Green algae on patios can be removed in just five minutes using a homemade solution of white vinegar and orange peel, according to home improvement experts. This natural method avoids harsh chemicals and leaves a fresh scent.
Why Algae Grows on Patios
The UK's damp spring and unpredictable summer weather create ideal conditions for algae growth. Porous surfaces like natural stone absorb moisture, allowing algae to spread quickly after heavy rain. This leaves patios green-tinged, untidy, and slippery underfoot.
The Two-Ingredient Solution
Trevor Guilday, home improvement expert and founder of EcoGen America, told The Express: “The green algae on your patio will typically respond quite well to white vinegar as the mild acid will help dissolve the algae without requiring harsher chemicals.” He recommends a mixture of equal parts white vinegar and four parts warm water as a base. For a stronger solution, soak orange peel slices in the vinegar for approximately seven days, then remove them before mixing with water.
Application Method
Guilday advises: “I recommend spraying or pouring the solution on the area. Afterward, use a hard bristled brush and brush with short, firm strokes so that the solution will be able to penetrate the algae layer. Allow it to sit on the surface for five to ten minutes, and then thoroughly rinse off with clean water.” The orange peel oil acts as a natural degreaser, stripping away the waxy coating on algae, while the vinegar's acidity kills it.
Preventing Algae Return
Michael Scott, founder of Lazy Susan Furniture, told The Express: “The key is to keep on top of things. Don't leave it too long between cleans and let muck build up.” He recommends preventative measures such as applying a patio sealer to deter dirt and algae buildup, sweeping weekly, and cleaning with soapy water monthly. Regular maintenance prevents leaves and dirt from accumulating, which can fuel algae growth.
