Is it illegal to climb onto the roof of a school Roof access is generally out of necessity. There is no way you can legally climb on a public building unless you have been given permission. Slipping, especially on pitched or wet roofs, can lead to serious harm. c. For example, climbing up onto a roof (you can get expelled for that) or stealing stuff. Ready to start a project? Aug 15, 2023 ยท If at all possible, never go up onto your roof alone. You could in fact face criminal charges here. For example, you could climb on the roof of your own home. For example, if a property is posted with a “No Trespassing” sign, then it would be illegal to be on the roof. In general, it is not illegal to be on a roof in New York City (NYC). zzipvduohqmvdfkbcengtbwvczdpgbgykknfjpymvlxpxwwfoqsdfuucdalnphcewcvpbcg