wash render

How to clean render on a house?

Today, we focus on render cleaning – a crucial aspect of maintaining the aesthetic and structural integrity of your home. Over time, rendered walls can accumulate unsightly dirt, green algae, and various stains that not only mar the appearance but can also lead to long-term damage.

Understanding the right cleaning process for your exterior walls is key to preserving their beauty and longevity. Whether it’s combating stubborn algae growth or general dirt, our expertise in cleaning render will guide you through the most effective techniques.

We use only the finest render cleaner methods, ensuring that your home regains its pristine look without compromising the delicate render surface. Stay with us as we explore how to clean render on your house with precision and care, helping you maintain a stunning exterior that stands the test of time.

render cleaning

Common methods of cleaning render

When it comes to cleaning render, several methods stand out, each with its own pros and cons. It’s essential to choose a method that not only cleans effectively but also preserves the integrity of your rendered walls.

Manual cleaning

Method: Start by using a stiff-bristled brush to thoroughly scrub the surface of the render. This technique works best when you begin from the top of the rendered area and work your way down, ensuring an even cleaning process.

Pros: This method is a popular choice for regular maintenance, as it is simple to carry out and low in cost.

Cons: It can be quite labor-intensive and might not effectively remove stubborn stains such as grease, mould, or rust.

Chemical cleaning:

Method: This involves applying mild detergents or specialized render cleaners, such as k rend or weber CL150, particularly for tougher stains and algae growth. It’s crucial to evenly coat the render, allow the chemicals to break down the dirt or algae, and then rinse the surface thoroughly.

Pros: More effective for removing stubborn stains and killing off green algae, making it a suitable choice for deep cleaning.

Cons: There’s a risk of damage to the render and surrounding vegetation if not done properly. The chemicals used can also strip paint and affect the coating of the render if not selected and applied correctly.

Pressure washing:

Method: Using a pressure washer set to a fan-spray is advisable to clean the rendered surfaces without causing damage. Start from the top of the wall and methodically work your way down to ensure all areas are maintained.

Pros: This method is efficient for cleaning large exterior surfaces, removing layers of dirt and grime quickly and effectively.

Cons: Pressure washing can be harsh on certain types of render, potentially leading to moisture ingress or damage to the surface. It’s essential to adjust the equipment to the right setting to avoid these issues.

Each of these methods has its place in the cleaning process of rendered walls. However, it’s vital to assess the condition of the render and choose the most suitable method. For regular maintenance, manual cleaning may suffice, but for more severe cases of algae, oil, or grease stains, chemical cleaning or pressure washing might be necessary. Ultimately, the goal is to ensure that your house or building looks its best while the render remains protected and its life extended.

k rend

Why DOFF steam cleaning stands out on other methods in render cleaning?

In the world of render cleaning, DOFF steam cleaning is a game-changer, offering unparalleled benefits that set it apart from traditional methods like jet washing or soft washing.

Safety and Efficiency

The cornerstone of DOFF steam cleaning’s superiority lies in its use of high-temperature steam. This approach is gentle on the render yet highly effective in removing the toughest of stains, including stubborn mould, grease, and biological matter like algae growth. Unlike jet washing, which relies on high pressure that can damage the render’s surface, DOFF steam cleaning uses low pressure, ensuring that the cleaning process preserves the integrity of your property’s exterior surfaces.


In today’s world, where environmental conservation is paramount, DOFF steam cleaning shines as an eco-friendly option. It minimizes the use of harsh chemicals and bleach, which are common in other cleaning processes. Instead, it relies on the natural cleaning power of steam, significantly reducing water usage and chemical runoff, making it a great service for those conscious of their environmental footprint.

Long-lasting results

What truly makes DOFF steam cleaning stand out is its ability to not only clean but also preserve the render. This method ensures that your house or building maintains its aesthetic appeal for a longer period. The gentle yet thorough cleaning prevents the usual wear and tear associated with harsher methods like high-pressure jet washing. It means that the paint and coating on your rendered surfaces remain intact, and the risk of damaging your walls and windows is significantly reduced. By choosing DOFF steam cleaning, you are not just cleaning your property – you are investing in its long-term care and maintenance.

In conclusion, DOFF steam cleaning offers a unique combination of safety, efficiency, and eco-friendliness, making it the preferred choice for homeowners and building managers alike. It stands as a testament to our commitment to providing top-notch render cleaning services that are not only effective but also responsible and sustainable.

wash render


In conclusion, after evaluating various methods to clean render, it’s clear that DOFF steam cleaning stands out as the superior choice. This method perfectly blends effectiveness, safety, and eco-friendliness, crucial aspects to consider when maintaining the aesthetic and structural integrity of your property.

DOFF steam cleaning excels in gently yet effectively removing challenging issues such as algae growth, mould, and accumulated dirt without the harsh impact of chemicals or bleach used in traditional methods like soft wash or high-pressure washing.

One of the key points to note is the precision with which DOFF steam cleaning tackles the job. It addresses not just the visible dirt but also the microscopic spores that can lead to the spread of moss and mould, especially in areas prone to damp and windy weather.

The high temperature of the steam kills these spores, ensuring a deeper, more long-lasting clean. This approach not only saves money in the long run but also preserves the render, especially important in properties with painted or delicate surfaces.

Moreover, DOFF steam cleaning is a testament to our commitment to using biodegradable and environmentally friendly practices. We understand the importance of detail and professional care in every service we provide.

From addressing tiny cracks to covering large surface areas, our equipment and treatment methods are designed to cater to all aspects of render cleaning with the utmost efficiency and care.

As a company deeply rooted in knowledge and expertise, we suggest DOFF steam cleaning as the most effective and safest solution in the market for cleaning render. Whether you are dealing with a residential property or a commercial building, our service ensures that your investment remains clean, well-maintained, and aesthetically appealing.

We invite you to experience the difference with our professional render cleaning services. If you are looking for advice, or if it’s time to give your property the thorough, careful cleaning it deserves, please reach out to us. Our team is ready to provide you with the highest level of service and help you maintain the beauty and longevity of your property.


Frequently asked questions (Q&A)

Q1: What is render cleaning and why is it important?

A1: Render cleaning involves the process of removing dirt, algae, mould, and other contaminants from the exterior surfaces of a property, such as walls and windows. It’s essential to maintain both the aesthetic appeal and structural integrity of the property. Regular cleaning helps prevent damage caused by these contaminants and prolongs the lifespan of the render.

Q2: Can I clean render by myself, or should I hire a professional?

A2: While some minor render cleaning jobs can be carried out by individuals, it’s often best to hire a professional. Professional companies have the right equipment and expertise to effectively clean render without causing damage. They can handle challenging issues like mould and algae, ensuring a thorough and safe treatment of your property.

Q2: Is it safe to use bleach for cleaning render?

A3: Using bleach for render cleaning is generally not recommended, especially for k rend or other delicate surfaces. Bleach can be too harsh, potentially causing damage or discoloration. Professional render cleaning services often use safer, more effective alternatives.

Q4: How does weather, especially wind, affect render cleaning?

A4: Weather conditions, particularly wind, can influence the effectiveness of render cleaning. Wind can dry cleaning solutions too quickly or spread them unevenly, impacting the cleaning process. Professionals can assess and adjust their methods according to weather conditions to ensure optimal cleaning.

Q5: What equipment is used in professional render cleaning?

A5: Professional render cleaning typically involves specialized equipment, such as low-pressure washers, soft washing tools, and DOFF steam cleaning systems. These tools are designed to effectively kill and remove mould, algae, and dirt without damaging the render.

Q6: How often should render be cleaned to maintain my property?

A6: The frequency of render cleaning depends on various factors, including location, climate, and the type of render. Generally, it’s advised to have your render professionally cleaned every 1-2 years to maintain its appearance and prevent the buildup of harmful substances.

Q7: Are there any specific challenges in cleaning rendered walls near windows?

A7: Yes, extra care is needed when cleaning rendered walls near windows to prevent damage to the glass or window frames. Professional cleaners use appropriate techniques and equipment to ensure that the windows are protected during the cleaning process.

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