Contractor Exam Questions And

CA D70 Roofing Maintenance Contractor Exam Questions And Correct Answers (Verified Answers) Plus Rationale2026 Q&A| Instant Download Pdf

What is the primary purpose of a roofing maintenance program?

• To install new roofing materials
• To extend the life of existing roofing
• To replace gutters
• To paint the roof

Rationale: A roofing maintenance program focuses on inspection and

preventive measures to extend the life of the roof, rather than replacement.

• Which type of roofing is most susceptible to UV damage?
• Metal roofing
• Tile roofing
• Asphalt shingles
• Slate roofing

Rationale: Asphalt shingles degrade faster under UV exposure due to

the breakdown of the asphalt binder.

• How often should a flat roof typically be inspected for maintenance?
• Once every 5 years
• Every 6 months
• Annually
• Only after storms

Rationale: Annual inspections catch early signs of leaks or

deterioration before significant damage occurs.

• What is the first step in a roof maintenance inspection?
• Replace damaged shingles 1 / 3

• Visual inspection of the roof surface
• Apply sealant
• Clean gutters

Rationale: A visual inspection identifies problem areas that require

further evaluation or maintenance.

• Which of the following is a common cause of roof leaks in low-slope

roofs?

• Improper flashing
• Ponding water
• Excessive ventilation
• Loose nails

Rationale: Low-slope roofs are prone to water accumulation, which

can lead to leaks if not drained properly.

• What is the main purpose of flashing in roofing?
• To improve aesthetics
• To reduce UV damage
• To prevent water penetration at joints and roof penetrations
• To hold insulation

Rationale: Flashing seals areas where the roof meets walls,

chimneys, or vents, preventing leaks.

• When maintaining a metal roof, which practice should be avoided?
• Cleaning debris
• Inspecting fasteners
• Using abrasive brushes
• Checking for corrosion

Rationale: Abrasive brushes can scratch and damage the protective

coating on metal roofs.

• Which maintenance activity helps prevent algae and moss growth on

shingles?

• Painting the roof
• Applying zinc or copper strips
• Installing skylights
• Adding insulation

Rationale: Metal strips release ions during rain that inhibit moss and

algae growth.

• For safety during roof maintenance, the minimum recommended slope

for safe walking without fall protection is: 2 / 3

A. 2:12

B. 3:12

C. 4:12

D. 6:12

Rationale: Slopes steeper than 6:12 require fall protection due to increased risk of slipping.

• What is the typical lifespan of a well-maintained asphalt shingle roof?
• 5–10 years
• 10–15 years
• 20–30 years
• 40–50 years

Rationale: Regular maintenance can help asphalt shingles reach

their design lifespan of 20–30 years.

• What is the main hazard associated with working on a roof with

wet surfaces?

• Tool damage
• Shingle discoloration
• Slips and falls
• Corrosion

Rationale: Wet surfaces increase the risk of slipping, making fall

protection and caution critical.

• Which type of sealant is commonly used for roof repairs?
• Epoxy putty
• Polyurethane roofing sealant
• Latex paint
• Silicone caulk for windows

Rationale: Polyurethane sealants provide flexible, waterproof

protection suitable for roofing applications.

• How should a small puncture in a single-ply membrane roof be

repaired?

• Replace the entire roof
• Patch with compatible membrane material
• Apply asphalt coating
• Cover with shingles

Rationale: Patching with compatible material ensures waterproofing

without extensive replacement.

• / 3