[numberonepal]

Anon from an earlier bread today at the Forbidden City:

years ago on pol we dug on UN buildings always having blue roofs
assumption was to help bombers ID buildings to avoid
not able to find anything on blue UN buildings yet

[CJ Wolf]

Started with blue helmets

[Pete from Shawnee Mission]

If the roof is blue it is probably metal. It is more expensive than composite roofs. The Oligarchs can afford it and are more likely have them. One good reason for a metal roof is that it is less likely to catch on fire. That appears to have worked.

Here is just general information on metal roofs.

How to pick the right metal roof