Are bats under the roof tiles dangerous?

No, they're not dangerous to you. In fact, bats are super useful because they eat a ton of insects. The only problem might be the guano that builds up, so if that bothers you, you can contact a local wildlife organization that removes them without hurting them.

No, bats are actually your allies because they eat a ton of annoying insects 🦇 The only thing is they can make a bit of noise at night, but they won't attack you and they don't carry diseases if you don't touch them directly.