Typical Roof Coating Costs

Welcome to Quotation Check – Your guide to building costs, prices and charges. This page about roof coating costs forms part of our series into average roof maintenance costs and prices charged by roofing companies in the United Kingdom. You will find our full price list here. This page was last updated on .

Average Cost/Price to Clean and Coat a Roof

Roof coatings are coloured or translucent types of paint/sealers that are spray applied to the tiles. They are usually used to improve the visual “kerb appeal” of the roof.

Homeowners that have issues with excessive roof moss growth may benefit from having their roof cleaned and coated. Although a chemical fungicide treatment may need to be re-applied every few years.

Roof cleaning and coating price examples

We contacted over 30 roof coating companies from various locations in the United Kingdom and asked them to provide a cleaning and roof coating cost for a semi detached house. We also asked a few friends/relatives to get prices and provide us with the paperwork.

Our quotes were all for the following:

  • semi detached house
  • good access all round
  • standard concrete tiles in average condition
  • no remedial work required (cement work, chimney stack etc all in good condition)
  • we wanted the tiles pressure washed, treated with a chemical to prevent moss and finished with two layers of roof coating in brown colour

Not all of our chosen companies actually provided us with a quote. Some didn’t respond, and some initially did but then didn’t show up. Most of the larger companies we got in touch with sent a salesperson to our property, some of which were quite pushy.

We did get enough written quotes for our semi-detached house to calculate an average that we feel is representative of the cost you can expect to be charged for roof coating. We also asked a few friends and family members to get quotes for similar work; the data has been compiled together into the chart below:

LocationMedium Sized BusinessLarger Business (5+ employees)
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London Area£2000.00£2500.00
South, SW and Midlands£1750.00£2500.00
Outer Region and North£1500.00£1750.00

As you can see from the table above, the average cost to clean and coat a roof is around £2000.00.

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If you found our guide to roof coating costs useful, be sure to explore our other researched prices:

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Highest and Lowest Quotes

When we received quotes from our chosen companies we were surprised by the huge difference between the highest and lowest prices:

The lowest quote we received – £850.00

The highest quote we received – £4800.00

The figures above were for the same property, a semi detached house with roof tiles in average/good condition.

Because of the differences in price, we strongly urge you to get several quotes before you proceed with any work.





What Work is Done?

We have done some research into exactly what work is involved with a roof coating refurbishment. There are many guides available on the internet and also some helpful YouTube videos. Most of the companies we contacted will do all or most of the following:

  1. An initial site survey that checks the access up to the roof and the type of tiles, whether they are suitable for painting and also the general condition of the roof.
  2. Setting up of safety equipment. This usually involves scaffold towers to provide roof edge protection or harnesses and roof ladders. Covers and tarpaulins are also placed over patios and flowerbeds.
  3. Replace broken tiles and disconnect gutters from drainage pipes. This is important because they don’t want high pressured water to penetrate into the loft via broken tiles. The gutters must be detached to prevent the muck from blocking the underground soakaway.
  4. Pressure wash the tiles, starting at the top of the roof and working downwards towards the guttering. This is quite a messy task so the roof cleaning contractor may decide to first brush off any excess moss manually before they start the power cleaning process.
  5. Treating the tiles with a fungicidal wash to prevent moss and algae growth underneath the new roof coating
  6. Apply two coats of roof coating in the chosen colour. It is important that there is sufficient drying time between each coating and also after the fungicidal wash is applied.

Roof paint onto tiles

How Long Does the Roof Coating Process Take?

We asked all of our chosen roof coating companies how long the work will take and most seemed to indicate between 2-3 days.

The first day is when the roof is cleaned and the tiles treated with the fungicide. There may also be a lot of cleaning up to do. The first day is also when any remedial work is carried out, such as ridge re-pointing, replacing broken tiles, gutter repairs etc.

The second day is when the first layer of roof coating is applied. If this is done in the summer then the second could be applied later on the same day. However, if the work is done on a cooler day, the drying time will be much longer and they will instead have to come back on a third day to apply the second coat.

If the weather is wet or windy then your job may be delayed, damp conditions make it impossible to correctly apply the coating. Because the paints are applied by a sprayer, they shouldn’t be applied in windy conditions.

Advice

We did a lot of research into roof coating and do not believe these types of paints/coatings should be applied in winter or during damp conditions. It would be best to wait until the summer months, just like you would if you wanted to paint any other exterior part of your property.

While roof coatings can improve the aesthetic appeal of your property, they are not an appropriate alternative to a re-roof should your tiles already be very old and close to the point where they need to be replaced.

Frequently Asked Questions

Q) How long will the coating last?

A) Most coatings come with a 10 year guarantee, but from the research we have conducted 6-8 years is far more realistic.

Q) Will the coating prevent moss growth?

A) No not entirely but it may reduce moss growth in the short term.

Q) Can the roof coating be applied without the roof tiles being pressure washed?

A) No, the roof needs to be thoroughly cleaned first to remove oils, algae, moss and other contaminants that would otherwise prevent the coating from adhering correctly.

What Do You Think About This Price Guide?

What do you think about our guide to roof coating costs and prices?

Have you received quotes for this type of work? How did they compare with our figures?

Feel free to leave a comment below, the team here at Quotation Check would love to hear from you.

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One Response to “Typical Roof Coating Costs”

  1. Peter EvansFebruary 25, 2016 at 11:00 pm #

    l have had a quotation to have my roof done there quote was a lot more than that and my house is up and over there quote was 5 thousand and 8oo hundred pounds l thought that really expensive so l thank you for your surveys l will not be using this company yours

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