Whats On My Render

Do you have Red, Green or Black marks on your render? We can make it look like new

We guarantee that our Render Renewal solution will effectively erase all unsightly red, green, or black marks from your rendered walls. With our unique formula and innovative application process, your walls will be transformed to their original pristine condition

Algae-Cyanobacteria

Phototrophic Microorganisms

Phototrophic microorganisms (algae, cyanobacteria) can grow on stone surfaces or may penetrate the pore system of the stone itself. Phototrophic microorganisms have a direct effect on the deterioration of stone due to their pigments which cause an aesthetically detrimental effect.

Filamentous Cyanobacteria

Filamentous cyanobacteria (Nostoc sp, Leptolyngbia sp., Stigonema ocellatum) and green algae (Desmococcus olivaceus and Haemaotococcus pluvialis) are capable of forming dense mucous-like layers on surfaces which produce characteristic colourations on the substrata.

Blackish-Green Pigmentation

Nostoc. sp can produce blackish-green pigmentation which leaches into the substrate on which it is growing. The algal species Desmococcus olivaceus produces bright green colouration of buildings as shown below.

Biofilm

A Biofilm forms when certain microorganisms adhere to a surface in a moist environment and begin to reproduce.Biofilm formation on surfaces usually starts with phototrophic organisms (algae, cyanobacteria) which use carbon dioxide (CO2) from the atmosphere and sunlight as their carbon and energy source.

Heterotrophic organisms (most bacteria and all fungi) need some organic source for their growth, and this is provided by the metabolites of phototrophic organisms or by airborne deposition. The biofilm community is therefore sometimes formed by a single microbial species, but in nature biofilms almost always consist of mixtures of many species of bacteria, as well as fungi, algae, yeasts, protozoa, and other microorganisms, along with non-living debris and corrosion products.

All biofilm forming microorganisms may cause biodeterioration and degrade stone or render mechanically, chemically and aesthetically through the metabolic activities and biomineralization process in these biofilms.

K-rend cleaning

If you have Black, Red or Green algae growing on your render we can help. To improve our K-rend render cleaning service we studied the science behind algae and mould growth. This study has given us a far greater insight and understanding of what is causing your render to discolour or why algae grows on it. Our in-house team have developed specialist treatments and equipment to ensure that we can deep clean your render, so it remains in the best physical condition and free from both organic growths and any discolouration.

We have seen the damage caused to clients property when they have employed cleaning contractors that don’t understand the techniques used to clean this delicate surface. The use of harsh chemicals in rapidly becoming commonplace in the industry, whilst these offer a “quick” fix the effects of damage caused last a lot longer.

How do we get the best cleaning results?

Softwash render cleaning

Render is widely used across the UK. Although the lifespan of render is between 20 to 40 years, if not cleaned regularly, the color of the render will appear to fade. This is due to the fact that over the period of time, render gets infected with algae, moss and lichens etc, thus it ruins the appearance of the building. We provide a professional cost-effective Softwashing render cleaning Service. From industrial warehouses to modern office blocks; from housing estates to small, privately-owned apartments. Cleaning Service Ltd offer a cost-effective solution to your K-rend render cleaning issues. We will carry out work to a high professional standard, and the property owner will avoid both the effort of a labour-intensive job and the potential risk of injury.

If you have a K-rend render cleaning project give us a call and we can give you a free consultation to talk you through the process and give you expert advice. Tel 08000933267 or use our contact form below.

For more information, about our K-rend render cleaning service feel free to contact us. Calls are not charged, and we’re always happy to discuss the ways in which our cleaning services can benefit you, whatever your requirements.

Certified K-render Cleaners

Whether you need a full clean of your building’s exterior render or localised clean please feel free to contact us. We offer free advice no obligation advice on all matters pertaining to the cleaning of render. We also can provide structured maintenance plans that when implemented correctly will preserve the render, reducing the cost of maintaining it.

If you would like to discuss the ways in which our render cleaning service can benefit your business or commercial property, please call Cleaning Service Ltd for free. We will be happy to give you a no-obligation quote or free advice. You can also fill out our form below, so please feel free to contact us.

Moss & Lichen

Phototrophic Microorganisms

Botanically, mosses are non-vascular plants in the land plant division Bryophyta. They require sufficient moisture, access to nutrients and harvest sunlight to create food by photosynthesis. There are approximately 14,500 species of mosses. The most common species in urban Ireland are the greycushioned grimmia, Grimmia pulvinata; thickpoint grimmia, Schistidium crassipilum; and the wall screwmoss Tortula muralis.

Filamentous Cyanobacteria

Although mosses do not cause direct damage to roof tiles, they increase water capillary creep causing in the fullness of time corrosion of the fixings and ageing of the overall structure. They can cause some lifting when growing in the vertical bond. As they absorb moisture, they also add weight to roofs and when they become heavy enough or dislodged by bird activity etc, they can fall in gutters and down pipes and cause blockages.

Blackish-Green Pigmentation

On the ground the deleterious effects of mosses is slower to take effects,except on artificial grass, where they rapidly clog the drainage leading to runaway maintenance issues. It is recommended to clear moss before treatment. This is done by hand on roofs, or mechanical brushing on the ground, particularly on artificial grass. AlgoClear® Pro being deactivated in contact with biomass, it makes good sense to reduce it’s volume before applying the biocide.

Moss are part of the Bryophytes and, unlike plants have no vascular tissue and reproduce by the production of spores. They are prolifically produced by fungi, moss and, in particular ferns. Most spores are distributed by wind. Typically, spores are released in early May, for a period of about one week. Prior to release, the spore sacks are ripening, but once the conditions are appropriate, they release the spores and thereafter the spore sacks are empty.

Hence, the major period of concern for spread is limited the high sporulation period. Quaternary Ammonium Compounds (DDAC) are not effective at killing spores due to the spores having a thickened cell wall. However, as the spores begin to germinate, they produce protonema which are thread-like filaments which grow and colonise the substrate on which they have established.

The protonema have thin cell walls and it is at this stage that the DDAC is able to penetrate protonema and disrupt the cells, killing the organism prior to it becoming established on surfaces. In addition to the effectiveness against moss, AlgoClear® Pro is an extremely effective algaecide and will be effective at reducing these species colonising most surfaces.

Phototrophic Microorganisms

Filamentous Cyanobacteria

Blackish-Green Pigmentation

Red Algae

The genus Trentepohlia would not, at first glance, be taken as a green alga. Free-living species are mostly yellow to bright orange or red-brown in colour, due to the orange pigment, haematochrome (β-carotene), which usually hides the green of the chlorophyll. The genus is terrestrial and is often found in Europe on rocks, walls and tree bark. Where they are found on buildings, they can cause severe mechanical degradation and deterioration.

Fabio Rindi and Michael D. Guiry (2002) have identified five species of the genera Trentepohlia and Printzina in urban habitats in Western Ireland: Trentepohlia abietina (Flotow) Hansgirg, T.aurea (Linnaeus) Martius, T. iolithus (Linnaeus) Wallroth, T.cf.umbrina (Kützing) Bornet, and Printzina lagenifera (Hildebrandt) Thompson et Wujek. These species formed perennial populations on a variety of substrata. Of the species identified, T.aurea and T.iolithus were found on old concrete and cement walls; in particular, the latter species formed characteristic, extensive, deep-red patches on many buildings.

Western Ireland is a cold temperate area with high levels of rainfall and humidity. This area therefore supports a high level of rich and diversified algal flora. Trentepholia have been identified as one of the most common species to be isolated from walls and buildings in this region (Rindi, Guiry 2002).

Black Fungi

Phototrophic Microorganisms

Chemoorganotrophic fungi are especially concentrated in stone crusts. They are able to penetrate into the rock material by hyphal growth and by biocorrosive activity, due to the excretion of organic acids or by the oxidation of mineral forming cations, preferably iron and manganese.

Filamentous Cyanobacteria

This can often leave a rust-like stain on paving slabs even after washing. The deterioration activities of dematiaceous fungi also include the discolouration of stone surfaces, due to the excretion of the dark pigmented melanin Species capable of such staining are Alternaria

Blackish-Green Pigmentation

Aureobasidium, Cladosporium and Penicillium spp. The photographs below show a building wall covered with fungal growth (identified as Alternaria) sp.. The microscopic images show the development of fungal hyphae and on close-up, the pigmented spores can be seen.

Phototrophic Microorganisms

Filamentous fungi are composed of many cells forming thread-like hyphae which form a mycelium, or network of hyphae. Most fungal species prefer to grow at acid to neutral pH (3-6) and only require 30% moisture to survive. From these dense mats, aerial reproductive hyphae (known as conidiophores) will release millions of spores into the space directly.

Filamentous Cyanobacteria

The most common contaminants on substrates such as roofs, pavements and walls are the pigment producing Aureobasidiumsp sp., and Cladosporium sp. and Alternaria sp. These species will rapidly spread and colonise many surfaces causing disfigurement and decay by the release of pigments and acids respectively.

Blackish-Green Pigmentation

Indeed there are scientific studies that have identified over 22 fungal flora including filamentous micro fungi to be present on sandstone buildings. The major contaminant isolated was Aspergillus sp. which produced dark pigments and organic acids which were responsible for the decay of the sandstone historical monument.

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We are locally based in Northwest of England and service areas sorrounding: Merseyside, Lancashire, Cheshire, Other areas upon request

Whats On My Render

Do you have Red, Green or Black marks on your render? We can make it look like new

Algae-Cyanobacteria

Phototrophic Microorganisms

Filamentous Cyanobacteria

Blackish-Green Pigmentation

Biofilm

K-rend cleaning

How do we get the best cleaning results?

Softwash render cleaning

Certified K-render Cleaners

Moss & Lichen

Phototrophic Microorganisms

Filamentous Cyanobacteria

Blackish-Green Pigmentation

Phototrophic Microorganisms

Filamentous Cyanobacteria

Blackish-Green Pigmentation

Red Algae

Black Fungi

Phototrophic Microorganisms

Filamentous Cyanobacteria

Blackish-Green Pigmentation

Phototrophic Microorganisms

Filamentous Cyanobacteria

Blackish-Green Pigmentation

Our Recent K Rend Cleaning Jobs

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