Render Cleaning Exeter

K-Rend & monocouche render specialists | Soft wash experts | From £150

Why Professional Render Cleaning Matters

Protect your property's appearance and value with expert render cleaning in Exeter

Protects Your Investment

Render can cost between £5,000 and £15,000 to replace. Regular professional cleaning extends its lifespan dramatically, saving you thousands in the long run. Prevention is always cheaper than replacement.

Soft Wash Method

Unlike pressure washing, our soft wash technique uses low pressure and specialist cleaning solutions. This cleans thoroughly without risking damage to your render's surface or protective coating.

Long-Lasting Results

Our biocide treatment doesn't just clean the surface - it kills algae, lichen, and organic growth at the root. This prevents regrowth for 2-3 years, giving you lasting value from every clean.

Types of Render We Clean

We have experience cleaning every type of render found on Exeter properties

K-Rend

K-Rend is one of the most popular render systems in Exeter, particularly on new build estates and modern developments. It is a silicone-based, through-coloured render that requires careful cleaning to avoid surface damage. Our soft wash approach is the manufacturer-recommended method for maintaining K-Rend finishes.

Monocouche

Monocouche (single-coat) render is extremely common on Exeter new builds due to its quick application and attractive finish. Like K-Rend, it is through-coloured and cannot be repainted easily, making proper cleaning technique essential. We use low-pressure soft washing to restore monocouche without affecting its colour or texture.

Silicone Render

Silicone render is designed to be water-repellent and breathable, but it still accumulates algae and dirt over time - especially in Devon's damp climate. We clean silicone render with a gentle biocide application followed by a low-pressure rinse, preserving its hydrophobic properties while removing all biological growth.

Acrylic Render

Acrylic render offers a smooth, flexible finish but is prone to algae growth in damp conditions. It requires a particularly gentle approach as aggressive cleaning can damage the acrylic surface. Our soft wash method is perfectly suited to acrylic render, removing staining without compromising the finish.

Cement Render

Traditional cement render is found on many older properties in Exeter. While more robust than modern renders, it is often painted and can absorb moisture if the paint coating is worn. We assess the condition of cement render carefully before cleaning and adjust our method to suit, ensuring we clean without causing water ingress.

Pebble Dash

Pebble dash render has an uneven, textured surface that traps dirt, algae, and moisture in its crevices. This makes it particularly prone to green and black staining. Our biocide treatment penetrates deep into the textured surface to kill growth at its root, while our soft wash rinse clears debris without dislodging the aggregate.

Local insight: K-Rend and monocouche render are by far the most common types we encounter on Exeter new builds, particularly in developments across Pinhoe, Cranbrook, and the Topsham Road corridor. If you have a newer property in Exeter, there is a good chance your home has one of these render systems - and we know exactly how to clean them safely.

Common Render Problems in Exeter

Devon's wet climate creates unique challenges for rendered properties

The Problems

Green Algae Growth

Devon's wet climate and mild temperatures create perfect conditions for green algae. This is the single most common problem we see on rendered properties in Exeter, particularly on north and west-facing walls.

Red / Orange Algae

Trentepohlia algae produces distinctive red-orange streaking on render. It thrives in damp, humid conditions and is increasingly common across Devon properties.

Black Staining

Black mould and dark staining often appears under window sills, around guttering, and on sheltered areas of render where moisture lingers.

Atmospheric Pollution

Road dust, exhaust fumes, and general airborne pollution gradually discolour render, particularly on properties near busy roads.

Bird Droppings

Bird droppings are acidic and can permanently stain render if left untreated. They also encourage further biological growth on the surface.

General Weathering

Over time, exposure to rain, wind, and UV light causes render to look tired, dull, and grey - even without significant biological growth.

Our Solutions

Professional Biocide Treatment

We apply professional-grade biocide that kills algae, mould, and lichen at the root. This isn't a surface-level clean - it eliminates the organism entirely so regrowth is drastically slowed.

Soft Wash Cleaning

Our soft wash system uses low pressure (under 100 PSI) combined with specialist cleaning solutions. The chemicals do the work, not the pressure - giving you a deep clean without any risk of damage to your render.

Protective Coating Application

After cleaning, we offer an optional biocide retreatment that acts as a protective barrier. This coating inhibits regrowth for 12-18 months, keeping your render cleaner for longer between professional cleans.

Targeted Stain Treatment

For stubborn stains such as bird droppings, rust marks, or pollution discolouration, we apply targeted treatments before the main clean to break down the staining without affecting the surrounding render.

Gutter & Downpipe Check

Many render staining issues are caused by overflowing or leaking gutters. We check your guttering during our survey and can advise on any repairs that would prevent future staining problems.

Full Property Restoration

For heavily weathered properties, we provide a comprehensive clean covering all rendered surfaces, soffits, fascias, and window frames - transforming the entire exterior in a single visit.

Our Render Cleaning Process

A proven 4-step process that delivers outstanding, long-lasting results every time

Survey & Assessment

Every job starts with a thorough survey. We assess the type of render on your property, its current condition, and the nature and severity of staining. This allows us to choose the correct cleaning solution and method for your specific render. We also check for any existing damage such as cracks, loose areas, or failed sealant that might need attention before cleaning. The survey is free and comes with an honest, no-obligation quote.

Biocide Application

We apply a professional-grade biocide solution to the entire rendered surface. This product penetrates into the render to kill algae, mould, lichen, and all other organic growth at the root - not just on the surface. The biocide requires a dwell time to work effectively, which we factor into every job. This step is the foundation of a proper render clean and is what separates a professional service from a DIY attempt with a garden hose.

Soft Wash Clean

Once the biocide has done its work, we carry out a low-pressure rinse using our soft wash system operating at under 100 PSI. This gently removes all dead organic matter, dirt, and grime from the surface without any risk to the render. The soft wash technique relies on the cleaning solutions to break down contaminants rather than using brute force - it's the safest and most effective method for all render types.

Protection (Optional)

For maximum longevity, we offer an optional biocide retreatment once the render is clean and dry. This protective application creates an inhospitable environment for algae and organic growth, keeping your render cleaner for 12-18 months longer than cleaning alone. We highly recommend this step for north-facing or shaded walls that are prone to quicker regrowth. It adds a small cost but delivers significant long-term value.

Why Soft Washing, Not Pressure Washing?

Understanding the difference could save your render from permanent damage

The Danger of Pressure Washing Render

We regularly see properties where well-meaning homeowners or inexperienced cleaners have used a standard pressure washer on render - and the results are often costly. High-pressure water jets, typically operating at 2,000-3,000 PSI, can cause serious damage to rendered surfaces.

Water ingress: High pressure can force water behind the render and into the wall cavity, causing damp, mould growth, and even structural damage over time.

Surface damage: Pressure washing can crack render, chip the surface, and create pitting that collects dirt and moisture - making the problem worse in the long run.

Coating removal: Modern renders like K-Rend have a protective coating. High-pressure jets strip this coating away, leaving the render exposed and more vulnerable to future staining.

Colour fading: Through-coloured renders can have their pigment blasted away by high pressure, leaving visible patches and streaks that cannot be repaired without re-rendering.

The Soft Wash Advantage

Soft washing takes the opposite approach. Instead of relying on extreme water pressure to blast dirt away, it uses specialist biodegradable cleaning solutions at low pressure to do the work. The chemicals break down algae, mould, and dirt at a molecular level, and a gentle rinse removes everything cleanly.

Zero risk of water ingress: Operating at under 100 PSI means there is no chance of forcing water behind the render or into the wall structure.

Preserves render integrity: No cracking, chipping, or surface damage. Your render's texture, colour, and protective coating remain completely intact.

Kills growth at the root: Pressure washing only removes what you can see on the surface. Soft washing with biocide kills algae and mould spores deep within the render, meaning it takes far longer to return.

Better, longer-lasting results: Because the cleaning is chemical rather than mechanical, you get a deeper, more even clean that lasts significantly longer than a pressure wash.

Bottom line: If someone offers to pressure wash your render, say no. Soft washing is the only safe and effective method for cleaning rendered surfaces. It is what render manufacturers recommend, and it is the only method we use.

Render Cleaning Prices in Exeter

Transparent, competitive pricing for all property sizes

Small Property

2-bed terrace

From £150

Medium Property

3-bed semi-detached

From £250

Large Property

4-bed detached

From £400

Commercial Property

Offices, shops & more

Quote on Request

Pricing note: Prices depend on property size, render type, and level of staining. We provide free, no-obligation quotes for all jobs. There are no hidden fees - the price we quote is the price you pay. Get your free quote today.

Frequently Asked Questions

Everything you need to know about render cleaning in Exeter

How often should render be cleaned?

Every 3-5 years depending on location and exposure. Properties in shaded or north-facing areas may need cleaning more frequently, as these conditions encourage algae and biological growth. Regular cleaning not only keeps your property looking great but also extends the life of your render.

Will pressure washing damage my render?

Yes, high-pressure washing can damage render. That's why we use soft washing - low pressure combined with professional cleaning solutions that do the hard work safely. High-pressure jets can force water behind the render, cause cracking, and strip protective coatings. Our soft wash method keeps your render intact while delivering outstanding results.

How long does render cleaning take?

Most residential properties take half a day to a full day. Larger or heavily stained properties may take longer. The biocide application needs time to work before we rinse, so we factor this dwell time into every job to ensure thorough results.

Do you clean K-Rend?

Yes, K-Rend is one of the most common render types we clean in Exeter, especially on newer properties. Our soft wash method is perfectly safe for K-Rend and all other silicone-based renders. We understand the specific requirements of K-Rend finishes and adjust our approach accordingly.

How long do results last?

With biocide treatment, your render should stay clean for 2-3 years. Without treatment, you may see regrowth within 12-18 months. We always recommend the biocide protection step for the best long-term value.

Can you remove red/orange algae from render?

Yes, this is a common problem in Devon due to the wet climate. Our biocide treatment kills the algae at the root rather than just washing the surface. This is the key difference between professional render cleaning and a DIY approach - we eliminate the problem at its source so it takes much longer to return.

Render Cleaning Across Exeter & Devon

We provide render cleaning across Exeter and the surrounding area including:

Exeter

Crediton

Tiverton

Cullompton

Honiton

Exmouth

Dawlish

Teignmouth

Newton Abbot

Sidmouth

Budleigh Salterton

Free quotes for all locations listed above with no travel charges. Don't see your area? Call us - we cover all of Devon and are happy to discuss your project wherever you are based.

View our full list of services or get in touch for a free quote.