ᐅ Is it possible to add dormer windows later on a solid roof structure (aerated concrete)?

Dear and highly valued collective intelligence,

we are planning to buy a house built in 1992, which features a traditional gable roof with a solid roof structure made of aerated concrete. We are wondering whether it is possible, or feasible with reasonable effort, to retrofit dormers into the roof despite this solid construction.

I have very limited knowledge of real estate and, to be honest, apart from the sparse information I found online, I know almost nothing about a solid roof structure.

I assume that cutting into the aerated concrete on the roof slope would be very labor-intensive. I have already used the search function but unfortunately found nothing on this topic.

If anyone could share their knowledge or experience with this specific issue, I would be very grateful.

In any case, have a great Friday and a wonderful start to the weekend!

Best regards