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Red algae on rendered house walls is a familiar sight in Ireland, especially in coastal or damp regions, but how can you remove red algae from house walls effectively? Red algae give walls a blotchy, reddish tinge that spoils the look of your home and, if ignored, can even impact property value. But before you rush to hire a pressure washer or grab a bottle of bleach, there’s something you need to know: the wrong cleaning method can permanently damage your render. So, how can you remove red algae from house walls effectively AND safely? Well, grab yerself a cuppa and we’ll tell you!.
Red algae thrive in humid, damp conditions and on porous surfaces like render. It’s more than just an eyesore; it can slowly degrade your wall surface if left untreated. Many homeowners make the mistake of tackling it with harsh DIY cleaning methods, often ending up with gouged render, streaky marks, or worse, allowing moisture to get trapped inside the walls.
One of the most common DIY mistakes is using a pressure washer. While pressure washing might blast off algae initially, it can also strip away the surface layer of your render, force water deep into the wall, which can lead to damp issues, and create rough, uneven surfaces that encourage algae to return faster. So, while it looks like a quick fix, pressure washing can actually shorten the lifespan of your walls.
The best way to remove red algae from house walls is to use a gentle, non-abrasive cleaning system designed specifically for render. UEH Ireland uses a government-approved product called Benz Softwash: the industry-leading solution for safely cleaning walls without damage. It removes organic growth like algae at its root, preventing it from coming back quickly.
Once cleaned, applying a ProPERLA wall coating provides long-term protection. ProPERLA coatings are breathable, self-cleaning and hydrophobic, meaning dirt and moisture can’t penetrate the walls. And for extra peace of mind, ProPERLA comes with a 10-year warranty for all colour coatings on roofs and walls, a 10-year warranty for clear coatings on roofs, and a 20-year warranty on clear coatings for walls.
Hiring experts like us at UEH ensures the job to remove red algae from house walls is done safely and to the highest standard. We’re not just any wall cleaning company; we’re the only ProPERLA Platinum Approved Applicator in Ireland, a status awarded only to contractors who meet exceptional quality standards. This means your render isn’t just cleaned, it’s professionally protected for years to come.
While we’re known as a roof coating specialist, our expertise extends beyond just roofs. Many homeowners choose to combine wall cleaning and roof coating, creating a fully revitalised exterior that looks fantastic and is protected against moss, algae and dirt for years. If you’re comparing roof coating companies, look for one that offers the complete package, like UEH: wall cleaning, roof coatings and long-term protection.
Want to see how our gentle cleaning system and ProPERLA coatings can transform your home and remove red algae from house walls? Contact UEH today for a free, no-obligation quote and say goodbye to red algae for good. Our friendly team will guide you through the entire process, from initial inspection to the final protective coating, so you know exactly what’s being done and why. Whether your home is a cosy coastal cottage or a modern city property, we’ll bring back that just-built look without risking damage to your walls.
And remember, it’s not just about appearance; protecting your walls and roof can help preserve your home’s value and reduce future maintenance costs. With our specialist approach and industry-leading coatings, you’re investing in a cleaner, healthier and longer-lasting home exterior.
UEH Ireland Limited is a highly reputable, family-run business with over 30 years of combined experience in wall and roof cleaning and protective coatings. Based in Cork, our skilled teams operate across the whole of Ireland. All major credit and debit cards are accepted through a secure payment gateway.
We’re proud to be co-founders of the following companies (Universal Renewables LTD Group and UEH Ireland Limited)
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Please be aware of companies impersonating or falsely claiming to be associated with us. The only companies we are proudly co-founders of are Universal Eco Homes, The Roof Cleaning Experts, East Anglian Spray Foam Removal, and Paint My Roof. If you’re ever unsure, feel free to give us a call, we’ll be happy to confirm.
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