Algae Remover

You need a dedicated algae remover that tackles the problem at its root, killing the growth rather than simply displacing it.

At GK Products UK, our algae removal products are formulated to do exactly that. Whether you're dealing with a light seasonal bloom or years of accumulated green growth, our range delivers visible, lasting results on a wide variety of hard outdoor surfaces.

What Causes Green Algae on Outdoor Surfaces?

Algae thrives in damp, shaded conditions, which makes it an almost inevitable problem in the UK. North and west-facing walls, patio slabs that sit in shadow, decking that doesn't dry out quickly after rain, and driveways overhung by trees are all prime candidates for algae growth.

Left untreated, algae doesn't just look unsightly, it creates slippery, hazardous surfaces and, over time, can work its way into porous materials, making removal progressively harder.

Green algae is the most common variety on outdoor surfaces, however regionally red algae is also an unsightly problem, particularly on light through colour renders. Our products are also effective against the broader range of biological growth that tends to accompany it, including mould, mildew, and lichen. If you're searching for a mould and algae remover that handles more than just surface discolouration, you're in the right place.

Algae Removal That Lasts

The problem with many basic algae removal solutions is that they treat the symptom rather than the cause. A pressure wash will blast visible growth away, but without a chemical treatment, regrowth is typically back within weeks.

Our exterior algae removers work by killing the organisms responsible for the growth, meaning results last significantly longer than mechanical cleaning alone.

For best results, we sometimes recommend applying an algae remover before pressure washing. With many of our products, the most effective approach is to apply the treatment and allow natural cycles of sun and rain to do the rest of the work. The right approach will depend on the product and surface, full guidance is available on each product page.

Green Mould and Algae Remover for Every Surface

Our algae removal range is suitable for use on a wide variety of outdoor surfaces, including:

• Block paving and driveways: remove algae and biological staining without disrupting jointing sand
• Patios and paths: treat natural stone, concrete, and porcelain safely and effectively
• Decking: clear algae and green mould from timber without bleaching or damaging the wood
• Render and painted walls: remove algal growth from exterior render, brick, and masonry
• Fencing and garden structures: restore weathered timber and treated surfaces
• Solar panels: remove algal growth from solar panels

If you're unsure which product is right for your surface type, check the individual product pages for full guidance on dilution rates, application methods, and dwell times, or get in touch with our team directly.

Why Use a Dedicated Algae Remover?

It's tempting to reach for a general-purpose bleach or household cleaner when you spot algal growth on an outdoor surface. The problem is that these products aren't formulated for exterior use, meaning they can damage surface finishes, kill surrounding plant life, and often don't have the right active chemistry to kill algae effectively.

Our purpose-made algae remover is designed for outdoor conditions, tested on real exterior surfaces, and formulated to remain active long enough to penetrate and kill growth rather than just bleach it temporarily.

GK Products UK holds HSE Licence Number 10766, which means our biocidal products meet UK regulatory standards. You can use our algae and mould removal chemicals with confidence, knowing they've been assessed for both performance and safety.