Flat Roofs: Roll Roofing - Roof Coverings Flashcards
What is roll roofing commonly used for?
A) High-pitched roofs
B) Flat commercial roofs
C) Low-slope residential roofs, especially shed-roof additions
D) Tile roofs
Answer: C) Low-slope residential roofs, especially shed-roof additions
How wide is standard roll roofing?
A) 24 inches
B) 36 inches
C) 48 inches
D) 60 inches
Answer: B) 36 inches
What material is roll roofing made of?
A) Rubber
B) Fiberglass
C) Felt impregnated with asphalt or bitumen
D) Polyvinyl chloride (PVC)
Answer: C) Felt impregnated with asphalt or bitumen
What protects roll roofing from UV damage?
A) A metal coating
B) A reflective topcoat or mineral granules
C) A layer of paint
D) A rubberized underlayment
Answer: B) A reflective topcoat or mineral granules
What are the two main attachment methods for roll roofing?
A) Nailed down or torched down
B) Glued down or screwed down
C) Sealed with adhesive or mechanically fastened
D) Stitched with synthetic thread or stapled
Answer: A) Nailed down or torched down
What is a common issue with roll roofing due to insufficient slope?
A) Overheating
B) Ponding water
C) Blistering due to sun exposure
D) Loss of insulation
Answer: B) Ponding water
How can you identify where ponding water has been on a roll roof?
A) A dark stain
B) A ring of dirt
C) A wavy surface
D) Small punctures
Answer: B) A ring of dirt
How often should the top edge of single-ply roll roofing be nailed?
A) Every 12 inches
B) Every 6 inches
C) Every 3 to 4 inches
D) Every 18 inches
Answer: C) Every 3 to 4 inches
What is the typical lifespan of single-ply roll roofing?
A) 5 to 10 years
B) 15 to 20 years
C) 25 to 30 years
D) Over 30 years
Answer: A) 5 to 10 years
How does double-ply roll roofing differ from single-ply?
A) It has two layers at any point on the roof
B) It uses wider rolls
C) It is made of a different material
D) It does not require underlayment
Answer: A) It has two layers at any point on the roof
What is a common method for applying double-ply roll roofing?
A) Two layers of single-ply with staggered joints
B) Using wider rolls to cover more area
C) Overlapping the first layer by 25%
D) Sealing it with foam adhesive
Answer: A) Two layers of single-ply with staggered joints
What is the typical lifespan of double-ply roll roofing?
A) 5 to 10 years
B) 10 to 15 years
C) 20 to 25 years
D) Over 30 years
Answer: B) 10 to 15 years
What are some common defects to look for when inspecting roll roofing?
A) Torn or ripped areas
B) Lifting lap edges
C) Exposed nail heads
D) All of the above
Answer: D) All of the above
What is a sign of poor roll roofing installation?
A) Properly sealed laps
B) Even distribution of granules
C) Exposed nail heads
D) Reflective coating
Answer: C) Exposed nail heads
What causes blisters under roll roofing?
A) Overexposure to the sun
B) Moisture trapped under the covering
C) Poorly applied underlayment
D) Foot traffic
Answer: B) Moisture trapped under the covering
