Everything You Need to Know About Roof Cleaning – Including Prices

With so much moss, algae, dirt and pollution on many roofs in the UK, it’s no surprise that roof cleaning is a booming business with both traditional roofing firms and specialist cleaners carrying out this type of work.

But how much does a typical roof clean cost, what work is involved and how long does it stay looking fresh?

Photos of Roof Cleaning

Here are a few photos which show you what you get with a typical roof clean:

Our Price Guide to Roof Cleaning

We know that outdated price guides can be frustrating, that’s why we last updated this page on the .

The prices you’ll see on this page are based on quotes from UK based roof cleaning firms that we contacted in 2015 and again in 2018.

Use our guide to get an idea of how much this type of work costs.

We can also point you in the right direction so you can get your own written quote.

Reference for Quotation Check

How are Roofs Cleaned – What is the Process?

Most roof tiles in the UK are made from clay or concrete and these materials are prone to moss growth, lichen and experience a general build-up of dirt and pollution.

While this rarely causes any damage to the roof tiles themselves, it can block gutters and damage cement on the roof.

Moss and lichen are also very unsightly and this is the main reason consumers choose to clean their roofs.

Roof cleaning has become popular in the United Kingdom over the last decade. This is partly due to an increase in moss growth, which is caused by improvements in air quality.

With fewer chemicals such as lead in the air, there has been a notable increase in moss growth on paths and roof tiles in the UK.

Most roofs are cleaned with a pressure washer, the roof is then treated with a moss inhibitor such as a fungicide which should prevent any significant moss or lichen growth for between three and five years.

If you’re concerned about the potential damage from a pressure washer, moss and lichen can be removed manually with a brush and scraper instead.

What Are Roof Coatings and Sealants? Are They Needed?

Roof coatings and sealants are protective products that are sprayed onto the roof tiles, usually to alter their colour.

The prices below do not include the cost to treat the tiles with a coloured sealant or coating, this price is covered by another page on this site.

Coatings/sealants are optional extras which should only be applied to a roof that has been thoroughly cleaned with a pressure washer.

They should not be applied to roofs that have moss removed manually as there will still be some dirt and contaminants on the tiles that may prevent the coating from adhering properly.

A Warning From Trading Standards

Roof cleaning is one of those home improvement projects that seems to attract  “cowboy” workers and other unqualified and inexperienced traders.

The UK’s Trading Standards authority have put out several warning notices in recent years, advising homeowners to be wary of roof cleaning and coating cold callers.

The quotes on this page are examples of roof cleaning costs/prices from reputable traders and not door-to-door cold callers.

Example 1 – Cost to Clean a Roof by Pressure Washing

Roof jet cleaning photoThis example cost is to thoroughly clean the roof tiles with a powered pressure washer.

We last updated these prices in 2018.

Here’s a works schedule:

  • Erect access equipment up to the roof (roof ladders, access towers, ladders, etc.)
  • Cover the ground with a cover/tarpaulin for protection
  • Thoroughly clean the roof with a power washer
  • Inspect the roof, replace any broken tiles and complete any minor roof repairs
  • Treat roof with a chemical moss inhibitor such as a fungicide
  • Lower access equipment and remove all waste material

As you can see from the table below, the average cost to pressure wash a roof is £480.00 +vat if applicable.

LocationSmall Business /TraderLarge Business
London Area£500.00£750.00
South, SW and Midlands£450.00£625.00
Outer Region and North£450.00£500.00
Need a Custom Price? >Compare Up To 3 Personlised Quotes Here

Example 2 – Price to Remove Roof Moss Manually With Scraper and Brush

This price below is to remove the moss manually with an instrument and a brush.

This option is preferred by homeowners concerned about the use of high-powered pressure washers on their roof tiles.

This “manual” moss removal process involves:

  • Erecting ladders and other access equipment to the roof
  • Sheeting over any flower beds/patio etc with a tarpaulin
  • Remove the roof moss with a scraper
  • Brush off the dust from the roof
  • Check the roof for any damage and carry out minor repairs
  • Treat the roof with a fungicide chemical treatment such as a fungicide
  • Clean the site and remove all waste material

This price/cost quote is for a simple “up and over” type roof:

LocationSmall Business /TraderLarge Business
London Area£500.00£800.00
South, SW and Midlands£450.00£600.00
Outer Region and North£400.00£500.00
?Need a Custom Price? >Compare Up To 3 Personlised Quotes Here

Get Your Own Quote

We think our prices are a great resource but we know they’re not a substitute for a for a written quotation from a local tradesperson who has had the chance to inspect the roof first.

We can help you get a quote:

  • Submit details of your roof cleaning project
  • Arrange a visit for a brief inspection
  • Check ratings, reviews from previous customers
  • No obligation on your part
  • Leave your own feedback upon completion – this will be posted on the website for others to see
Get a Roofing Price Online

Photos of The Roof Moss Removal and Roof Cleaning Process

Roof moss on tiles

Manually Removed Roof Moss

power cleaning roof

Power Pressure Washing a Roof

What is Quotation Check?

The prices we publish here on Quotation Check are based on fixed prices and written estimates we source from tradespeople and businesses operating the UK.

The method we employ is simple; we calculate an average cost from traders located at several locations around the country.

We then display that cost on our pages, we also ask probing questions about the project and pass on any relevant hints and tips to our readers.

You can read more about Quotation Check here.

Our visitors use our site as a guide to home improvement prices in the UK.

Get a Quote Today

We have partnered with Rated People, the United Kingdom’s leading consumer quotation service to supply you with up to 3 written quotes for roof cleaning.

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4 Responses to “Everything You Need to Know About Roof Cleaning – Including Prices”

  1. ayaApril 3, 2015 at 10:28 am #

    This is interesting cleaning my own roof by using water pressure. But I always struggle climbing up the roof, Using thin ladder always freaks me out. I love this idea i found it very helpful for someone like me saving up. I wanted to do it myself, But this made me realised that i needed to find a local company!

  2. garyMay 18, 2015 at 3:16 pm #

    Just treat the tiles with a moss killing chemical that is all that’s needed.

  3. JulieMarch 29, 2017 at 9:16 pm #

    Enjoyed the article, it was very informative. I think you have to be careful using high pressure cleaning on roofs as it can damage the surface and cause leaks if you go too far. A softwash cleaning process is preferable if available.

  4. Tile RescueOctober 29, 2018 at 6:37 pm #

    Since it can be a specialized kind of equipment, another
    option to try if you’re looking for any grout cleaning machine is to use tile care and carpet cleaners firms that are inclined out of business and looking to liquidate.
    However, people who do hire professional tile cleaning could have floors that may shine and stay
    longer compared to the average ones. If your pool is within great shape
    and only needs cleaning, then you might choose to build a normal cleaning schedule in order
    to avoid calcium buildup.

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