correct Answer: Shrinkage of the membrane can make the PVC roof very tight. This could result in punctures or tears in the membrane. The roof may also be vulnerable to shattering. Response Feedback: [None Given]

• Question 11

  0 out of 0 points

  	The most common sources of failure on EPDM roofs are ____________ and flashings.
  	Selected Answer:  seams Correct Answer: Evaluation Method Correct Answer Case Sensitivity Exact Match seams

• Question 12

  0 out of 0 points

  	EPDM is a kind of:
  	Selected Answer:   Rubber Answers: Plastic   Rubber Response Feedback: Good work

• Question 13

  0 out of 0 points

  	The roofing surface that feels like the vinyl liner on a swimming pool is called:
  	Selected Answer:   PVC Answers:   PVC EPDM Response Feedback: Good work

• Question 14

  0 out of 0 points

  	True or false: A metal surface is a common and inexpensive way to cover large flat roofs.
  	Selected Answer:  False Answers: True  False Response Feedback: Good work

• Question 15

  0 out of 0 points

  	True or false: Roll roofing is considered a temporary surface.
  	Selected Answer:  True Answers:  True False Response Feedback: Good work