How are roof drains managed?

• A. They are left car sealed open
• B. They are left closed during operation
• C. They are removed from service
• D. They are vented to atmosphere

Answer: (A)

Roof drains are provided to remove rainwater and condensate from the roof so water does not pond there, adding weight, promoting corrosion, or creating unsafe conditions. The best practice is to keep the drain path unobstructed so water can flow out freely. If a drain were sealed shut or blocked, water would back up on the roof, increasing the risk of structural damage and other hazards. By leaving the drain effectively open (not blocking the opening with a cap or plug), drainage occurs as intended and pooling is prevented, which is why this approach is the correct management for roof drains.