Cleaning the exterior: How to wash your facade successfully
How do you achieve a clean and long-lasting facade? Regular washing can prevent damage, extend the lifespan of your home, and preserve its original beauty. This guide helps you understand why, when, and how to clean your facade—without compromising safety.
Why is it important to clean your facade regularly?
Extend the lifespan of your home
A clean facade is not just visually appealing—it also serves as your home’s first line of defence against the elements. By washing your facade and removing accumulated dirt, pollutants, and organic material, you prevent these substances from penetrating the surface and causing long-term damage.
This is especially important for timber facades, as moisture and dirt can lead to rot if left untreated. On rendered or brick facades, cleaning is essential to prevent dirt from settling into the surface, which can otherwise cause lasting discoloration or gradual degradation of the material.
Prevent mould, algae, and grime
A clean facade is less susceptible to mould, algae, and other microorganisms. These can not only discolour your facade but also cause more significant damage over time. Regular cleaning effectively removes spores and nutrients that these organisms need to grow. This is particularly important in damp climates or on shaded facades, where the risk of growth is higher.
When is the best time to clean your facade?
Best time of year
Spring and autumn are the ideal times to clean your facade. The weather is generally mild and slightly drier, making it easier both to clean and to allow the facade to dry properly. Spring is particularly suitable, as it allows you to remove winter dirt and pollen before the summer months. Summer can also work, especially if you plan to paint afterwards, as lower humidity helps paint dry more quickly and evenly.
Weather conditions to avoid
Certain weather conditions can make cleaning difficult. Watch out for:
- Strong winds
- Extreme heat or direct sunlight
- Rain and high humidity
- Frost and cold temperatures
Step-by-step guide: Cleaning your facade yourself
1. Make sure you’re prepared
Start by inspecting the facade for any damage or loose elements. It may be wise to use protective equipment such as gloves, safety goggles, and non-slip shoes to prevent injuries. Ensure you have a stable ladder or scaffolding if working at height.
2. Choose the right cleaning agent
When selecting a cleaning agent, consider the level of dirt and the type of material your facade is made from. Using the right product for the right material minimises the risk of damage and gives a better result:
- Timber facades should be cleaned with mild, biodegradable cleaners to protect the wood’s natural oils.
- Brick facades should not be cleaned with acidic products, as these can discolour the brick.
- Metal facades should not be cleaned with abrasive agents, as they can scratch the surface.
- For rendered facades,particularly lime- or KC-based renders, you should avoid chemical cleaners that may affect adhesion of new render layers.
At Cleano Production, we manufacture eco-friendly facade cleaning products for those who wish to offer cleaners that are gentle on both facades and the environment. You can either label our existing products from Cleano Production with your own branding or develop a fully customised product range using our private labelsolution.
3. Protect windows and surrounding surfaces
Before you start cleaning, it’s important to protect nearby surfaces and objects. Cover windows, plants, outdoor furniture, and anything else that could be damaged by water or cleaning agents. Windows can easily be covered with plastic sheeting to prevent water and cleaners from seeping into frames and sills.
4. Clean and rinse the facade
Begin washing from the top and work your way down. Use a soft brush or sponge to avoid scratches. Sometimes a pressure washer may be needed, but take care not to damage the facade material.
After cleaning, it’s essential to rinse the facade thoroughly with clean water to remove all traces of cleaning agents and dirt. Rinse from top to bottom for the best results.
5. Aftercare: What to do if stains remain
If stains persist after the initial cleaning, they may require separate treatment. For stubborn marks, you can try a mild bleach solution or a specialised cleaner designed for that type of stain. Always test on a small, inconspicuous area first. If the stains remain, consider professional help or repainting the facade.
Common mistakes when cleaning facades
Excessive pressure
Using too much pressure is a common mistake that can damage the facade, causing cracks, chips, or even removing paint and surface layers. Start with lower pressure or a gentler cleaning method, increasing gradually if needed.
If using a pressure washer, it’s particularly important to be careful and clean with a wide spray pattern. Always test on a small, less visible area first to ensure the pressure is safe.
Wrong cleaning agent for the material
Different facade materials require different types of cleaners. Strong chemicals can damage timber or discolour brick. Always check that the cleaner is suitable for your facade and, where possible, use eco-friendly, pH-neutral products. Test on a small, discreet area before applying to the entire surface.
Ignoring safety precautions
When cleaning a facade, don’t underestimate the risks of working at height, handling chemicals, or using pressure equipment. Always use appropriate protective equipment such as goggles, gloves, and non-slip shoes. Be careful with electrical equipment and ensure all connections are protected from water.
Frequently asked questions about facade cleaning
How often should I clean my facade?
Which cleaning products are best for different types of façades?
Can facade cleaning damage the paint?
We manufacture your cleaning products
At Cleano Production, we have extensive experience developing product ranges for clients in homecare, commercial kitchens, the automotive industry, retail and more. Contact us today to start creating a product that reflects your market vision.