Roof cleaning cost guide
How much does roof cleaning cost?
A fair price for a roof clean depends on the roof, the growth and how it is reached. This guide shows what to ask, what a quote should say and which methods to avoid.
Asking what you should pay to have a roof cleaned is a fair question with an awkward answer. A roof clean is priced after a survey rather than from a published figure, because the work itself varies far more than people expect. A small, low roof with a light coat of green is a different job from a tall terrace with thick moss in every valley, and a quote for one tells you nothing about the other.
So this guide does not offer a figure. It sets out what drives the price, which methods are worth paying for and which are not, what a written quote should name so you can compare two of them properly, and which neighbouring costs are published by sources we can name. You will finish able to read a quote, ask the right questions of any firm, ours included, and spot a price that is low because the method is wrong.
01Key points
Why a roof clean is priced after a look
A roof clean looks like a standard job, because the result is easy to describe: moss, algae and lichen gone, gutters clear, roof tidy. The effort needed to get there is not standard at all, and nobody can see it from the pavement. Three things change it most.
For that reason we price after a survey, and the figure is one written total price for the whole clean. We are not trying to hide the number. A price given without seeing the roof is a guess, and it can be wrong in the direction that leaves you paying for the difference later.
Our roof cleaning and moss removal page lists what the visit covers, from the first look at the growth to clearing the gutters once the roof is done.
- How much is growing. A thin film of algae comes off with a gentle treatment. A thick cushion of moss has to be lifted by hand, working from the ridge downwards, and it can take a long time on a large slope.
- The roof covering and its condition. Concrete tiles, clay tiles and slate are handled differently, and a roof with loose, cracked or slipped tiles is handled more carefully still.
- How the roof is reached. A bungalow can be reached with ladders and a crawling board. A tall house on a narrow street may need scaffolding, which is more setting up and may need a highway licence.
02Price
What sets the price, in the order it usually bites
When two quotes for the same house differ, look for the cause in this list. It is also a list you can use to work out whether a very low price can possibly be right.
Roof cleaning cost questions
Is a very cheap roof clean a warning sign?
It can be. A low price may mean a jet wash, which Marley does not recommend, or gutters left uncleared, or no debris taken away. Ask what the method is, what is covered and whether VAT is included before you compare it with a higher quote.
- Roof area and pitch. A bigger slope takes longer, and a steep one takes longer again because the work has to be done safely at an angle.
- Height and access. Anything that needs scaffolding adds to the job, and a licence is needed where scaffolding stands on the highway.
- The amount and type of growth. Moss, algae and lichen need different treatment, and the thickness decides how much has to be lifted by hand.
- The condition of the roof. Cracked tiles, failed mortar and loose ridge tiles slow the work and may need to be dealt with before cleaning is sensible.
- Extras that belong with it. Clearing gutters and downpipes, treating a conservatory roof, applying a coating, and removing the waste from site.
Timing can matter too. Wild birds matter here. Under section 1 of the Wildlife and Countryside Act 1981, anyone who intentionally damages a wild bird's nest while that nest is in use or being built commits an offence, so an active nest on the roof pauses the work. A pause like that is better settled before you agree a date than discovered on the day.
None of these items arrives as a separate charge; together they make one total price. When a quote seems low, ask which of them it has left out.
03Side by side
Methods: what you are really paying for
Two firms can quote very different prices for the same roof because they are not doing the same work. The method is the single most useful thing to ask about.
The third row is the one to be wary of. Tile maker Marley advises against high powered jetting of a roof, because the force can damage the top layer of tile or slate and shorten the roof's expected life considerably. A quote built on a jet wash may look lower because the work is quick, but the harm to the roof shows up later, in years of life lost. We do not pressure wash the roofs we clean, and our page on pressure washing a roof explains the reasoning.
A good clean ends with the debris out of the gutters and the roof left as you would want to find it, not with moss washed into the drains and a blocked downpipe a week later. It also ends with a conversation: we tell you what the surface looked like once the growth was off, and whether anything underneath needs attention. That report is part of what the price pays for, and it is the reason a clean by someone who knows roofs is worth more than a clean by someone who owns a machine.
| Method | What it does | Ask |
|---|---|---|
| Lifting by hand | Removes thick moss without force on the tiles | Is the debris collected, not washed into the gutters? |
| Soft wash with a treatment | Kills algae and lichen at low pressure | What is applied, and does the quote say so? |
| High pressure jet | Blasts the surface clean | Why is it being used on a roof? |
04Quotes
What a written quote should name
You do not need a long document, but you do need a clear one. If a quote for roof cleaning does not say each of these things, ask for it to be added before you agree.
Does the price change with the type of roof tile?
It can, because concrete tiles, clay tiles and slate are handled differently and each wants a method suited to its surface. A roof with fragile or already damaged tiles also needs slower, more careful work, so we look at the covering before pricing the clean.
- The method, in words you understand: hand-lifting, soft wash, or something else.
- The parts of the roof covered, including the ridge, any valleys and any outbuilding.
- Whether gutters and downpipes are cleared as part of the job.
- What happens to the moss and debris.
- Whether scaffolding or other access equipment is needed, and who arranges any licence.
- Whether VAT is included.
- What happens if cracked, slipped or missing tiles are found.
On that last point, a roof clean often reveals things that the moss had been covering. We tell you what we find, show you photographs, and do not repair anything until you have agreed it. A repair found during a clean is quoted separately and in writing, so that the clean itself stays at its agreed total and the extra work is your choice.
Where scaffolding is needed, we arrange the licence with our scaffolder, and that sits inside the one written total.
Finally, look at the date and the validity. A quote should say how long it stands and what would change it, such as extra growth found under the visible moss. A firm that cannot say what would change its price has not thought about the roof, and a clear sentence on this point protects both sides from an argument on the day.
05Costs
Published costs that sit next to a roof clean
We have no roof cleaning figure from a source we can stand behind, so we do not print one. What is published is the cost of the jobs that tend to sit beside a clean, and those give some scale. All are third-party figures, never ours.
| Job | Published figure | Source |
|---|---|---|
| Clearing all gutters, front and back | £75 to £350, excluding VAT | Which?, November 2025 |
| Replacing one to six standard tiles | £75 to £400, excluding VAT | Which?, November 2025 |
| An average roof repair | Around £650 in 2026 | MyJobQuote, 6 October 2026 |
The Which? figures come from a survey of 11 of its Trusted Traders and include labour and materials; the group says prices in London and the South East are likely to sit towards the top of its scale. MyJobQuote states no VAT basis for its average, so read that figure with care.
Why do those matter on a page about cleaning? Because the sensible question after a clean is not only what it cost but what the roof needs next. A few broken tiles uncovered by a clean fall inside the Which? range above. A roof that needs wider work is better known about on the day than discovered after a second visit, and the same applies to a gutter that has been clogged for years and turns out to need more than clearing. The published figures are there so that none of those findings comes as a shock, not to suggest that a clean will uncover trouble.
06In brief
When a clean is not the right spend
Cleaning is not always the right use of money, and we tell you when it is not. Three situations are worth knowing about.
Can I get a price over the phone from a photo?
A photo can start the conversation, but it cannot show the thickness of moss in the valleys, the state of the tiles beneath it or how the roof is reached. We would rather look, so that the one written total price you receive is one you can rely on.
- A roof that has run most of its course. HomeBuilding gives approximate lifespans of 40 to 50 years for plain concrete tiles and 60 to 80 years for clay tiles, and a roof close to those ages with loose or crumbling tiles is better served by a survey of what it needs than by a clean on top of a failing covering.
- A roof where the moss is a symptom of something else, such as a gutter that overflows onto the slope or a shaded face that never dries. Cleaning without dealing with the cause means the growth returns, and our page on how long a roof clean lasts covers what affects that.
- A roof with tiles that are cracked or slipping. A clean can disturb them, so the order matters: assess, repair what needs repair, then clean. Our page on whether moss damages roof tiles puts the question of urgency in perspective.
Nothing is gained by cleaning a covering that needs replacing, because the money is better held for the right job. Once we have looked, we give one of three verdicts, clean, repair or replace, and one written total price for the work we recommend. If the verdict is clean, the job goes ahead as quoted; if it is something else, we explain why, and what the roof will need before a clean is worth doing.
Tell us what's wrong with the roof.
You'll get one written total price.