The chemicals would not work without tools so these are the tools to remove mold and mildew on your concrete patio.
How to keep patio floor from mold.
Keep the concrete patio clean at all times.
Mold needs food to live so removing any dirt or debris helps restrict its growth.
Please keep in mind that power washing can loosen or even remove the substrate used between patio pavers or bricks so test a small spot first.
How to remove mold on a concrete patio or other non wood patio surface power wash your patio with a 50 50 vinegar and water solution using a wide low pressure nozzle or fan tip.
The frequency of cleaning will depend on how much mold mildew or moss there is and how often it comes back.
Also do not forget to wear safety glasses mask and rubber gloves to prevent skin irritation and respiration problems.
Other times this could be done once a year for a spring cleaning every season.
Clean the patio as needed with a solution of 1 2 cup detergent per.
All you have to do is borrow technology developed hundreds of years ago by mariners.
Applications may need to be repeated for especially moldy areas.
Step 1 clean first.
In addition to keeping the seal on your outdoor stone fresh and strong you should also make it a point to keep the surfaces dry as much as possible.
You will need to give your patio a thorough cleaning before proceeding to remove the mold.
Using a dehumidifier after scrubbing away mold is highly recommended and you should avoid drying natural stone with towels.
Keep the stone dry.
How to often to clean your patio or outdoor surface.