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Render Cleaning for Property Management Companies


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Render Cleaning

When you need render cleaning to an apartment building you mange, simply call 01233 550100

Soft Washing will make all types of render look like new very quickly and will enhance the look of the property.

No hard work required from you, simply call 01233 550100 and leave the rest to us. We guarantee you will not have to clean up after we have gone.

  • Pet Safe
  • Child Safe
  • Plant Safe

K-Rend, Monocouche and Weber Render which is covered in moulds are best cleaned using  Sodium Hypochlorite & Green Wash.

We offer you a FREE consultation on all render cleaning projects – 01233 550100

How Much Does Render Cleaning Cost?

Well there are a lot of factors considered and how high is the building is the main one. We need to determine can it be accessed from the ground around it or do we need to use scaffolding, access MEWP or other?

Apart from that, what needs cleaning off? Is it man made, like graffiti, paint, rust or other metal stains? Is it organic, like cyanobacteria, moss, lichens and moulds?

As a general guide  a standard modern built home could cost between £1,200 and £2,600 to treat and clean the infestation from the render.

Larger office and apartment buildings could cost between £5.75 and £8.75 per square meter plus add on any access costs.

Also beware of other costs which may need adding on. Is there a water supply in the form of an outside tap or will water need to be brought in?

Waste water collection MUST be factored into any building cleaning project as waste water is not allowed to enter storm drains. A huge fine for the building owners and cleaning contractors is likely. Therefore  a way to collect and dispose of waste water must be added – typically between £1600 and £2600 per week!

When your property’s render is cleaned by Purple Rhino…

  • You will know you made the right choice when you see the results
  • Increased kerb appeal and a rise in your property’s value
  • Ugly stains and marks will be a distant memory.
  • Render looks like new and has been fully sanitised.
  • You won’t need to make excuses and be embarrassed by your dirty, stained building.

No effort required from you, let us do all the planning and carry out your building’s render cleaning needs.

Our highly skilled, specialist render cleaning teams will transform your dirty, stained rendered façade into a clean one.

Contact us on 0800 157 7484 for a free quotation, we’ll discuss your requirements in more detail.


Prevent exterior wall damage by using Purple Rhino’s specialist render cleaning services.

Weather, pollution and other environmental factors can cause significant damage to a building’s rendered surfaces.

Moss growth, algae and pollution can cause serious damage if left untreated. Our skilled team of professionals will expertly rejuvenate your building’s exterior.

Reversing the ageing process

New buildings are certainly impressive but, over time, rendering becomes dull as pollutants, moss and algae take hold, leaving the building stained, dirty and tired-looking. We can reverse this ageing with a safe and highly-effective outdoor cleaning process, using the latest tools and techniques to gently remove dirt and build-up.

Since our launch, we have established a strong reputation for effectively removing moss and algae from a number of rendered surfaces on commercial, industrial, educational and residential properties. The benefits of correct render cleaning cannot be underestimated. For your render cleaning project, choose a reputable company who can demonstrate they have successfully undertaken render cleaning projects similar to yours.


We use Greenwash which has anti-microbial properties to keep render looking clean and fresh, up to 4-6 times longer.

The process starts by treating outside walls before commencing a thorough clean of the render using our specialist softwashing equipment to gently remove stains, marks and algae.



Removal of algae and moss from through coloured renders isn’t as straightforward as it may appear. Many building owners place their trust in local builders or commercial contractors to undertake the remedial works but without the correct expertise this can prove to be a costly mistake.

Different types of render, should be appropriately treated before any cleaning work begins, effectively killing off spores to prevent regrowth. Once the render surface has been suitably prepared we then apply steam under low pressure to gently remove any algae which remains after the treatment while also lifting away dirt and pollutants. Once the render has been cleaned properly you are left with a surface which is bright, clean and fully restored with no damage to the render.

Why not just paint it?

Painting over dirty render may (very) temporarily improve its appearance, but after a very short time indeed, the dirt, staining, moss, lichen and mould in particular will work it’s way through the paint; causing it to blister and flake away.

You still need to clean it before painting it.

Then there’s the added problem of removing the paint before you can even consider cleaning the render. Not to mention that painting over render is often more expensive and time-consuming than having it cleaned by trained specialists, such as Purple Rhino.

Additionally, the painting process can seal moisture into the render and prevent it from ‘breathing’. This can cause the render itself to fail and come away from the building in chunks. The only remedy to this is an expensive re-render.


Enquire About Render Cleaning Here

Arrange your FREE test sample clean and fully written quotation by completing the simple form below & also receive a free e-book

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    Exterior Render Cleaning Services

    Before starting any project we conduct a thorough assessment of the surfaces to be cleaned to ensure we use the correct techniques to achieve the best results. Incorrect assessments, inexperienced operators and poor cleaning techniques can easily result in damage.

    Here at Purple Rhino we have the skills, knowledge and experience to deliver professional biocide render cleaning services that you can trust for K-Rend Render, cream render, and any other through-coloured render.

    Moreover, the benefits of render cleaning and the application of protective systems include;

    • Removal of unsightly green moss and algae from the render
    • Restores render to an ‘as new’ condition
    • Gentle removal of pollutants, moss and algae
    • Protect your building from corrosion or further damage associated with moss growth
    • Prevention of damp from becoming a problem
    • Allows the walls to breathe while preventing the growth of unwanted moss

    When  looking for professional building render cleaning services to restore and preserve the render on your property, please contact us for a free quote.

    Purple Rhino use environmentally friendly and fully bio degradable cleaning products and processes whenever we possibly can. We were the first company in the UK to perfect the use of steam for render cleaning and we have set the standards very high. Housing associations choose us for their render cleaning projects and you can too by calling 0800 157 7484 TODAY to organise your FREE render sample clean.

    Should you require render cleaning anywhere in the UK you have found the best building render cleaning company, call us today for a hassle free service.

    How to clean exterior rendered walls

    Depending on the structure of the building and brand of type of render you want to clean. You can reach and clean the render using either high reach carbon fibre telescopic poles or perhaps specialised softwashing equipment.

    Water-fed pole method

    Prepare the delivery machine with the right amount of render cleaning solution. Connect the water fed pole to the Render Cleaning Machine, then start brushing the solution onto the rendered wall from the bottom and work your way up to the top. Allow the render cleaning solution to dwell for a short time of about fifteen minutes and then rinse with clean fresh water.

    You MUST ALWAYS wear appropriate PPE when carrying out render cleaning activities.

    Using soft washing equipment

    This technique can be used where access is difficult or high level hard to reach surfaces. You may need to use an elevated work platform (cherry picker) which should be operated by a competent person. The low pressure softwashing systems pumps will deliver an even flow of softwashing mixture to the required areas. Some carbon staining on the render may need additional equipment such as a low pressure steam cleaner to remove them effectively. Carbon staining on render is usually seen at the top of the rendered wall just underneath the parapet.

    Our rendering cleaner systems offer longer-lasting results, guaranteed!

    We strongly advise NOT to use pressure washers to clean render.


    K-Rend render when Softwashed leaves the K-Rend sparkly and new looking. The same can be said for Monocouche, Parex, Weber and all other types of through coloured renders.

    We also offer a FREE sample clean service AFTER you have had your building cleaned by a pressure washing company. Simply call us and we will come and treat an area of about two to three square metres. In the following months and years, you will see, the area we treated will still be perfectly clean, whereas the rendered surfaces which have been pressure washed will quickly regrow thicker organic matter growth making your building look worse than before it was pressure washed cleaned.

    When you are looking for Roof Cleaning Services we can help, simply call 01233 550100

    Are you looking for Render Cleaning Chemicals?


    Frequently asked questions

    Purple Rhino SoftWash is devoted to providing it’s customers the highest level of quality, value, professionalism and customer service.

    We will treat you, your home and property with respect and as if it were our own. We will not rush to complete a job, or cut corners to save time. Purple Rhino prides itself on spending as much time as necessary to ensure that a high level of value is provided and your 100% level of satisfaction is achieved.

    We’re a family-run business based in Ashford that has took training courses around the world with the industry leaders and as a result we are fully industry standard accredited so you know you are going to get the best results.

    Our employees are trained and certificated in exterior hard surface sanitising procedures.

    Our SoftWash equipment has always santised exterior surfaces whilst we clean your home or business. This is why we are so different to other exterior cleaning companies.

    We provide safe, proven SoftWash methods, utilise professional grade equipment, use exclusively low-pressure, safe roof & exterior cleaning SoftWash methods, and non-damaging, eco-friendly, bio-degradable cleaning solutions for your exterior home cleaning needs. We are trained specialists in the cleaning and treatment of roofs and sidings.

    Don’t take our word for it, see what others think about by reading our reviews.

    Short answer: YES.

    Roof, render and wall cleaning always carries an inherent risk to your landscaping and plant life. We can’t guarantee that some of your landscaping will not be affected by the cleaning process (and you should seriously question any exterior building cleaning contractor who does make such a guarantee…).


    What we do guarantee is that we’ll take every precaution to protect your plant life. We also guarantee that if something negative does happen after your cleaning service we will be there for you to help you get it rectified. In order to mitigate as much risk as possible, we use a variety of strategies to protect landscaping and plant life:

    • Collection and/or diversion of run-off.
    • Dilution of over spray and run off before, during and after the job.
    • We apply a neutralising agent to soil and plant life where necessary.
    • Coverage of delicate plant life with breathable traps.

    These precautions protect your plants as much as possible. In the unlikely event that you do notice any issues after service, such as wilting or browning leaves, wilting flowers, etc., please give us a call. We promise to take care of you!

    Probably not

    Providing we can get clear safe access to all points of the property and a water supply you can leave us to get on with it so you could go to work, do the school run or a bit of shopping and return to a clean environment.

    Each cleaning project is different and many factors are taken into consideration when producing your quote.

    Height, square footage, degree of black stains, is moss and/or lichen present, perimeter landscaping, accessibility, water point &  pressure, etc. all need to be considered.

    Only a correct inspection can fully determine the work required and with us it’s a FREE quotation with no pressure from pushy salesmen.

    Yes, we can.

    Purple Rhino SoftWash understands that certain cleaning needs may apply, such as touching up only the front visible areas to increase the curb appeal for a home for sale.  But it is highly recommended to avoid a partial cleaning and treatment.

    Any untreated sections most likely already have bacteria and algae spores you cannot see. These spores will travel to the treated roof sections and expedite contamination and regrowth. Therefore we do not offer the 5 year “spot free” limited warranty on partial cleanings and treatments.

    Incidentally our 5 year “spot free” limited warranty is transferable if a home is sold.

    We request payment made in full upon completion of work.

    We accept bank payment, Visa, and Master Card.


    Purple Rhino SoftWash employees have completed certification training through SoftWash Systems, attended SoftWash hands on seminars and attend yearly SoftWash training events to stay current on all techniques, methods and SoftWash application methods.  Purple Rhino SoftWash carries a £1 Million Commercial Liability Policy for your added protection and peace of mind.


    Our SoftWash process provides fantastic results on vinyl siding, hardy siding, painted surfaces, playgrounds, pool decks, pavements, canopy tents and just about all other exterior surfaces. SoftWash cleans and brightens without the abrasive damage of a pressure-washer!

    So please give us a call to discuss other exterior surfaces.


    Our Safe Roof & Exterior Cleaning SoftWash System’s proven process and proprietary solutions are guaranteed to successfully remove the ugly black streaks from all types of exterior render the day of cleaning and treatment. Purple Rhino’s SoftWash process provides a 100% kill ratio on bacteria, algae, moss and lichen!  Our exterior cleaning method cleans the render of black streaks, kills all bacteria, moss and lichen to include roots, and inhibits the return of all growth.

    By Soft-Washing and in some cases, low-pressure steam.

    We never use pressure washers to clean render. It is far to likely to damage the surface of the render.

    Specific plant and property protection training has been completed and protective measures are part of our everyday operating procedures!

    People, plants and pets remain safe!  All of our solutions are eco-friendly and biodegradable. We ask that pets and families stay in doors until our work is complete. We understand people need to come and go and this can be accomplished with just a little coordination in the work area. Pets are free to go outside as soon as our work is complete and we have cleaned-up.

    Our crews are trained to do everything within their power to protect plants and property!

    We pre-wet all nearby plants as a precaution and repeat as needed during the cleaning and treatment process. Plant protection by applying a proprietary plant wash containing plant nutrients and a chemical neutraliser. Applied to all nearby plants and vegetation as an added precaution once the job is complete! This plant wash and rinse is specially formulated to mitigate any potential concerns. According to our customers,  there plants have never looked so good.

    Purple Rhino ensures that your landscaping remains in the same condition or better.

    Firstly, we will never use a pressure washer or high pressure on your roof or siding.

    Our professional-grade system is designed to operate and deliver the application of cleaning solutions at 45 -50 psi. That’s about the strength of your garden hose or a hard rain fall. Our solutions do the work gently and as recommended by roofing manufacturers.

    Purple Rhino SoftWash can clean your rendered walls and other exterior surfaces safely.

    It’s the most effective yet most gentle exterior cleaning process available.

    We are so confident we can impress you with the capabilities of SoftWashing, that we now offer a FREE sample clean service AFTER you have had your building cleaned by a pressure washing company. While we strongly advise against pressure washing, if your have had your walls presssure washed recently, simply call us and we will come and treat an area of about two to three square metres.

    In the following months and years you will see the area we treated will still be perfectly clean, whereas the rendered surfaces which were pressure washed alone will quickly regrow thicker organic matter growth making your building look worse than before it was pressure washed.

    Because Softwashing removes more than pressure washing without causing damage

    Pressure washing is very effective at removing the bulk of organic material from a rendered surface. But the process doesn’t remove all organic mater at a microbial level. Pressure washing is also a high-impact method of cleaning which can damage render by literally blasting it apart.

    Additionally, the organic matter a pressure washer doesn’t remove is forced into the surface of the render. This can make it even harder to clean in future. Pressure washing can also redistribute microscopic organic matter around a rendered surface, causing it to regrow even quicker than before. In this respect, it’s similar to mowing a lawn.

    Softwashing actually sanitises rendered surfaces; it removes all organic matter. This means that any future growth on the rendered surface is new growth rather than re-growth; this is why our results are so long-lasting

    No! Please don’t!

    Pressure washing can cause extensive damage to most render types. It often forces organic matter deeper into the render layer, making algae moss and lichen problems worse, rather than better. Purple Rhino NEVER use pressure washers to clean render.

    Our trained technicians use the softwashing method to clean your render to an exceptionally high standard. Sometimes we use low-pressure steam as well to ensure your result is as clean as it can be.

    I look forward to helping you get your building super clean,

    Yours sincerely

    Darran Smith

    Darran Smith, Director, Purple Rhino Building Cleaning

    Case Studies of Our Cleaning Work

    See all case studies
    • Case Study

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      Render Cleaning Services – Telford

    • Case Study

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      K Rend – Render Cleaning Services

    • Render Cleaning at Holiday Inn Express

      Case Study

       Purple Rhino Author Logo

      Exterior Cleaning Holiday Inn Express

    • Block-of-Flats-Render-Cleaning-Purple-RHino

      Case Study

       Purple Rhino Author Logo

      Stone and Render Cleaning using DOFF

    • Render Cleaning London E1

      Case Study

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      Render Cleaning – St Clements House London E1 7LL

    • Case Study

       Purple Rhino Author Logo

      K Render Cleaning Services at Worthing Hospital

    What our Clients Think

    See all testimonials
    • I contacted Purple Rhino with a view to cleaning the external K Render panels on our large out of town retail park in Llandudno. The works were completed effectively on time, within budget and the K Render panels were extremely clean upon completion. This is was the first time I have used them but would definitely consider using them again.


    • My experience with Purple Rhino was outstanding,  form the gentleman that completed a quote for the work to be completed to the guys who cleaned down the exterior of our building all were prompt, polite and professional .  I would recommend the service to everyone!!!


    • We would confirm Purple Rhino undertook the cleaning of ten large internal courtyard areas at the above hospital. As may be expected with hospital work complications did arise particularly from The Trust who had concerns with regards to patients in individual wards all of which were adjacent to the working areas. Not withstanding these problems Purple Rhino worked quickly and diligently with all parties so as to mitigate the issues and were able to complete in a timely and expeditious manner. All parties, including The Trust, were most appreciative with the quality of the completed works. In view of these experiences with Purple Rhino, we would not hesitate to recommend them for any future works relating to cleaning facades.


    • Excellent Service – Minimal Disruption – Would Use For Render Cleaning Again


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