Question 1

Why choose Skyhawk Exterior Cleaning instead of the cheapest quote?

Accepted Answer

Many roof cleaning companies offer only one method of cleaning. We offer both low-pressure washing and specialist waterless roof scraping systems, allowing us to recommend the safest solution for your specific roof. Every roof cleaning project includes gutter clearing, biocide treatment, photographic reporting of any defects found, full clean-down of affected areas, public liability insurance and our 2-Year No Moss Return Guarantee.

Question 2

What's the difference between roof scraping and roof washing?

Accepted Answer

Roof scraping removes the bulk of moss using specialist scraping tools and compressed air systems, while roof washing uses a controlled low-pressure cleaning system to remove moss, dirt and organic growth. Both methods are followed by a professional biocide treatment to kill remaining spores and prevent regrowth.

Question 3

Which roof cleaning method is best for my roof?

Accepted Answer

The best method depends on the age, condition and construction of your roof. Older roofs, roofs without modern membranes or roofs with previous leak concerns may benefit from our waterless scraping system. Modern roofs in good condition are often suitable for low-pressure washing.

Question 4

Is roof washing safe?

Accepted Answer

When carried out correctly using specialist low-pressure equipment, roof washing is safe for suitable roofs. We never use the same high-pressure techniques used for cleaning patios or driveways.

Question 5

Will pressure washing damage my roof?

Accepted Answer

High-pressure washing can damage roofs. We do not use traditional high-pressure washing methods. Our low-pressure roof cleaning system is specifically designed for roof surfaces.

Question 6

Do you clean roofs without using water?

Accepted Answer

Yes. We offer a specialist compressed-air roof scraping system which removes moss without the need for washing the roof.

Question 7

Why do some roofs need scraping instead of washing?

Accepted Answer

Some older roofs, roofs without modern membranes, listed buildings and roofs with known leak concerns may be better suited to a waterless cleaning approach.

Question 8

Will roof cleaning cause leaks?

Accepted Answer

A properly maintained roof should not leak following professional cleaning. We always discuss any known roof issues before work begins and recommend the most appropriate cleaning method.

Question 9

What if my roof already has damaged tiles?

Accepted Answer

Roof cleaning often reveals existing cracked, slipped or damaged tiles that were previously hidden beneath moss. We photograph and report any defects we discover.

Question 10

Can roof cleaning damage roof tiles?

Accepted Answer

No. Neither our low-pressure washing system nor our compressed-air scraping system is designed to damage roof tiles. However, existing defects hidden beneath moss may become visible once the roof is cleaned.

Question 11

My roof is over 50 years old. Can it still be cleaned?

Accepted Answer

In many cases, yes. We regularly clean older roofs after assessing their condition and selecting the safest cleaning method.

Question 12

Will my roof look like new afterwards?

Accepted Answer

Not always. Moss, algae and dirt can be removed, but the original colour of the tiles depends on their age and condition.

Question 13

Why do some roofs become lighter after cleaning?

Accepted Answer

Years of organic staining can make a roof appear darker than its true colour. Once cleaned, older tiles may appear lighter.

Question 14

Will roof cleaning remove lichen?

Accepted Answer

Yes, although some lichen staining can take several months to disappear completely after biocide treatment.

Question 15

How much moss will be removed?

Accepted Answer

A low-pressure roof wash typically removes around 99% of visible moss immediately. Our compressed-air scraping system typically removes around 90–95% on the day, with remaining traces breaking down after treatment.

Question 16

Why is biocide applied after roof cleaning?

Accepted Answer

Biocide kills remaining moss spores, algae, lichen and biofilm that may still be present after cleaning.

Question 17

How long does biocide take to work?

Accepted Answer

Biocide begins working immediately, but full results continue to improve over several weeks and months as weathering removes dead organic growth.

Question 18

Is BAC50 biocide safe?

Accepted Answer

We use BAC50, one of the UK's most widely used professional roof treatment products, applied in accordance with manufacturer guidance.

Question 19

Do I need a biocide treatment if the roof has been scraped?

Accepted Answer

Yes. The biocide treatment is essential for killing remaining spores and slowing future regrowth.

Question 20

Do you offer a guarantee?

Accepted Answer

Yes. We provide a 2-Year No Moss Return Guarantee on qualifying roof cleaning projects.

Question 21

What happens if moss comes back?

Accepted Answer

If moss returns during the guarantee period, we will return and reapply the treatment free of charge.

Question 22

How often should a roof be treated after cleaning?

Accepted Answer

We generally recommend a maintenance biocide treatment every 2 years to keep the roof in optimum condition.

Question 23

Will I ever need another full roof clean?

Accepted Answer

In many cases, no. Regular maintenance treatments can help prevent the need for future full cleans.

Question 24

Do you clean the gutters after roof cleaning?

Accepted Answer

Yes. All roof cleaning packages include clearing the gutters and checking downpipes.

Question 25

What happens to all the moss removed from the roof?

Accepted Answer

We can leave it for composting, place it in garden waste bins, or leave it bagged for disposal depending on the property and client preference.

Question 26

Will my neighbour's property be affected?

Accepted Answer

Roof cleaning can be messy. We take precautions to protect surrounding areas and always clean up afterwards.

Question 27

Should I tell my neighbours?

Accepted Answer

Yes. We recommend letting neighbours know roof cleaning is taking place, particularly for terraced or semi-detached properties.

Question 28

I have solar panels. Should the roof be cleaned first?

Accepted Answer

Yes. Cleaning the roof before solar panel installation prevents moss becoming trapped beneath panels and helps reduce future maintenance issues.

Question 29

Can you clean around bird spikes and pigeon deterrents?

Accepted Answer

Yes. We regularly clean roofs with bird spikes, netting and solar panel protection systems installed.

Question 30

Can you clean wall-hung tiles?

Accepted Answer

Yes. We typically use specialist chemical treatments on wall-hung tiles rather than pressure-based cleaning methods.

Question 31

What if I have a conservatory?

Accepted Answer

We regularly work around conservatories and extensions and can also provide conservatory roof cleaning where required.

Question 32

Why do customers say their roof looks like new after cleaning?

Accepted Answer

Many customers are surprised by how much brighter and cleaner their roof appears after professional moss removal and treatment. Removing years of moss, algae and organic growth can reveal the original colour of the roof tiles.

Question 33

Why do customers recommend Skyhawk Exterior Cleaning?

Accepted Answer

Customers regularly mention our professionalism, communication, attention to detail, cleanliness and the quality of the finished results. Many clients come to us through recommendations and repeat business.

Question 34

Do you clean up after roof cleaning?

Accepted Answer

Yes. We take pride in leaving properties clean and tidy. Moss and debris are collected where practical, gutters are cleared and surrounding areas are cleaned before we leave.

Question 35

Will I receive clear communication throughout the project?

Accepted Answer

Yes. Many reviews mention our communication from initial enquiry through to completion. We explain the process, discuss suitable cleaning methods and keep customers informed throughout.

Question 36

What makes Skyhawk different from other roof cleaning companies?

Accepted Answer

We focus on selecting the safest and most appropriate cleaning method for each roof rather than using a one-size-fits-all approach. This includes manual scraping, compressed-air roof cleaning, low-pressure washing and professional biocide treatments.

Question 37

Do you work carefully on older roofs?

Accepted Answer

Yes. Older and delicate roofs often require a more cautious approach. We assess every roof individually and may recommend waterless roof cleaning methods where appropriate.

Question 38

Why do customers mention your attention to detail?

Accepted Answer

We believe the finishing touches matter. This includes clearing gutters, checking downpipes, cleaning affected areas and carrying out a thorough site tidy-up.

Question 39

Can roof cleaning improve the appearance of my property?

Accepted Answer

Many customers tell us their roof looks dramatically improved after cleaning. Removing moss, algae and staining can significantly improve the overall appearance of a property.

Question 40

Are your staff friendly and professional?

Accepted Answer

Yes. One of the most common themes throughout our reviews is that customers find our team friendly, polite, helpful and professional.

Question 41

Will you explain the cleaning process before starting work?

Accepted Answer

Absolutely. We believe customers should understand exactly what work is being carried out, why a particular method has been recommended and what results they can expect.

Question 42

Do you offer honest advice even if it means recommending a different approach?

Accepted Answer

Yes. We assess every property individually and recommend the method we believe is most suitable for the roof's condition, age and construction.

Question 43

Do customers use Skyhawk Exterior Cleaning again?

Accepted Answer

Yes. Many customers return for additional services such as gutter cleaning, patio cleaning, exterior cleaning and ongoing maintenance after their initial roof cleaning project.

Question 44

Do you provide before and after results?

Accepted Answer

Where possible, we provide before and after photographs to demonstrate the transformation achieved and help customers see the difference.

Question 45

Why do customers say the service is good value?

Accepted Answer

Customers frequently mention that our pricing is fair for the level of service, communication, workmanship and results delivered.

Question 46

How important is site cleanliness during the work?

Accepted Answer

Very important. Reviews regularly mention that we take care to protect the property and leave the site clean and tidy once work has been completed.

Question 47

Can you clean roofs with heavy moss growth?

Accepted Answer

Yes. We regularly clean roofs with significant moss build-up. The most suitable cleaning method will depend on the roof type, condition and access requirements.

Question 48

Why do customers mention trust and confidence?

Accepted Answer

Customers often tell us they felt confident after we explained the process, discussed the options available and answered their questions honestly.

Question 49

Do you offer both residential and commercial exterior cleaning?

Accepted Answer

Yes. We work with homeowners, landlords, property managers, schools, commercial premises and other organisations across Sussex and Surrey.

Question 50

What do customers say about your roof cleaning results?

Accepted Answer

Common phrases used in reviews include: 'Roof looks like new', 'Amazing transformation', 'Exceeded expectations', 'Very professional', 'Great communication', 'Attention to detail', 'Friendly team', 'Highly recommend', and 'Clean and tidy throughout'.

Question 51

What is roof cleaning?

Accepted Answer

Roof cleaning is the professional removal of moss, algae, lichen, and dirt from your roof tiles. Across Sussex and Surrey, we use safe, low-pressure or dry scraping methods followed by a biocide treatment to restore your roof's appearance and protect its structural integrity.

Question 52

How much does roof cleaning cost?

Accepted Answer

Roof cleaning prices in Sussex and Surrey typically start from around £999 inc VAT. The final cost depends on the property size, roof pitch, moss severity, and access requirements. We provide an interactive estimator for transparent guide pricing.

Question 53

How long does roof cleaning last?

Accepted Answer

When completed professionally with our biocide treatment, a roof clean can last 3 to 5 years before significant moss returns. The biocide continues to work over time, keeping your roof cleaner for longer.

Question 54

Will roof cleaning damage tiles?

Accepted Answer

No. We never use aggressive high-pressure jet washing on roofs. We utilise manual scraping, compressed air, or low-pressure washing, ensuring your tiles are safely cleaned without risking damage or forcing water into your loft.

Question 55

Can moss damage a roof?

Accepted Answer

Yes. Moss acts like a sponge, holding moisture against your roof tiles. Over time, this can cause surface erosion, crack tiles during freezing weather, and block your gutters, leading to damp issues inside your property.

Question 56

What causes roof moss?

Accepted Answer

Roof moss thrives in damp, shaded environments. In areas like Crawley, Horsham, and Haywards Heath, nearby trees and the UK's wet climate create the perfect conditions for moss and algae spores to settle and multiply on roof tiles.

Question 57

What is manual roof scraping?

Accepted Answer

Manual roof scraping is a safe, dry cleaning method where we use specialist tools profiled to match your exact tile shape. This allows us to gently remove heavy moss without using water or pressure, ideal for older or delicate roofs. Learn more about our waterless method.

Question 58

What is compressed air roof cleaning?

Accepted Answer

Compressed air roof cleaning uses high-powered air to blow moss and debris off the roof. It is a highly effective, completely dry method that is exceptionally safe for heritage properties and roofs with no felt membrane.

Question 59

Do you apply biocide after roof cleaning?

Accepted Answer

Yes, every professional roof clean includes a biocide soft wash treatment. This specialist chemical (such as BAC50) kills remaining microscopic algae and lichen spores, preventing rapid regrowth and cleaning the roof further over time.

Question 60

Will roof cleaning remove lichen?

Accepted Answer

Yes. While lichen (the white or black crusty spots) is notoriously stubborn, our biocide treatment effectively breaks it down. Over the months following the treatment, the dead lichen will weather away naturally.

Question 61

How often should roofs be cleaned?

Accepted Answer

For most properties in Sussex and Surrey, a professional roof clean and biocide treatment should be carried out every 5 to 7 years. Regular maintenance treatments can extend this period significantly.

Question 62

Do you clean old roofs?

Accepted Answer

Absolutely. We specialise in cleaning older, delicate, and heritage roofs. We assess each property individually and often recommend waterless roof cleaning or dry scraping to ensure maximum safety for ageing tiles.

Question 63

What areas do you cover for roof cleaning?

Accepted Answer

We provide professional roof cleaning across Sussex and Surrey, including Crawley, Horsham, Haywards Heath, Brighton, Reigate, Redhill, and East Grinstead.

Question 64

What happens to the moss removed from the roof?

Accepted Answer

We manage all waste on-site. Roof moss is organic and is normally bagged and left in an agreed area, placed in your garden waste bins, or composted. Gutters, fascias, and surrounding areas are fully cleaned down afterwards.

Frequently Asked Questions

Why Choose Skyhawk?

Roof Cleaning Methods

Roof Condition & Damage

Results & Appearance

Biocide Treatment

Guarantees & Maintenance

Gutters & Clean-Up

Homeowner Concerns

Customer Reviews & Experiences

Roof Cleaning & Moss Removal

Gutter Cleaning & Clearing

Pressure Washing & Patio Cleaning

Render, Brick & Exterior Cleaning

Commercial Exterior Cleaning

General Company & Safety

Trusted Answers & Transparent Pricing

Request a Free Quote

Send a Message

Frequently Asked Questions

Why Choose Skyhawk?

Why choose Skyhawk Exterior Cleaning instead of the cheapest quote?

Roof Cleaning Methods

What's the difference between roof scraping and roof washing?

Which roof cleaning method is best for my roof?

Is roof washing safe?

Will pressure washing damage my roof?

Do you clean roofs without using water?

Why do some roofs need scraping instead of washing?

Roof Condition & Damage

Will roof cleaning cause leaks?

What if my roof already has damaged tiles?

Can roof cleaning damage roof tiles?

My roof is over 50 years old. Can it still be cleaned?

Results & Appearance

Will my roof look like new afterwards?

Why do some roofs become lighter after cleaning?

Will roof cleaning remove lichen?

How much moss will be removed?

Biocide Treatment

Why is biocide applied after roof cleaning?

How long does biocide take to work?

Is BAC50 biocide safe?

Do I need a biocide treatment if the roof has been scraped?

Guarantees & Maintenance

Do you offer a guarantee?

What happens if moss comes back?

How often should a roof be treated after cleaning?

Will I ever need another full roof clean?

Gutters & Clean-Up

Do you clean the gutters after roof cleaning?

What happens to all the moss removed from the roof?

Will my neighbour's property be affected?

Should I tell my neighbours?

Homeowner Concerns

I have solar panels. Should the roof be cleaned first?

Can you clean around bird spikes and pigeon deterrents?

Can you clean wall-hung tiles?

What if I have a conservatory?

Customer Reviews & Experiences

Why do customers say their roof looks like new after cleaning?

Why do customers recommend Skyhawk Exterior Cleaning?

Do you clean up after roof cleaning?

Will I receive clear communication throughout the project?

What makes Skyhawk different from other roof cleaning companies?

Do you work carefully on older roofs?

Why do customers mention your attention to detail?

Can roof cleaning improve the appearance of my property?

Are your staff friendly and professional?

Will you explain the cleaning process before starting work?

Do you offer honest advice even if it means recommending a different approach?

Do customers use Skyhawk Exterior Cleaning again?

Do you provide before and after results?

Why do customers say the service is good value?

How important is site cleanliness during the work?

Can you clean roofs with heavy moss growth?

Why do customers mention trust and confidence?

Do you offer both residential and commercial exterior cleaning?

What do customers say about your roof cleaning results?

Roof Cleaning & Moss Removal

What is roof cleaning?

How much does roof cleaning cost?

How long does roof cleaning last?

Will roof cleaning damage tiles?

Can moss damage a roof?

What causes roof moss?

What is manual roof scraping?

What is compressed air roof cleaning?

Do you apply biocide after roof cleaning?

Will roof cleaning remove lichen?

How often should roofs be cleaned?

Do you clean old roofs?

What areas do you cover for roof cleaning?

What happens to the moss removed from the roof?

Gutter Cleaning & Clearing

How often should gutters be cleaned?

Can blocked gutters cause leaks?

How much does gutter cleaning cost?

Do you use ladders?