ᐅ Roof Cleaning: When and By Whom?

Hello,

we have been proud owners of a single-family house for just under a year now and are wondering when and how exactly one should take care of roof cleaning. Is it something you can do yourself, or is it better to hire a professional?

What exactly do you want to clean there? And what kind of roof are you talking about?

I only know of roof cleanings after 30 years 😉

... and I join toxicmolotow's question!