Trusted by Cork Locals Professional Moss & Red Algae Removal in Cork

Moss Removal and Exterior Red Algae Treatment

I am Donal O'Sullivan, owner of Cleaning Doctor Cork. We use specialised biocide treatments to safely remove and prevent red, green, and black algae, moss, and lichen from all exterior surfaces. From Rathcormac to Carrigtwohill, we clear moss and algae and treat the surface so it stays cleaner for longer.

Kills Roots & Spores

Long-Lasting Protection

Satisfaction Guarantee

Safe for All Surfaces

087 258 1681 064 664 3966 WhatsApp Get a Quote

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↓ See Our Process

Areas I service: Blarney, Carrigtwohill, Cloyne, Coachford, Cobh, Glanmire, Little Island, Midleton, Rathcormac, Tower, Watergrasshill, Youghal

Donal O'Sullivan

Owner & Operator

Moss
Expert

Rated Excellent by Cork Locals

      EXCELLENT  
   Based on 40 reviews 
    
 
 
 
   
 
 
      Posted on Google  
   
   Gearoid Terry 
 10 days ago
 
 
 Trustindex verifies that the original source of the review is Google. Had a great experience with Donal the Cleaning doctor. He cleaned my property after an oil spill & we were very happy with the results. His crew were efficient & went above and beyond for us. Also a great communicator.
  
 
     Posted on Google  
   
   Cathriona o'Shea 
 18 days ago
 
 
 Trustindex verifies that the original source of the review is Google. If it is possible to award more than 5 stars I would. They did a top class job for us  we are very thankful and would highly recommend. Donal called out to access the job. Then  Ian and Paul power washed the whole house and footpaths.  Also the roof was treated for moss. Donal painted the chimney.  A lovely pleasant and obliging team.
  
 
     Posted on Google  
   
   Geoff Kelly 
 27 days ago
 
 
 Trustindex verifies that the original source of the review is Google. Very happy with the service provided. Communication was excellent from the start and the staff were professional, courteous and did a brilliant job. I would highly recommend this service
  
 
     Posted on Google  
   
   Daniel Buckley 
 42 days ago
 
 
 Trustindex verifies that the original source of the review is Google. Donal has been coming to clean outside my house for the 2nd year now, and the work is always immaculate. Very professional, reliable, and thorough every time. Highly recommend him and his team!
  
 
     Posted on Google  
   
   Frank Houttave 
 44 days ago
 
 
 Trustindex verifies that the original source of the review is Google. Excellent service from Cleaning Doctor. Donal and his team have been very professional, reliable and easy to deal with. The quality of the cleaning has been consistently excellent, and everything was done exactly as agreed. I’m very happy with the service and would definitely recommend Cleaning Doctor to anyone looking for a reliable and professional cleaning company.
  
 
     Posted on Google  
   
   Amelia O'Reilly 
 44 days ago
 
 
 Trustindex verifies that the original source of the review is Google. We have had the pleasure of working with Donal and the team at Cleaning Dr on a number of jobs for Croninwall Properties and we have always been extremely impressed with the results.

Donal is a pleasure to deal with. He’s professional, reliable and takes the time to explain in detail what works are required and ensures everything is completed to a very high standard.

Every job Donal and his team have completed for us has turned out exceptionally well and we wouldn’t hesitate to recommend them.
  
 
     Posted on Google  
   
   Ger Sheehan 
 46 days ago
 
 
 Trustindex verifies that the original source of the review is Google. Great service and professionalism
  
 
     Posted on Google  
   
   Dave Morrissey 
 47 days ago
 
 
 Trustindex verifies that the original source of the review is Google. 
  
 
     Posted on Facebook  
   
   Carole Conway 
 168 days ago
 
 
 recommendsTrustindex verifies that the original source of the review is Facebook. We recently had our roof, tarmac, footpaths, kerbs, and patio professionally cleaned and treated, and the results were absolutely outstanding. From start to finish, Donal and his crew were incredible to deal with.

They worked tirelessly over several days, arriving early each morning and maintaining a consistently high standard of professionalism throughout. Not only was their work ethic impressive, but they were also genuinely pleasant and easy to have around — something that really stood out.

The transformation of our outdoor areas has been remarkable. Everything looks refreshed, spotless, and well cared for. It’s clear they take great pride in what they do, and it shows in the final result.

I would highly recommend their services to anyone looking for this type of work. Wishing Donal and his team continued success — we certainly won’t be looking anywhere else in the future!
  
 
     Posted on Google  
   
   Carole O'Keeney 
 168 days ago
 
 
 Trustindex verifies that the original source of the review is Google. We recently had our roof, tarmac, footpaths, kerbs, and patio professionally cleaned and treated, and the results were absolutely outstanding. From start to finish, Donal and his crew were incredible to deal with.

They worked tirelessly over several days, arriving early each morning and maintaining a consistently high standard of professionalism throughout. Not only was their work ethic impressive, but they were also genuinely pleasant and easy to have around — something that really stood out.

The transformation of our outdoor areas has been remarkable. Everything looks refreshed, spotless, and well cared for. It’s clear they take great pride in what they do, and it shows in the final result.

I would highly recommend their services to anyone looking for this type of work. Wishing Donal and his team continued success — we certainly won’t be looking anywhere else in the future!

Award-Winning Service

See the results...

Real examples of our moss and algae removal expertise.

Our Process

The Softwash Solution

We treat the infection, not just the symptom.

1. Biocide Application

We apply a specialist biocide to the affected area. This is not just a cleaner; it's a treatment that penetrates the surface to kill the root system of moss, algae, and lichen.

Deep Penetration: Reaches the roots

Sterilisation: Kills invisible spores

2. Natural Cleansing

Once treated, the dead organic matter will weather away naturally over time with wind and rain. The surface actively resists new growth for months or even years.

Long-Term: Results improve over time

Maintenance: Fewer cleans needed

Black Spot

Removes stubborn lichen.

Red Algae

Treats unsightly wall stains.

My professional accreditations

Why Remove Moss & Algae?

The benefits of our professional biological treatments.

Prevents Damage

Moss holds water against surfaces, which can freeze and cause cracks in roof tiles, brickwork, and render.

Long Lasting Results

Our biocide treatments kill spores at the microscopic level, keeping surfaces cleaner for far longer than pressure washing alone.

Safe Soft Washing

We use low-pressure application methods that are safe for delicate surfaces like K-Rend, older roofs, and heritage stone.

Red Algae Removal

We effectively treat and remove the stubborn red streaks (Trentepohlia) often found on light-coloured walls.

Improves Safety

Algae on paths and decking is incredibly slippery. Our treatment removes this hazard, making your garden safe.

Stops Regrowth

The residual effect of our biocides continues to work after application, preventing new spores from germinating for months.

Price Promise

The price quoted includes all labour, equipment, and biocide solutions – no hidden extras. Same promise whether your home is in Little Island or the far end of our area.

Fully Insured

We carry full public liability insurance, giving you complete peace of mind while we work on your property.

Before & After

See the dramatic difference our moss and algae treatment makes. Click to zoom.

BEFORE

TREATED

Roof Moss Treatment

BEFORE

CLEAN

Driveway Moss Removal

BEFORE

RESTORED

Algae Treatment

Frequently Asked Questions

Common questions about our moss and algae treatments.

Why does moss come back after pressure washing?

Pressure washing only removes the visible growth. The spores and roots remain deep in the porous surface and quickly regrow. Our biocide treatment kills the root system, ensuring a much longer-lasting clean.

Is the treatment safe for my pets?

Yes, once the treated surface is dry, it is completely safe for pets and children. We take precautions during application to keep everyone safe.

How long does the treatment take to work?

You will see immediate results as we clean the surface, but the biocide continues to work for weeks, lightening the surface and preventing regrowth. The "self-cleaning" effect on roofs can continue for months.

Will it damage my roof tiles?

No. We use a "Soft Wash" method which relies on the cleaning product rather than high pressure. This is the recommended method for cleaning roofs as it avoids damaging the delicate surface of the tiles.

How often should I get this done?

Every surface is different and requires varying levels of maintenance with location, vegetation and climate all being a contributing factor to rate of regrowth. Ask our specially trained applicators for tailored advice relating to your specific needs.

Let's Chat

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087 258 1681

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Cork & Surrounds

Donal O'Sullivan

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Donal O'Sullivan

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Trusted by Cork Locals Professional Moss & Red Algae Removal in Cork