The short version
- New roofs can have installation defects
- Common issues include high nailing, missing flashing and poor valley work
- Defects often show only after weather
- Inspect within the builder’s warranty
Why new roofs have defects
Fast schedules, subcontractor turnover and weather can lead to rushed work. Roofing details are simple to get wrong and hard to see once finished. Even good builders have off days.
An independent inspection is a safeguard.
Common mistakes
High nailing, which weakens shingle hold, missing or reversed flashing, no kick-out flashing, poor valley construction, incorrect underlayment, exposed nails, inadequate ventilation and sloppy penetration sealing are frequent findings.
Many are invisible from the ground.
Why timing matters
Builders’ warranties are limited in time. Defects found early can be fixed at the builder’s expense. Waiting until a leak appears may complicate responsibility.
Inspect before final payment or within the first months.
How to proceed
Share the report with your builder, ask for corrections in writing and verify them afterward. Keep copies. A post-repair inspection confirms the fix.
Be polite and factual.
General information, not engineering, legal, insurance or safety advice. Roofs, policies and local requirements vary, and every roof should be judged on its own condition.
