Render Cleaning

Our patented steam cleaning equipment

designed and 3D printed in house...

could save you up

to 70% in access costs.

With no scaffolding needed your

render will be left looking new.

Cleaning Render from the safety of the ground with pioneering cleaning systems.

At Spectrum, we are never satisfied; we are continually pushing the boundaries of equipment design and capabilities to enable us to provide our clients with unrivalled service. We 3D print and manufacturer all of our equipment which is why we can clean render up to 8 floors from the safety of the ground. No scaffolding, No access costs and incredible results every time.

Cleaning render is a very complicated process. There are many types of render and varying stages of soiling. Both of the above determine what method and products will be used to carry out the clean safely and effectively. Using the wrong chemicals or a jet wash can cause significant damage to your building and may invalidate any warranties you may have.

Bespoke Multi-Access Strategy

We know that one of the most expensive parts of building maintenance can be access. Where possible we try to reduce this cost for you. We take a multi-access strategy process with all of our works. This means we will not only use one type of access to restore your facade. We use the most time efficient and cost effective access solution.

For example, elevation one may be on a slope to steep for a cherry picker for this side we will use our IRATA abseilers. Elevation two may be able to take advantage of our steam cleaning pole and be cleaned entirely from the ground. Elevation Four may require a cherry picker or scissor lift with our operatuves using the spectrum steam pole on a hand held lance. Meaning one project is 50% steam pole, 25% Abseil and 25% cherry picker. This is a far more cost effective solution that solely relying on scaffolding or a cherry picker for the total project.

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Why Use Us For Render Cleaning?

All Render
All Stages Of Soiling
can be cleaned

With hundreds of render restoration projects completed successfully, we can demonstrate the success of our 4 stages P.A.S.T process.

Cleaning Equipment

We have developed 3D printed and patented our equipment which enables us to steam clean up to 8 floors from the safety of the ground. Say goodbye to scaffolding on your render restoration projects forever.

Teaching CPD's

We have been researching and developing this cleaning process and are now offering CPD's to surveyors to teach them what we have learnt.

What is Render Cleaning?

Here at Spectrum, we specialise in restoring render to its former glory, using a unique biocide mixed specifically for each job. This process uses steam rather than pressure to restore render and remove dirt, grime and other imperfections.

If your building is looking tired and old, you don’t always need to pay out for a total repaint. It may be possible to use our steam cleaning render services to keep your exterior walls looking in great condition. All for a fraction of the price of repainting.

We know weathered render can affect the way a building looks from the outside, which is why we love cleaning and restoring render. No matter the age or weather it has withstood, we think we can transform the appearance of your building without you having to invest lots of time or money.

What to look out for when Render Cleaning

We always recommend that the use of power washing on render is to be avoided. That’s because it can cause cracking and force the water deeper into the render. When colder weather happens, this can cause further damage to the render surface that will be even more costly to repair.

That’s why we advise all of our clients to avoid power washing or jet washing and to choose Spectrum. We can offer deep cleaning services, without causing any further damage and at affordable prices.

Why Algae is a big Problem

Tired-looking or dirty render is often caused by algae. The most common types of algae found growing on render are brown, green and red. Sometimes your render may simply look dirty, but it is actually dark brown algae forming a covering over the outer layer.

In fact, the most common cause of discolouration to render surfaces is algae. Render has a porous surface and with the correct level of moisture this can create ideal conditions for simple asexual cell division. This allows quick reproduction of the algae across its surface, so algae can spread and develop through different life-cycle stages rapidly.

Our unique three-stage modern render cleaning process ensures the best possible results in removing algae or other soiling.

Render Cleaning with a Difference

At Spectrum, we are never satisfied. We are continually pushing the boundaries of equipment design and capability to enable us to provide our clients with unrivalled service. We 3D print and manufacturer much of our equipment, which is why we can clean render up to eight floors high from the safety of the ground. No scaffolding, no access costs and incredible results every time.

Here are some more reasons why we are different from the competition:

We Clean all Stages of Soiling

With hundreds of render restoration projects completed successfully, we can demonstrate the success of our P.A.S.T. process. Just take a look at our projects page to find out more about some of the jobs we have successfully completed and why our clients love what we do.

Pioneering Cleaning Equipment

We have developed, 3D printed and patented much of our own equipment. This, and our skilled team of access specialists, enables us to steam clean up to eight floors high from the ground. That means that you don’t need costly and intrusive scaffolding. It also means we can get the job done in a fraction of the time. A great result all round.

We’re Experts in our Field

We have been researching and developing this cleaning process and have become experts in our chosen field. In fact, we are now offering CPD training to surveyors to teach them what we have learnt and to pass on our years of experience. This is what you get when you choose Spectrum.

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What Can Render Cleaning Be Used For?

Render Cleaning

Render cleaning without professional expertise can cause irrepairable damage to the substrate. It is important that you choose a contractor that understands the properties of each type of render in order to treat it correctly. K-Rend needs a specially forulated cleaniing solution, gently applied with a specific method to effectively kill the algae and spores to prevent future re-growth. Our P.A.S.T. process is designed to clean and restore K-rend render to a like new condition with no risk to the substrate.

Render Cleaning

The chemical composition of silicone render means that it is often mis-treated and damaged during render cleans carried out by building contractors with limited knowledge of the material. The porous nature of the admix composition means that often jetwashing causes significant damage. Our high-temperature low pressure steam the S part of our P.A.S.T. process is one of the ways we not only restore but protect the render during the cleaning process leaving you with a restored facade that shouldn't need cleaning as frequently.

Render Cleaning

There are lots of types of render needing lots of different cleaning solutions and process's. We are experts in render cleaning and even teach surveyors and property managers through our CPD programme how to best maintain each type. Rest assured you will be in the safest of hands. We can clean Monocouche render up to 8 floors high from the safety of the ground. This means we are not only one of the safest contractors but the most cost effective.

Weber / Stowe /
Wetherby Render Cleaning

There are many render manufactuers that all communicate very different ways to maintain and restore render. This can make it all extremely confusing. With Spectrum you can equire about any time of render you have and we will have a cleaning solution. If you are not sure your rendered building can be cleaned we will happily carry out a free sample to show you the outcome.

Our Accreditations

What Our The UK's Leading Render Cleaning Contractors Customers' Say

R. Philippe

Property Manager

Over time the exterior of my rendered building had developed lardge green stains, completely ruining the look of my property! In just one visit the team at Spectrum not only removed these stains, restoring the exterior of my property to its former glory, but they were also able to deliver these results for much less than other contractors quoted! The team at Spectrum are truly the kings of render cleaning!

S. Daniels

Block Manager

As a Block Manager, the residents of my property come first. This is why I was nervous about pursuing maintenance work on the exterior of my high-rise render buildings- I didn't want my residents to have to live with scaffolding as their view! Through the use of abseiling, though, Spectrum was able to refresh the blocks I manage completely scaffold-free! I recommend Spectrum for any property managers looking for a reliable and painless Render cleaning service.

Property Manager

Spectrum's specialist knowledge and outstanding customer support makes them the best company for render clenaing in London. I was considering having the rendered property I manage poainted, when they explained to me how this could be a disasterous decision! Thanks to the specialists at Spectrum, my property is looking smart!

Property Manager

Spectrum is my go-to company for any maintenance on my rendered building. Lucian's team is highly professional and they always go above and beyond to ensure I feel like I am receiving the best value. Not only do they provide the highest quality render clenaing service I have seen to date, but they also provide me a full report and pictures! Many thanks to Lucian and the team at Spectrum!

Trusted By

Recent Completed The UK's Leading Render Cleaning Contractors Projects

Abseiling Sash Window Repairs

+plus pointAt Spectrum, we train our skilled decorator to abseil, ensuring they provide the highest quality refurbishments while also working at height!

How We Cleaned 15 Rendered Blocks In Kent In Under 5 Weeks

+plus pointOur self contained vans carried 1000 litres of purified water to site each day.

Knowledge and Experience

Cleaning render is a very complicated process – even though we make it look easy. There are many types of render and varying stages of soiling. The state and type of render determines what method and products will be used to carry out the clean safely and effectively.

Using the wrong chemicals or a jet wash can cause significant damage to your building, and may invalidate any warranties you may have. We use our extensive knowledge to carry out a survey of your render. We establish what products have been used and the best methods to produce a clean finish.

Below are some of the main types of render than we work with, and the best ways to achieve a clean finish when working with them.

K-Rend Cleaning

We can clean all K-Rend render using specialist products designed especially for our P.A.S.T. process.

Silicone Render Cleaning

We can clean all silicone render using specialist products designed individually for each job.

Monocouche Cleaning

We can clean all Monocouche render, again using specialist products designed for work with this kind of render.

Other types of render that we can work with include Weber, Stowe and Wetherby. Here at Spectrum we pride ourselves on being able to clean any manufacturer’s products using our softwashing render technique, producing a stunning finish that makes your building look good.

We will carry out a full site survey to assess the type and condition of your building’s render before any work is agreed to. During this visit, we will choose an appropriate biocide for the fabric of the render. We will then make sure that it is mixed in the correct ratios and add in appropriate catalysts depending on the type and amount of algae and dirt.

The biocide works into the render, killing all algae and any other living organisms. The render is then gently steam washed with an industrial DOFF steam cleaning machine to ensure the algae is completely removed. We always ensure the best steam cleaning machines are used, as this can make a big difference to the overall finish.

If you would like to know more about our render cleaning services, or to book a site inspection to assess your render, get in touch with a member of our team. External wall cleaning and render restoration are just some of the services we offer to keep your buildings looking in the best possible condition.

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Read Our The UK's Leading Render Cleaning Contractors Blog

A Property Manager's Guide to Render Cleaning

25th November 2020

Why is there Algae on Your Render?

3rd March 2020

What Does Weber Saint-Gobain Say About Maintaining Render?

28th December 2020

What is Softwashing?

14th October 2020

Algae Growth.

21st April 2020

Our Exterior Cleaning Checklist

30th December 2020

What are the Potential Risks of not Cleaning Your Modern Render?

4th February 2020

Soft Washing or Pressure Washing?

14th July 2020

How to Clean Modern Render.

11th January 2020

What Does Your Building Say to Your Clients?

1st July 2020

Can We Help With Your The UK's Leading Render Cleaning Contractors Needs?

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020 3551 6206

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We Cover The WHOLE Of The UK!

Our Latest Social Posts on The UK's Leading Render Cleaning Contractors

Spectrum is at Bank, London

Join our next Modern Render CPD webinar to discover the latest developments and practices for maintaining the exterior of your commercial or residential property!😄

Sign up on our website here:

Spectrum is at Moorgate, London

It may be April fools, but there are no tricks or editing behind these results!

When you work with professional property maintenance contractors, there shouldn't be any tricks or cutting corners. Our team of operatives not only know how to deliver results but are also equipped with the tools for any job! 👍

Check out the results our team have been able to deliver through our case studies here:

Spectrum is at Putney, London

In our monthly CPD, we get the opportunity to share our findings from years of research, development, and investment into the craft that is property restoration with those in our industry. 🤝

Visit our website to join the next one of these CPDs in the second week of April:

Spectrum is at Covent Garden, London

Over time, render will begin to discolour. This discolouration can be caused by a range of factors including algae, mould, carbon, and weathering. Not only do these signs of wear make your property look unappealing, but they can massively reduce the property's value!😮

Learn the best practices for render care in our Ultimate Guide to Render Cleaning here:

Spectrum is at East London

It is inevitable that the substrates composing the exterior of your property will age and discolour over time. Through the application of extremely heated steam, though, our team of operatives are able to make signs of ageing completely disappear! 😄
No, it's not magic- it's Doff steam cleaning!✨

Read our blog to learn more about the benefits this cleaning solution can provide to the exterior of your property here👉

Spectrum is at South London

The DOFF machine has transformed the way we are able to clean the exterior of properties! From silicone render to heritage stone, the extremely heated steam from this machine has proven to clean off stains and signs of wear without causing damage to the exterior of the property!👏

Read our 'Ultimate Guide to Doff Cleaning' to learn more about this powerful cleaning method and how we use it to transform the face of buildings:

Spectrum is at South London

Last month we hosted a CPD on modern render for the building surveyors at CBRE. Not only was this an incredible opportunity for us share our expertise on maintaining modern render after years of working with the substrate, but it is also was gratifying experience knowing that we were contributing to the development of our industry!

The building and construction industry moves at a rapid pace, which is part of the reason why surveyors are required to complete 20 hours of CPD every year. We designed our CPD just for this purpose too; to help support the evolution of our industry!

Join our next CPD on March 18th at 16:00 to learn about the latest developments in modern render! To sign up, follow this link:

Spectrum is at Shoreditch, London

Do you know what rain, carbon, mould, and algae all have in common? They all slowly wear and stain the exterior of your property! Through our Major Building Works service, can completely restore any element of your building that has been worn over time, giving your property a fresh aesthetic!👍

Visit our website to learn more!

Spectrum is at Chelsea, London

Did you join our CPD webinar last week?💻

In our monthly CPD webinar, we fuse of our passion with innovation and professional expertise in the field of property refurbishments to share the latest breakthroughs in the industry!💡
And after spending over £250k in research and development throughout the years- we have a lot to share!

Click this link to join our next webinar on March 18th at 16:00:

Spectrum is at Clapham Common, London

What does the exterior of your building say?🤔If it is begging for some TLC, then it may be ready time for some major building refurbishments!

Through our Major Building Works service, not an inch of your building's exterior will go untouched. Whether it requires wooden window repairs, render cleaning or stone colour correction- our team of experts will leave your building returned to its original aesthetic! 😄

Spectrum is at Spectrum HQ

Are you going to be joining our CPD webinar on Wednesday at 12:30?🤓

I can assure you, this is no cookie-cutter, surface-level webinar! We want to make sure you leave with as much value as possible, which is why the webinar covers access methods, render repairs, and our custom-designed P.A.S.T cleaning method in-depth.

It's not too late to sign up, visit this link to save your place 👉

Spectrum is at Battersea, London

We understand things don't always stick to budget, especially for any complex contracts like the ones involved in major building works projects- which is why flexibility is at the core of our services.

We are only happy when our customers are satisfied and are willing to do what it takes to ensure each of clients receives the best service!😄

Visit our website to learn more about how we tailor our services to meet our clients's needs on our website:

Spectrum is at Waterloo, London

Cleaning render with a DOFF machine doesn't just deliver instant transformative cleaning results, but is also provides long-lasting preservation as the gentle pressure from the steam won't wear or crack the surface of the render- keeping your building looking crisp longer!😄

To learn more about the preservative effects of doff cleaning on render, visit our website:

Spectrum is at Whitehall, London

For this week's most searched property maintenance question, we are going to share how we clean render!

Render is a cement mix added to the exterior of buildings to give them a smooth, sleek look. While this substrate looks sleeks, it very gentle is is prone to cracking under intense pressure- mitigating the use of a pressure washer for maintenance. ❌

Through our years of experience in working with render, we have discovered the best way to clean it is actually with steam from a DOFF machine! The extremely heated steam used in doff cleaning is powerful enough to clean any stains without leaving any damage!👍

Learn more about how apply the principles of doff cleaning through our Render Cleaning service on our website:

Spectrum is at Twickenham, London

Incredible steam cleaning results, no scaffolding required!

Scaffolding is not only an expensive access method, but it poses a variety of dangers to our operatives and is an eyesore for tenants. 

This is why we have invested in training our team of exterior cleaning technicians to be IRATA trained abseiler! Specialising in cleaning a range of different substrates and abseiling, our technicians can doff clean any property for less!💪

You can learn about how our team doff steam cleaned this render property through abseiling on our website here:

Spectrum is at Nottinghill, London

Our key to getting such powerful stain-removing results on render properties?🔑

Extremely hot steam from a DOFF machine! 

That's right, a DOFF machine can clean a lot more than just stone! Through the hot steam delivered through this machine, we able to remove every sign of carbon monoxide stains to algae stains on any type of render!

To learn more about of Doff Cleaning service, visit our website:

Spectrum is at Brighton

When cleaning either acrylic or silicon based render, we have apply our patented P.A.S.T. system!

Featuring doff cleaning, we designed this system to clean the toughest of stains without causing any damage to the render!😊

The four-stage process P.A.S.T. process includes:

P - Planning and Preparation

A - Application of Biocide

S - Steam

T - Treatment to stains

Just see how this system transformed this client's rendered property!👀

You can learn more about our P.A.S.T. system through this render cleaning case study:

Spectrum is at Reading

This client's close proximity to a motorway left dark stains on their rendered property.👎

The only solution to these stains was high temperature steam!

Through the use of a DOFF machine and our patented equipment, the stains disappeared!

Learn more about our Doff Cleaning service on our website:

Spectrum is at Soho, London

As we enter a new year, we would like to share our appreciation for all of the clients across the country that have trusted us to repair and refresh the exterior of their properties! 🌟

While 2020 has been a year we would have never expected, we are grateful that despite everything we have been fortunate enough to serve our clients and offer them value in new ways, such as through our disinfecting service! 👍

Needless to say, we cannot wait to see how we will be able to help our clients maintain the facade of their properties in 2021!😄

To learn about the services we offer, follow this link:

Spectrum is at Moorgate, London

Do you manage a rendered property?

If so, be sure to join our monthly CPD webinar sharing the dos and don'ts of maintaining modern render!💻

With years of experience restoring render properties around the U.K. under our belt, you can leave the fate of your render in our hands!👍

To learn more and sign up for this month's webinar tomorrow, click this link: