Roof Sailing Roof Repair and Replacement

Question 1

What is the first step a roofer should take when diagnosing an active roof leak?

Accepted Answer

Perform an interior inspection to trace water stains and determine the water's entry point

Answer

Immediately tear off all shingles in the wet area

Answer

Apply roofing cement over the entire suspected area

Answer

Replace the entire roof section

Question 2

Which asphalt shingle failure mode is characterized by the shingle surface cracking into a pattern resembling alligator scales?

Accepted Answer

Alligatoring (crazing)

Answer

Blistering

Answer

Cupping

Answer

Granule loss

Question 3

When performing a partial shingle replacement, at minimum how many courses of shingles above the damaged area should be inspected?

Accepted Answer

3 to 4 courses

Answer

1 course

Answer

2 courses

Answer

The entire roof

Question 4

What is the term for the wavy, distorted appearance of shingles caused by moisture trapped in the roof deck?

Accepted Answer

Buckling

Answer

Cupping

Answer

Blistering

Answer

Ridging

Question 5

Before installing a new roof over an existing layer, how many total layers of asphalt shingles are permitted on most residential roofs per building code?

Accepted Answer

2 layers maximum

Answer

1 layer only

Answer

3 layers maximum

Answer

No limit — local jurisdiction decides

Question 6

Which sealant application method is used to prevent shingle blow-off in high-wind zones during a re-roof?

Accepted Answer

Using factory-applied sealant strips and additional hand-applied dabs under each tab in starters

Answer

Applying roofing cement under each shingle tab

Answer

Increasing nail count per shingle

Answer

Using staples instead of nails