Patio stains can be a persistent problem for homeowners, but an expert has revealed a simple kitchen ingredient that can eliminate them for good. Black lichen, which appears as stubborn black spots on paving, is notoriously difficult to remove and often withstands pressure washing.
Understanding Black Lichen
Black lichen is a resilient organism that penetrates deeply into patio surfaces, making it more stubborn than moss or algae. While pressure washing may remove visible marks, it fails to kill the underlying organisms and can damage paving.
The Expert Solution
Daniel Scholfield, owner of The Expert Gate Company, recommends using distilled white vinegar mixed with water in a 50:50 ratio. This household cleaner is the only one effective against black lichen.
Before applying, remove plant debris and dirt from the patio, then rinse with fresh water. Perform a patch test on a small area to ensure no damage or discoloration occurs.
Pour the vinegar solution over the affected area and leave it to soak for up to one hour. Scrub firmly with a stiff brush, then rinse thoroughly with clean water. Repeat the process if any dark marks remain, or increase the vinegar concentration for stubborn stains. However, avoid overusing vinegar as it may damage the patio surface.
Prevention Tips
To prevent black lichen from returning, regularly apply the vinegar and water solution to keep your paving in top condition.
