If you’ve ever looked at your once-charming home and thought, “Why does it look like it’s blushing?” Well, chances are you’ve made the acquaintance of the dreaded red algae. But not to worry, in this blog, we will explain exactly what red algae is, and the best red algae removal treatments.

The Not-So-Lovely Red Algae

Red algae, or Trentepohlia, aren’t some exotic species reserved for science labs or nature documentaries. It’s the uninvited guest taking up residence on thousands of homes across Ireland. Unlike green algae, which tend to thrive in shady, damp corners, red algae love to sunbathe. That’s right, it usually appears on south-facing walls where it has full access to sunshine, leaving walls streaked in pinkish-red hues like your house is mid-sunburn.

It might sound harmless, but make no mistake, red algae is stubborn. It clings onto render like a toddler with a new toy, and if left untreated, it can damage your paintwork, trap moisture, and encourage further biological growth. Think of it as the gateway algae. And this is why professional red algae removal is so important.

Why is Red Algae So Common in Ireland?

Ireland’s climate is the perfect holiday destination for algae: mild temperatures, plenty of rain, and generous humidity. It’s like a spa retreat for microbial growth. But red algae, in particular, seem to thrive here more than in most places. Why?

High moisture and humidity. That soft drizzle Ireland is known for? Well, unfortunately, red algae love it.

Airborne spores. Red algae travel easily by wind, so if your neighbour has it, you might be next.

South-facing rendered walls. These soak up the sun and retain moisture. The result? A lovely breeding ground for a red tinge.

It’s not dirt. It’s not just discolouration. It’s a living, multiplying organism. And if you don’t deal with it properly, it’ll be back quicker than you can say “red algae removal”.

Red Algae vs Green Algae vs Dirt: Know Your Enemy

There are many forms of unwanted stains that can accumulate on your home, but they can come from different sources. Let’s take a look at some of the more common culprits.

Red algae show up as pinkish-red streaks and love the combination of sunlight and moisture. It’s most commonly found on south-facing rendered walls and causes more than just an eyesore. Over time, it can compromise the surface by making it porous and vulnerable to further damage.

Green algae, on the other hand, tend to form green patches in shaded, damp areas. While it doesn’t stain as dramatically as red algae, it can make surfaces dangerously slippery and may lead to paint deterioration if left untreated.

Then there’s dirt. The everyday kind that blows in with the wind, sticks after a rainy day, and settles everywhere. It usually appears as brown or grey dust and is mostly just a visual nuisance. However, when mixed with moisture, it can create a breeding ground for algae and mould.

Understanding the difference is crucial. A quick pressure wash might shift a bit of dirt, but when it comes to red algae, you need more than elbow grease; you need a professional red algae removal solution that tackles the root of the problem and stops it from coming back.

The Best Red Algae Removal Solution

Here’s the truth: Professional red algae removal isn’t just about making your home look nice. It’s about protecting your property. And no one does that better than UEH Ireland Limited.

So what makes us the best at red algae removal?

1. We Use Benz Softwash – Government Approved & Ireland’s Favourite

We’re not here with a bucket and a brush. We use Benz Softwash, the safest and most effective red algae removal product approved by the Irish government. It doesn’t just wash the surface; it kills algae at the root, so it won’t return after the next rainfall.

2. Proper Application, by Professionals Who Actually Know What They’re Doing

We’re not your cousin’s bud who once cleaned a shed. UEH is a family-run business with over 30 years of experience, and we treat every home like it’s our own. We assess every property properly and give honest, tailored advice. No pushy sales pitch, just results.

3. We Stop It Coming Back With ProPERLA Wall Coatings

After cleaning, we apply ProPERLA wall coatings, the industry gold standard. These coatings are:

• Super hydrophobic (water beads off like magic)
• Breathable (no trapped moisture)
• Self-cleaning (rain does the hard work for you)
• Long-lasting (minimum 10-year guarantee & 25 year life expectancy)

That means no more red streaks. No more ugly patches. Just walls that look brand new and stay that way.

Why Choose UEH Ireland for Red Algae Removal?

Aside from our sparkling personalities and top-notch banter, we’re also:

• The ONLY ProPERLA Platinum Approved Applicator in Ireland
• Experts in wall and roof cleaning and roof moss removal (because algae loves to spread)
• Recommended by over 1,000 happy clients (check our glowing reviews on TrustATrader from our UK customers)
• Nationwide coverage from Cork to Donegal, so we’ve got Ireland covered

We don’t just remove red algae. We obliterate it. Then we give your home a protective coat of armour courtesy of ProPERLA, so it doesn’t come back.

So, whether your walls are blushing red, your roof’s sprouting moss like a thatched cottage in a fairy tale, or you’re just ready to love your home’s exterior again, get in touch with us. We’ll pop by, give you a free, honest survey, and tell you exactly what your home needs (and nothing it doesn’t).

Ready for Red Algae Removal That Works?

Contact UEH Ireland Limited today and say goodbye to red algae for good. Your walls will thank you. Your neighbours will be jealous. And your home? It’ll look better than ever.