Nolans Group

ALGAE/MOSS REMOVAL SERVICE

Roof Cleaning - Treatment & Sealing

We specialise in algae, moss & lichen removal treatments for roof concrete tiles & slates.

We offer two systems when treating roofs:

1. Soft Wash System: Here you will have to wait for 3- 12 months for end result.

Why use this system? This system is used for two reasons. The first one being is great for tight budgets as there are no hoists needed to carry out these works which reduce the costs. Secondly, this system is used for sensitive substrates like monocouche which is not strong enough as a material to handle steam cleaning. The system consists of pumping our unique biocide up through a large extension pole where we brush the product into the surface which kills all algae, moss & lichen. 

The downside to this system is that you have to wait up to a year for end results to allow for natural weather systems to wash the algae family from your roof.  You can expect the moss ball to blow off & the algae to turn brown & die within the first 8-12 weeks. Finally, the lichen is the last of the family to die off as it produces an acid which allows it to form tightly to the surface. The lichen will dry out after 6 months & naturally wash away over the following 6 months. 

This system has its place in our work systems as it is also very useful for treatment where hoists can not reach & it is better than doing nothing as these funguses can call a lot of damage to your roofs over time. 

2. Steam Cleaning & Treatment: For instant results.

So with this system although it is more expensive, we end up with instant results after two to three treatments to the surface. Using a hoist, we first treat the roof area with our unique biocide that kills all fungus on the roof surface.  Then after a short period of allowing the product to work, we lightly steam clean & remove the dead debris. In severe cases, we will have to carry out this process 2-3 times to order to bring back the roof surface to the way it was laid many years ago. 

The steam cleaning is carried out by way of the cherry picker and one of our skilled personnel in the cradle so in most cases, we don’t have to step on the roof. All of our staff are certified to use cherry pickers & for safety reasons, we always use a safety harness while using the cherry picker. The days of running around roofs with roof ladders and no harness are gone for good health & safety reasons. Please be cautious if a company offers to carry out the service of a cherry picker. 

After your roof has been professionally cleaned, we will review it for the following reasons: 

  1. To make sure there are no hip/ridge tiles needed to be rebedded.
  2. Check there are no loose or slip tiles on your roof.
  3. All your gutters are cleaned out & water tested where we will report any leaks.
  4. All facades & groundworks are washed down & left clean.

Tips:

  1. Asks the contractor how is your roof is going to be cleaned safely & can I see a copy of your method statement. 
  2. Does your product you are using kill all algae spores in writing? May I have a copy?
  3. If it’s a slate roof, how will it be cleaned without anybody walking on it which will break slates?
  4. Which is the best system to use for your budget in mind. 

Algae Spores? 

Algae spores are the little black dots that are usually left when you power wash the surface only without treatment. Even with some treatments, they are very difficult to remove. The spore is the root of the algae & if this is not killed and removed then algae will grow back very quickly. Lucky enough, the Nolans Group biocide kills and removes all spores. We have been asked on many occasions after loosing a job to a cheaper contractor price to return to the same job to remove these spores as inexperienced contractors did not know how to remove the same. Please be careful of cheap services as when you buy a cheap carpet, you know upfront but with this service, you will only find out in the end and then it’s too late. There is normally two types of algae found in Ireland. The first one is where the algae is green and turns black with the heat from the sun & second one is red algae which its colour is due to the pigment phycoerythrin. The red algae is little bit more difficult to remove than the black algae. The Nolans Group can look after all funguses to include algae, moss & lichen.

Sealing of Roofs

So when it comes to sealing, we have two systems to offer you.

  1. To seal the roof with our high end product that has a recoat system of 10 years. We would highly recommend considering sealing the roof following treatment because algae need two elements moisture & shade and with your roof being sealed the water will bead off your roof into your gutter system prolonging algae returning. This will also protect your roof from freeze-thaw action in winter which can crack your tiles or slate.
  2.  The second system we have to offer you is a sealer that has built in colour tint. This system acts in two ways. One to protect your roof and two it adds colour to tired and weathered looking surfaces. Please see the picture alongside.

All our sealers are permeable, transparent and impregnate the surface unlike sacrificial sealers which blister & crack with the heat of the sun.

Coillete Project HQ 

Here the Nolans Group were involved in the treatment & removal of algae /moss & lichen. This was a large project carried over many weeks where we carried out soft wash system to the rear of the building due to no hoists access & to the front we carried out instant result system. We brought back the roof surface to it’s original state lifting the whole look of the building. 

Facade Cleaning – Treatment & Sealing

We specialise in algae, moss & lichen removal treatments for facades.

We offer two systems when treating facades:

1. Soft Wash System: Here you will have to wait for 4- 12 weeks for end result.

Why use this system? This system is used for two reasons. The first one being is great for tight budgets as there are no hoists needed to carry out these works which reduce the costs. Secondly, this system is used for sensitive substrates like monocouche which is not strong enough as a material to handle steam cleaning. The system consists of pumping our unique biocide up through a large extension pole where we brush the product into the surface which kills all algae, moss & lichen. 

The downside to this system is that you have to wait up to 12 weeks for end results to allow for natural weather systems to wash the algae family from your facade.  You can expect the algae to turn brown & die within the first 1-4 weeks and as mentioned the end results will be upto 12 weeks.

This system has its place in our work systems as it is also very useful for treatment where hoists can not reach & it is better than doing nothing as these funguses can call a lot of damage to your facades over time. 

2. Steam Cleaning & Treatment: For instant results.

So with this system although it is more expensive, we end up with instant results after two to three treatments to the surface. Using a hoist, we first treat the facades area with our unique biocide that kills all fungus on the facades surfaces.  Then after a short period of allowing the product to work, we lightly steam clean & remove the dead debris. In severe cases, we will have to carry out this process 2-3 times to order to bring back the facade surface to the original build. 

The steam cleaning is carried out by way of the cherry picker and one of our skilled personnel in the cradle. So in all cases, our staff are certified to use cherry pickers & for safety reasons we always use a safety harness while using the cherry picker.

After your facade has been professionally cleaned, we will review it for the following reasons: 

  1. To make sure there are no damage to the facades.
  2. All facades & groundworks are washed down & left clean.
  3. Report any cracks in the facades to our client that may need attention.

Algae Spores? 

Algae spores are the little black dots that are usually left when you power wash the surface only without treatment. Even with some treatments, they are very difficult to remove. The spore is the root of the algae & if this is not killed and removed then algae will grow back very quickly. Lucky enough, the Nolans Group biocide kills and removes all spores. We have been asked on many occasions after loosing a job to a cheaper contractor price to return to the same job to remove these spores as inexperienced contractors did not know how to remove the same. Please be careful of cheap services as when you buy a cheap carpet, you know upfront but with this service, you will only find out in the end and then it’s too late. There is normally two types of algae found in Ireland. The first one is where the algae is green and turns black with the heat from the sun & second one is red algae which its colour is due to the pigment phycoerythrin. The red algae is little bit more difficult to remove than the black algae. The Nolans Group can look after all funguses to include algae, moss & lichen.

Sealing of Facades

So when it comes to sealing, we have two systems to offer you.

  1. To seal the facade with our high end product that has a recoat system of 10 years. We would highly recommend considering sealing the facade following treatment because algae need two elements moisture & shade and with your facade being sealed the water will bead off your facade, prolonging algae returning. This will also protect the facade from freeze-thaw action in winter which can crack your facade surface and cause a lot of damage overtime.
  2.  The second system we have to offer you is a sealer that has a five year recoat system for tighter budgets.

All our sealers are permeable, transparent and impregnate the surface unlike sacrificial sealers which blister & crack with the heat of the sun.

Please see in the video where dry brick square appears even when the wall is wet. This is the importance of sealing facades to stop water damages.

Marker Hotel – Dublin 2 

This is one of the most iconic hotel in Dublin & the Nolans Group has been trusted since the original build to clean & maintain all facades panels. 

The works that has been carried out was the cleaning of algae & pollution from the surface using the approved DOFF system. 

Once the cleaning was completed, we carried out crack repairs as per the specification to a number of panels around the hotel. After all the cleaning and repairs were completed, we then finally resealed all the facades with our unique high end sealer that is permeable, transparent & impregnating. This project was very complex given the pedestrian and motor traffic around the hotel which added to the health & safety plan of the project.

We completed this project after many months of detail & project supervision. 

The Nolans Group ar every proud to be attached to the restoration of this iconic hotel. 

Ground Works – Algae Treatment & Sealing

We specialise in algae, moss & lichen removal treatments for ground works. We carry out algae treatment on many surfaces at ground level. The process is similar to the work we carry out on the roofs and facades. The results in the pictures above speaks for themselves.

We offer two systems when treating ground works:

1. Soft Wash System: Here you will have to wait for 4- 12 weeks for end result.

Why use this system? This system is mainly used for tight budgets and use for sensitive substrates like sandstone which, is not strong enough as a material to handle steam cleaning. The system consists of pumping our unique biocide up through an extension pole where we brush the product into the surface which kills all algae, moss & lichen. 

The downside to this system is that you have to wait up to 12 weeks for end results to allow for natural weather systems to wash the algae family from your ground works.  You can expect the algae to turn brown & die within the first 1-4 weeks and as mentioned the end results will be up to 12 weeks.

2. Steam Cleaning & Treatment: For instant results.

So with this system although it is more expensive, we end up with instant results after two to three treatments to the surface. We first treat the ground works area with our unique biocide that kills all fungus on the surfaces.  Then after a short period of allowing the product to work, we lightly steam clean & remove the dead debris. In severe cases, we will have to carry out this process 2-3 times to order to bring back the  surface to it’s original state. 

After your ground works has been professionally cleaned, we will review it for the following reasons: 

  1. To make sure there are no damage to the surface.
  2. All groundworks are washed down & left clean.
  3. Report any cracks in the surface to our client that may need attention.
  4. Report any repointing that may be needed or resanding of the cobble that may be needed.

Algae Spores? 

Algae spores are the little black dots that are usually left when you power wash the surface only without treatment. Even with some treatments, they are very difficult to remove. The spore is the root of the algae & if this is not killed and removed then algae will grow back very quickly. Lucky enough, the Nolans Group biocide kills and removes all spores. We have been asked on many occasions after loosing a job to a cheaper contractor price to return to the same job to remove these spores as inexperienced contractors did not know how to remove the same. Please be careful of cheap services as when you buy a cheap carpet, you know upfront but with this service, you will only find out in the end and then it’s too late. There is normally two types of algae found in Ireland. The first one is where the algae is green and turns black with the heat from the sun & second one is red algae which its colour is due to the pigment phycoerythrin. The red algae is little bit more difficult to remove than the black algae. The Nolans Group can look after all funguses to include algae, moss & lichen.

Sealing of Ground Works

So when it comes to sealing, we have two systems to offer you.

  1. To seal the surface with our high end product that has a recoat system of 10 years. We would highly recommend considering sealing the surface following treatment because algae need two elements moisture & shade and with your ground works being sealed the water will bead off your surface, prolonging algae returning. This will also protect the surface from freeze-thaw action in winter which can crack your ground surface and cause a lot of damage overtime.
  2.  The second system we have to offer you is a sealer that has a five year recoat system for tighter budgets.

All our sealers are permeable, transparent and impregnate the surface unlike sacrificial sealers which blister & crack with the heat of the sun.

Tarmac – Sealing & Colour Tinting:

With this system, we treat and remove all algae & moss from the tarmac surface. This will leave your tarmac nice & clean. Please note, it is very important that high pressure power washing is not used on old tarmac surfaces as this will break up the surface & cause a lot of damage. We at the Nolans Group understand that the surface needs to be treated first to kill the moss and algae & once dead, we can steam clean away at low pressure without causing damage to the tarmac. Most contractors skip the treatment process and used high pressure to remove the algae which cause the damage we have spoken about. 

After the cleaning process has been completed, we have an option to apply a colour tinted sealer to the tarmac to bring back it’s natural deep colour & removes the tired & weather look. This system should be considered for two reasons. One as it brings back the deep natural colour of tarmac & two, it seals & protects your tarmac and prolongs the deterioration of the surface. 

Please see picture alongside where the tarmac has been cleaned & a portion has been sealed.

Why not contact us for a quote.