Further, it’s important to start the house washing from the roof. That is, your house should be washed from top to bottom. This way, wastewater from the roof—during cleaning—doesn’t stain parts already cleaned. Also, it’s most likely that wastewater or the cleaning solution will pour on your landscape, which is unhealthy for the landscape flora. Thus, we recommend that you sprinkle clean water on them before commencing. So, water from the cleaning won’t stick to the flora, causing them harm.