Patio algae stains will vanish in 5 minutes when cleaned with ‘natural’ solution

Paving experts have shared their tried-and-tested natural cleaning formula to clean patios

Algae is a widespread problem on patios, caused by microscopic plant-like organisms that flourish in wet, shaded and poorly aired conditions. It typically manifests as a green, slippery coating on paving slabs, stone, or concrete, particularly after the winter months. While largely harmless, it can leave patios looking grimy, neglected and discoloured.

Keeping algae at bay requires regular maintenance, and spring represents the ideal opportunity to tackle it head-on. There are numerous removal methods available, including white vinegar and citrus-based solutions.

Paving specialists at the Reclaimed Brick Company have revealed a formula they’ve relied upon throughout their careers.

Despite taking a week to prepare, they describe it as the “best natural method” available.

Creating citrus vinegar couldn’t be simpler – collect citrus peel in a jar, submerge it in white vinegar, and leave it to steep for seven days.

Once ready, strain the mixture and dilute with additional white vinegar before application.

The experts said: “The natural citrus oils help fight algae film and leave a fresh smell. The mild acidity loosens grime without harsh chemicals.”

The pros added: “Sweep the patio first to remove loose leaves, soil and grit.

Then, pre-wet the patio with warm water. This will help the diluted spray to spread evenly.”

Test on a small area first, then apply using a spray bottle or watering can, reports the Express.

Work in sections, scrubbing with a stiff outdoor brush using short, firm strokes.

Allow five to 10 minutes for the solution to penetrate the algae before rinsing thoroughly with clean water, directing the dirty runoff away from flower beds and drains.

The specialists cautioned: “Do not mix vinegar with bleach, ammonia, or any other cleaners. Never use strong acids on limestone or very soft limestone; always test first and keep the mix mild.

“Regular cleaning prevents algae, moss and grime from building up, which can make the area slippery and shorten the life of the paving.”