Okay kiddo, have you ever noticed the top of a house looking dirty or like it has lots of black or green spots on it? That's because over time, things like dirt, pollen, leaves, and even mold or algae can grow on the roof.
Cleaning the roof means getting rid of all that yucky stuff so the roof can stay strong and healthy. It's like taking a bath for your house!
But cleaning the roof can be tricky and even dangerous, so it's important to have a grown-up do it or hire a professional roof cleaner. They use special equipment, like sprayers or hoses, to apply special cleaners to the roof.
These cleaners are made to get rid of all the gross stuff, but they don't hurt the roof or the plants around the house. They let the cleaner sit for a little while and then use water to rinse it off the roof.
Once the roof is all clean again, it will look much better and be protected from any damage that could have been caused by the gross stuff. It's important to keep our houses clean and healthy just like we keep our bodies clean and healthy!