The answer to 'missing flat roof' is that a missing or damaged flat roof can have several common causes, including improper installation, age and wear, and damage from weather or other external factors. Symptoms may include leaks, standing water, and deterioration of the roofing material. Solutions can range from simple repairs to full roof replacement, depending on the extent of the damage.
For minor issues, homeowners may be able to perform some DIY repairs, such as patching small holes or cracks. However, for more significant problems or if you're unsure of the cause, it's best to call in a professional roofing contractor. They can inspect the roof, identify the underlying issues, and provide the appropriate repair or replacement services.