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Roof Cleaning FAQ

12/3/2019

36 Comments

 
Is Roof cleaning necessary?
 

If you look around your local areas you will find 80-90% of homes roofs are covered in unsightly moss and algae.
Not only does this look unpleasant to the eye heavy moss growth on the roof can cause damage to your roof over time.
The moss acts like a sponge soaking up the moisture in the air and rainwater.
When the moss then freezes, it expands on the surface which can then lead to cracking in your roofs pointing, lifting of tiles. We have also seen moss eat its way into tiles leading to the surface becoming defaced.
 
How do you clean a roof?
 
The most common ways to clean a roof are either by pressure washing the roof or a gentler approach is soft washing the roof.
 
Pressure washing the roof is carried out via accessing the roof by either using access equipment such as a MEWP (cherry picker) or using rope access and roofing ladders. If the roof is fully accessible some pressure washing the roof can be carried out from a portable scaffold tower and telescopic lances.
 

roof pressure washing
Roof Cleaning in Wolverhampton
Roof Moss removal also know as Soft washing the roof is a way of cleaning the roof without the need for a pressure washer. Again, this is done either via a portable scaffold tower and telescopic roof scraping tools or from gaining access to the roof via a roofing ladder and securing the operator using fall arrest equipment. The bulk of moss is manual removed followed by a moss and algae treatment then applied to kill any remaining moss/algae which in turn results in a cleaner roof over a period of time.
roof moss removal
What chemicals are used to clean roofs?
 

The main chemicals used to clean a roof are sodium hypochlorite based products which give instant results.
The sodium hypochlorite based products are usually sprayed on the roof after the moss has been removed and then washed off as it is not recommended to leave this product on the roof. 
 
Another chemical used is a biocide treatment (DDAC) which is applied to the tiles but instead of being rinsed off this is then left on to work over a period of time with the natural weather cycles.
 
How often should you clean your roof?
 

Once your roof has been cleaned if an application of biocide has been applied after the clean the roof should stay clean for an average of 3-5 years. This time scale depends on the property’s environment as a more rural home is more likely to show signs of regrowth faster than a townhouse.
To keep the roof cleaner for longer maintenance treatment can be applied once the roof is showing signs of regrowth which will then keep the roof cleaner for many years to come. 

Does cleaning your roof damage it?
 
This is a question that gets asked a lot, many people are under the allusion that cleaning your roof will damage the roof tiles taking of a “protective coating”.
An aged concrete roof will already have lost the coloured surface of the tile with the UK’s harsh weather cycles and this is why you find when aged concrete roofs are cleaned they all end up the same colour.
 
Using the correct pressure and nozzle along with using a professional roof cleaning company either the soft wash or pressure washing cleaning option will not cause damage to your roof.
 
We made a little video to show 5 of the most popular roof tiles on UK homes both before and after being pressure washed ​​
As you can see in the video using the correct pressure the roof tiles were not damaged at all.
 
Soft washing the roof is even less harsh as the whole roof cleaning process is carried out using no pressure whatsoever. The moss is removed by handheld tools and the treatment are applied via low-pressure sprayers.
 
How much does it cost to have a roof cleaned?
 
Every roof is different and there are many factors to take into account when pricing a roof clean.
 
When a company comes to quote your roof clean will take into consideration the size of the roof, the amount of moss present on the tiles, access to the roof, tile type and so on.
 
So, it’s not just as easy as saying roof cleaning cost X amount.
 
A guide price for your roof to be cleaned via pressure washing after speaking with many roof cleaning company’s across the UK we found vary from £8-15 per sq.m.
 
To receive an accurate quote a professional roof cleaning company would need to visit the property so they can fully see the roofs access, soiling, size etc…
 
How much does it cost to remove moss from a roof?
 

Soft washing or removing the moss from a roof is usually a cheaper option than pressure washing.
The thing you need to ensure when having your roof soft washed is to find out exactly what product the company will be applying to your roof to after the moss has been removed.
The biocide treatment is what will kill all biofilm and protect your roof from any new regrowth so using a top-quality treatment is essential to ensure you get the best results possible.
The average price for roof moss removal and soft washing a roof we found to be in between the price range of £5-12 per sq.m so on some occasions can be half the price of pressure washing a roof.
Picture
We hope this has helped answer any question or queries you may have had regarding having your roof cleaned, for any further advice or information regarding roof cleaning please feel free to browse our website or call us on 01952 327474 where we will more than happy to answer any question you may have.
36 Comments
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5/6/2020 12:26:27 pm

Excellent information you shared there, thank you a lot !
Great article !

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5/10/2020 05:25:43 pm

Great article thanks you for sharing !!

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8/3/2020 11:55:29 am

Great info you shared! Thank you so much!

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8/27/2020 12:41:39 pm

I like that you explained everything in detail. Thanks for sharing!

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10/12/2020 08:53:25 pm

Is roof cleaning part of your service? That's awesome because roofing contractors more often does not include the roof cleaning on their work. Since it is another job that requires another profession. I can see the client satisfaction ahead of you, keep it up.

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10/28/2020 03:01:24 pm

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11/16/2020 10:55:22 pm

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11/27/2020 04:19:56 pm

Thanks for sharing this roof cleaning blog post glad that I found your post.

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10/3/2021 06:47:26 pm

Cleaning a roof is really important. This post was great! thank you.

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5/27/2022 02:32:27 pm

This can destroy your roof.Cleaning can extend the duration of a roof's ability to function. Roof cleaning is the process of removing algae, mold, mildew, lichen and moss from roofs. Also cleaning oxidation on metal roofs.

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8/16/2022 03:47:08 pm

Amazing guide regarding roof cleaning .

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9/28/2022 07:19:40 pm

very clear and good article easy to understand. Thank you

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11/7/2022 06:31:02 pm

I appreciate you sharing. Your piece about roof cleaning was interesting to read. This content will be bookmarked for sure.

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11/22/2022 07:21:39 am

Roof cleaning is an essential part of property maintenance. Cleaning a roof allows you to remove organic and inorganic substances from the tiles or shingles and check the surface for any damage. Keeping a roof clean not only helps to improve its aesthetic appearance, but can also extend its lifespan.

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12/15/2022 11:45:41 pm

You've written it so nicely, and you've come up with some great ideas. This is a fantastic post!

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12/28/2022 06:06:04 am

Regular cleaning can double your tile roof's lifespan. Without regular cleaning and maintenance, your tile roof will not last as long as it should. By having your roof cleaned, you can extend its life expectancy by up to twice it's remaining life

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1/26/2023 02:34:26 am

The blog post provides a comprehensive FAQ on roof cleaning, covering topics such as the importance of regular cleaning, the different types of cleaning methods, and the cost of cleaning. The information presented is clear and easy to understand, and the post is well-organized. Overall, it is a useful resource for anyone interested in learning more about roof cleaning.

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3/22/2023 10:23:17 pm

Roof cleaning is an important part of home maintenance that should be done regularly. With the proper safety measures and correct methods, you can ensure the longevity of your roof and reduce the buildup of debris and contaminants that can cause damage over time.

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4/7/2023 12:54:27 am

Thanks for sharing such great information. It is really helpful to me. I always search to read quality content and finally I found your post. Keep it up, and keep posting!

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6/19/2023 02:09:53 am

I have read your article about roof cleaning, it is very informative and helpful for me .I admire the valuable information you offer in your articles.

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11/27/2023 12:48:11 am

When we think about cleaning the exterior of our homes, we often forget about the importance of roof cleaning. A clean roof not only extends its lifespan but can also prevent debris and dirt from falling onto our windows. So, before you tackle window cleaning, don't forget to check the roof for any maintenance needs to ensure your windows stay spotless.

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4/4/2024 07:28:06 am

Addressing the necessity of roof cleaning, the article provides valuable insights into the potential damage caused by moss and algae growth over time, emphasising the importance of maintenance.

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4/4/2024 07:43:09 am

When it comes to cleaning a roof, two common methods are pressure washing and soft washing. Both methods have their advantages and are chosen based on factors like accessibility and the level of cleaning required.

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4/4/2024 07:45:10 am

Interesting insights into the necessity of roof cleaning and its potential damage over time.

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4/29/2024 09:41:43 pm

This emphasizes the importance of roof cleaning for maintaining its integrity and appearance.

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5/22/2024 10:30:32 pm

Thanks for the detailed information! Using chemicals like sodium hypochlorite and biocide treatments can effectively clean roofs and keep them free of moss and algae for years, maintaining their appearance and integrity.

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6/18/2024 08:45:44 am

Fascinating perspectives on the importance of roof cleaning and its long-term impacts.

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6/19/2024 07:37:35 am

Excellent piece! It balances fun and information perfectly. Appreciate the share! For roofing services, don't hesitate to reach out. We're here to help.

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6/28/2024 08:10:00 am

I love how informative and well-structured your posts are! Should you ever require roofing services, our team is dedicated to delivering excellence and exceeding your expectations.

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7/4/2024 08:08:42 am

This is exceptional work! Truly inspiring. If you want roofings that complement such quality, we’re here to assist.

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7/10/2024 07:29:52 am

Impressive work! We love seeing such dedication to quality. If you’re looking for premium roofing services, we’ve got you covered.

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7/22/2024 07:43:31 am

Fantastic post! Our roofing services are just as fantastic if anyone's in need.

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10/12/2024 05:42:19 am

I have been having problems like this! So happy to have read this, now it's time to try it.

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