Roofing Chapter 3 Exam Questions
and Answers All Correct
What is the main implication of exposed felts? - Answer- Water may be wicked into the
felts
If you are looking at a single ply roof surface with a granular surface, what are some
clues to differentiate modified bitumen roll roofing? - Answer- Roll roofing often has nails
that are exposed or covered with plastic cement and or plastic cement along the seams.
Roll roofing is typically not used for flashing. Modified bitumen is more flexible than roll
roofing and will usually not break if folded. Roll roofing is usually 36" wide. Modified
bitumen roofing is usually 39" (1 meter deep) wide.
List 9 common problems you'll find on modified bitumen roofs. Dont count installation
problems - Answer- 1. Old
2. Openings at seams and flashing
3. Surface cracking
4. Loss of granules
5. Slippage
6. Blisters
7. Punctures
8. Ponding
9. Patching/ Temporary repairs.
List 6 common installation mistakes on modified bitumen roofing - Answer- 1. Seams
facing up hill
2. Inadequate overlap of seams (Less than 3")
3. End seams not staggered
4. Inadequate fastening of the membrane to the decking
5. Poor sealing at seams and flashing
6. Inadequate drainage
For and EPDM single ply roof, what is the typical flashing material? - Answer- EPDM
EPDM is a type of? - Answer- Rubber
, The most common sources of failures on EPDM roofs are _____ and Flashings -
Answer- Seams
The asphalt based roofing mastic should not be used for repairs on EPDM. Why? -
Answer- EDPM is not compatible with some asphalt products
A metal surface is a common and inexpensive way to cover large flat roofs? T/F -
Answer- False
List a least four different types of metals that have been used for flat roofing - Answer-
1. Tin
2. Terne
3. Lead
4. Zinc
- Copper
- Aluminum
- Galvanized Steel
- Stainless steel
What conditions are commonly found on EPDM? (7) - Answer- 1. Old
2. Open seams or flashing
3. Cracks
4. Patches
5. Puncture due to tenting
6. Ponding
7. Discoloration
What conditions are commonly found on PVC? (10) - Answer- 1. Old
2. Open seams
3. Surface Cracking or orange peeling
4. Punctures due to tenting
5. Ponding
6. Patching
7. Discoloration
8. Wrinkling
9. Ridging or Fish mouthing
10. Fastener Problems
11. Movement of roof projections
What conditions are commonly found on Metal? (6) - Answer- 1. Leaking
2. Rust
3. Loose Fasteners
4. Bent or damaged metal
5. Open seams
6. Failed Caulking
and Answers All Correct
What is the main implication of exposed felts? - Answer- Water may be wicked into the
felts
If you are looking at a single ply roof surface with a granular surface, what are some
clues to differentiate modified bitumen roll roofing? - Answer- Roll roofing often has nails
that are exposed or covered with plastic cement and or plastic cement along the seams.
Roll roofing is typically not used for flashing. Modified bitumen is more flexible than roll
roofing and will usually not break if folded. Roll roofing is usually 36" wide. Modified
bitumen roofing is usually 39" (1 meter deep) wide.
List 9 common problems you'll find on modified bitumen roofs. Dont count installation
problems - Answer- 1. Old
2. Openings at seams and flashing
3. Surface cracking
4. Loss of granules
5. Slippage
6. Blisters
7. Punctures
8. Ponding
9. Patching/ Temporary repairs.
List 6 common installation mistakes on modified bitumen roofing - Answer- 1. Seams
facing up hill
2. Inadequate overlap of seams (Less than 3")
3. End seams not staggered
4. Inadequate fastening of the membrane to the decking
5. Poor sealing at seams and flashing
6. Inadequate drainage
For and EPDM single ply roof, what is the typical flashing material? - Answer- EPDM
EPDM is a type of? - Answer- Rubber
, The most common sources of failures on EPDM roofs are _____ and Flashings -
Answer- Seams
The asphalt based roofing mastic should not be used for repairs on EPDM. Why? -
Answer- EDPM is not compatible with some asphalt products
A metal surface is a common and inexpensive way to cover large flat roofs? T/F -
Answer- False
List a least four different types of metals that have been used for flat roofing - Answer-
1. Tin
2. Terne
3. Lead
4. Zinc
- Copper
- Aluminum
- Galvanized Steel
- Stainless steel
What conditions are commonly found on EPDM? (7) - Answer- 1. Old
2. Open seams or flashing
3. Cracks
4. Patches
5. Puncture due to tenting
6. Ponding
7. Discoloration
What conditions are commonly found on PVC? (10) - Answer- 1. Old
2. Open seams
3. Surface Cracking or orange peeling
4. Punctures due to tenting
5. Ponding
6. Patching
7. Discoloration
8. Wrinkling
9. Ridging or Fish mouthing
10. Fastener Problems
11. Movement of roof projections
What conditions are commonly found on Metal? (6) - Answer- 1. Leaking
2. Rust
3. Loose Fasteners
4. Bent or damaged metal
5. Open seams
6. Failed Caulking
