Roofs are absolutely essential in protecting your building from the elements, and keeping them clean often goes overlooked.
Over time, dirt, moss, and algae can build up, affecting the appearance and overall condition of your roof.
So, if you’re wondering how much roof cleaning costs in the UK, you’re in the right place.
In this guide, we will break down some of the main factors that influence the price of roof cleaning, from building size to access to the roof.
Whether you’re maintaining a commercial property or dealing with the visible buildup of dirt, understanding what drives up the cost of roof cleaning can help you plan ahead and budget more effectively.
What is Roof Cleaning?
Roof cleaning is the process of removing moss, algae, dirt, and other debris that builds up on your roof over time.
Regular cleaning will help to keep your roof in its best condition. It will also prevent potential issues, like blocked drainage or damage to the surface, from occurring.
Depending on your type of roof, cleaning may involve soft washing, gentle scraping, or using specialised treatments that help to break down biological growth without causing harm to the materials on the roof.
If you have an older, more delicate roof, pressure washing will be avoided completely to ensure no materials are damaged.
Why Regular Roof Cleaning is Important
Dirt buildup can trap moisture on your roof. This can lead to broken tiles, blocked drains, and gradual wear.
In colder months, this trapped water can freeze and expand, increasing the likelihood of cracks and leaks, two major safety concerns.
Regularly having your roof cleaned will help to prevent this damage from happening, extend its lifespan, and prevent any costly repairs down the line.
A clean roof supports proper water flow into your gutters and downpipes, and this is especially important if you have a flat or shallow-pitched roof.
Not only that, for commercial properties, a clean roof will make a noticeable difference to the overall appearance of your building, something that is important to both your tenants and clients.
Factors That Influence Roof Cleaning Costs
1. Property Size
As you would expect, larger roofs require more time, labour and cleaning supplies.
Due to the scale of the work involved, commercial buildings and multi-unit properties tend to cost more to clean than smaller residential homes.
2. Roof Type and Material
Cleaning methods differ depending on the material used on your roof.
Slate, clay tiles, flat roofs, and metal surfaces will all require their own unique cleaning method.
Some roofs require gentle, low-pressure cleaning to avoid causing damage.
This type of specialised cleaning will typically increase the overall cost.
3. Roof Condition
A well-maintained roof will be quicker to clean, which means it will also be cheaper.
But if your roof is covered in thick moss or stains, naturally, it will take longer to clean.
Roofs with a large amount of dirt buildup may even require special treatments.
These are all things that drive up the price.
4. Height and Accessibility
For multi-storey buildings, extra equipment like cherry pickers or rope access will be needed to ensure your roof can be reached safely.
This increases cleaning time and also requires a health and safety assessment before the job.
All factors that can drive up the price.
5. Type of Cleaning Service
Depending on the type of cleaning you require, the prices will vary.
Whether you need soft washing, pressure washing, or specialised treatments.
Some cleaning methods also include preventative maintenance to help slow the future regrowth of dirt and moss.
Roof Cleaning Cost Calculator
We’ve created this estimate pricing guide to give you an idea of the prices you can expect to pay for roof cleaning, depending on your building type and complexity.
Prices may vary depending on your location, the condition of your roof, and the access required.
Property type | Estimated cost | Factors affecting price |
Small House or Bungalow | £250 – £400 | Size of roof, level of moss, and ease of access. |
Semi-Detached or Two-Storey House | £400 – £650 | Roof pitch, tile type, height, and potential dirt buildup. |
Large Detached Home or Low-Rise Commercial Building | £650 – £900+ | Total roof area, cleaning method, and condition of the surface. |
Multi-Storey or Large Commercial Property | £900 – £1,500+ | Height, access equipment, safety needs, and overall scale of the project. |
It’s important to note that these costs are just rough estimates. For more accurate pricing, it’s best to contact us for a tailored quote based on your property’s specific requirements.
How Long Does Roof Cleaning Take?
The time it takes to clean a roof depends on the size of the property, the amount of dirt buildup, and the ease of access to the roof.
For small houses or bungalows, cleaning may only take half a day.
For medium-sized homes, a full day will typically be required.
For larger and more complex commercial buildings, two days or more may be needed. Especially if additional safety equipment is required.
Roofs that haven’t been cleaned for a long time may also need additional treatment, and this would add to the time required.
What's Included in a Professional Roof Cleaning Service?
Roof cleaning isn’t just about improving the appearance of your building, it’s also about making sure everything works as it should once the job is complete.
A typical service will cover more than just the cleaning of the surface. Here’s what it usually involves:
- Surface preparation, including the safe removal of moss, algae, and loose debris
- A tailored cleaning method, like soft washing or steam, depending on the type of roof
- Treatment application, often a biocide to help slow any future regrowth
- A general condition check, noting down any cracked tiles or signs of water damage
Each step is designed to leave your roof clean, functional, and ready to handle the elements.
How Often Should Roofs Be Cleaned?
There isn’t a one-size-fits-all answer, but most roofs should be cleaned every 3 to 5 years.
How often your roof needs cleaning really does depend on the surroundings of your building.
Properties shaded by trees or exposed to damp will often collect moss and algae much faster. Meaning that they may need cleaning more often.
The same also applies to buildings in high-pollution areas or near the coast, where grime tends to build up much quicker.
A visual check of your building once a year is a good habit to get into, especially after winter, so any early signs of growth or blocked drainage can be caught before they cause problems.
Get a Free Roof Cleaning Quote Today
Roof cleaning might not be the first thing to do on your maintenance list, but it plays a big role in keeping your building safe, functional, and looking its best.
From preventing structural damage to improving drainage and kerb appeal, it’s a job worth doing properly.
The cost can vary depending on several factors, like the size of your property, the type of roof, and how easy it is to access, but understanding what’s involved makes it much easier to plan ahead.
Whether you’re managing a commercial site or looking after a home, regular roof cleaning helps protect your investment and can save you money in the long run.
For a more accurate estimate, get in touch with All Clean London.
With over 40 years of experience, we’ll provide you with a professional service that ensures your roof remains in top condition.
