The answer to 'why is my flat roof curling shingles' is that curling shingles on a flat roof are often caused by poor ventilation, improper installation, or age and weathering. Curling can lead to leaks and further roof damage if not addressed.
Curling shingles are a common issue with flat roofs, especially as the roof ages. Inadequate ventilation can cause the shingles to overheat and curl, while improper installation techniques like using the wrong fasteners or not securing the edges can also lead to curling over time. Additionally, as flat roofs age, the materials can become brittle and start to curl and lift.