Make sure you dress appropriately for the job. It doesn't matter which cleaning solution you choose, you will stain your clothes. Be sure to wear safety glasses, rubber gloves, old clothing, and non-slip shoes. If you are climbing stairs to the roof, be sure to have a safety rope or harness with you.

Yes, indeed the moss growing under the slate and shingles can dislodge the slate, allowing rainwater to seep into the roof structure. When rain hits the roof structure, rotting and decay sets in. So I advise you to read the article , in order to remove the moss and it does not destroy your roof and in case of rain it does not leak.

Useful tips for cleaning the roof. Does anyone know how to clean the ventilation in the house? Since I have less fresh air and I think it's because the ventilation is clogged! What to do?

Except the roof. the ventilation of the house must also be kept clean. To make it easier for you to do this, I recommend that you visit this site and order there a service for cleaning ventilation in the house! This will help you achieve clean and fresh air in the house, and less dust! This is very cool!