Pressure Washing Roof


Cleaning roof algae safely and effectively


Roof algae can be removed from your roof using a technique that’s environmentally safe and free of dangerous chemicals. It’s important to take the right precautions when cleaning roof algae, so read on for some helpful tips!

Roof algae can be a real pain to remove from your roof. Algae is very stubborn and will not give up easily, especially when it’s removed from the roof and put on the ground where it’s easily accessible for sunlight. It will quickly grow back and cause problems if you do not learn how to rid yourself of this stubborn building problem before it becomes an even bigger issue.

There are some steps you can take to ensure that your roof doesn’t become infected with algae again after you’ve rid your home of the green pest:

– Be sure not to use any toxic chemicals or pesticides as they can harm plants, animals, and other organisms in the local vicinity. These harmful toxins may even leach into our water supply and cause serious health problems in humans after a rainstorm has washed the chemicals away.

– Even though it’s tempting to use bleach to rid your roof of algae, this isn’t recommended as it can be harmful to plants and animals that live nearby. 

– If you’re still looking for a chemical solution for removing roof algae, vinegar is highly recommended as an alternative to killing off algae on contact. It won’t damage your plants or other organisms around your home either!

– Make sure the weather conditions are appropriate for spraying down roofs with vinegar before beginning; strong wind can easily move the spray and affect nearby organisms and plants.  

– Choose a sunny day for ridding your asphalt shingles of roof algae as the sunlight will help render it harmless. If you don’t have a sunny day, use a hairdryer or heat gun to activate the algaecide in your spray bottle and kill the algae on contact.

– Follow all instructions that come with your vinegar spray. Be sure to wear protective gear such as a mask and gloves for this process, as well as eye protection. Avoid getting yourself or any other living organisms near your roof wet when applying algaecides, especially during rainfall or other precipitation events.

– Once you’ve used vinegar to remove the majority of roof algae from your home’s surface, soak up any excess water using towels before rinsing with fresh water. This will ensure no chemicals remain after you’ve finished the process.

– Rinse your roof with a hose to remove any leftover residue from the algaecide as well as dirt and other particles that may have been lifted from your roof during cleanup.  

– To prevent algae from returning, coat your asphalt shingles with an oil-based sealant or asphalt cleaner after all residue has been rinsed away. This will help protect them against the future growth of water-hungry algae! Or you can apply a ridge cap on top of your asphalt shingle to stop moisture from getting in underneath the cap and causing algae to form inside its crevices.  



Nashville Roof Cleaners
1050 Glenbrook Way, Hendersonville, TN 37075
(615) 581-1581