Roof Cleaning and Moss Removal in Sussex and Surrey

Moss, algae, lichen and dirt can build up on roof coverings over time, particularly on roofs exposed to damp, shaded or sheltered conditions.

A roof covered in moss can look untidy, but the condition of the roof itself is more important than simply making it look cleaner.

Find My Roofer provides roof cleaning and moss removal services across Sussex and Surrey, using an approach suited to the type and condition of the roof.

We don’t believe every roof should automatically be pressure washed. The correct cleaning method depends on the roof covering, its age, condition and the type of growth present.

CONTACT FIND MY ROOFER

Why Does Moss Grow on Roofs?

Moss and other organic growth can develop where roofs remain damp for extended periods.

Factors that can contribute include:

Shaded areas
Overhanging trees
Damp conditions
North-facing roof slopes
Debris collecting on the roof
Nearby vegetation
The age and condition of the roof covering

Moss can gradually spread across tiles and into areas around roof edges, valleys and gutters.

Is Moss on a Roof a Problem?

A small amount of moss does not necessarily mean that a roof is failing.

However, heavy growth can make it more difficult to see the condition of the underlying roof covering.

Moss can also retain moisture and may become particularly heavy when wet.

If a roof has substantial moss growth, it is sensible to assess the condition of the tiles, slates, ridges, verges, flashing and other roof components at the same time.

Roof cleaning should therefore be about more than simply removing what is visible.

Roof Moss Removal

The appropriate method for removing moss depends on the roof.

Some roofs may be suitable for careful manual or low-impact moss removal, while other roofing materials require a different approach.

Before cleaning, we consider:

The type of roof covering
The age of the roof
The condition of the tiles or slates
Existing damage
The amount of moss present
Access to the roof
Surrounding property and landscaping
Where removed moss and debris will go

The aim is to remove unwanted growth without causing unnecessary damage to the roof.

Should You Pressure Wash a Roof?

Not every roof should be pressure washed.

High-pressure cleaning can potentially damage or dislodge some roof coverings, particularly older or fragile materials.

For that reason, the cleaning method should be chosen according to the individual roof rather than simply using the highest pressure available.

If the roof covering is already damaged, loose or deteriorated, cleaning may not be appropriate until those problems have been assessed.

Moss, Lichen and Algae

Moss is not the only type of organic growth that can appear on a roof.

You may also see:

Lichen
Algae
Green staining
Dark organic deposits
General dirt and debris

Different types of growth can require different treatment and cleaning approaches.

A roof that appears black or green is not necessarily suffering from the same problem as a roof covered in thick moss.

Roof Cleaning and Roof Condition

Cleaning can also provide an opportunity to identify roofing problems that have been hidden by moss and debris.

During a roof assessment, we may look for:

Cracked tiles
Missing tiles
Slipped tiles
Damaged ridge tiles
Deteriorated pointing
Damaged flashing
Problems around chimneys
Blocked valleys
Debris around roof edges
Gutter blockages

If repairs are needed, these should be dealt with rather than simply cleaning over the problem.

For roofing repairs, see our Roof Repairs page.

Cleaning Roof Tiles

Roof tiles can become dirty and develop organic growth over time.

The appropriate cleaning method depends on the type of tile and its condition.

Older tiles may be more vulnerable to damage than newer materials, particularly if they have already become porous, cracked or weakened.

For this reason, we assess the roof before deciding how it should be cleaned.

Moss Removal Around Roof Edges and Gutters

Moss can collect around roof edges and eventually fall or wash into gutters.

Heavy amounts of moss and debris can contribute to blocked gutters and downpipes.

After moss removal, it is important to consider where the removed material has gone and whether the gutters and drainage system also need attention.

For guttering problems, see our Guttering page.

Roof Cleaning for Older Properties

Older properties can have roofing materials that require particular care.

Traditional tiles, slate and older roofing systems should not automatically be treated in the same way as a modern roof.

The condition of the material is also important.

If you have an older roof with heavy moss growth, we recommend assessing the roof before deciding on a cleaning method.

Sometimes the priority may be repairing or replacing damaged sections rather than carrying out extensive cleaning.

Will Roof Cleaning Stop Moss Coming Back?

Roof cleaning can remove existing moss and organic growth, but no cleaning method can guarantee that moss will never return.

Moss growth is influenced by environmental conditions such as moisture, shade, nearby trees and the orientation of the roof.

Regular inspection and maintenance can help identify problems early and prevent heavy build-up from being ignored for long periods.

Roof Cleaning Across Sussex and Surrey

Find My Roofer provides roof cleaning and moss removal across a wide area of Sussex and Surrey.

Areas we can cover include:

Crawley
East Grinstead
Horsham
Haywards Heath
Burgess Hill
Brighton and Hove
Worthing
Redhill
Reigate
Leatherhead
Guildford
And surrounding areas

If you’re unsure whether we cover your location, contact us with the property postcode and details of the roof.

Our Approach to Roof Cleaning

Our approach is simple:

ASSESS the roof.

IDENTIFY the type and condition of the covering.

UNDERSTAND what is causing the moss or organic growth.

CHOOSE a suitable cleaning method.

CHECK for underlying roofing problems.

CLEAN the roof carefully and appropriately.

We would rather recommend the correct method for the individual roof than use the same cleaning process on every property.

Roof Cleaning Projects

Our Roofing Projects and Case Studies section will include examples of real roofing work and, where available, roof cleaning and moss removal projects.

Project photographs can help show the condition of the roof before work and the result afterwards.

They also provide useful examples of the different types of roofing materials and conditions we encounter.

When Should You Have Your Roof Checked?

You may want to have your roof assessed if you notice:

Heavy moss growth
Loose or missing tiles
Water entering the property
Damp around the loft
Blocked gutters
Damaged ridge tiles
Deteriorated flashing
Excessive algae or lichen
Debris collecting on the roof

A roof inspection can establish whether the problem is mainly cosmetic or whether there are underlying roofing issues that need attention.

Frequently Asked Questions About Roof Cleaning and Moss Removal

1. CAN YOU REMOVE MOSS FROM A ROOF?

Yes. The appropriate moss removal method depends on the type and condition of the roof.

2. DO YOU PRESSURE WASH ROOFS?

Not automatically. Some roofs may be unsuitable for high-pressure cleaning. The cleaning method should be chosen according to the roofing material and its condition.

3. CAN MOSS DAMAGE ROOF TILES?

Heavy moss growth can retain moisture and may contribute to problems over time, but the presence of moss does not automatically mean that the roof is damaged.

4. SHOULD I CLEAN AN OLD ROOF?

An older roof should be assessed before cleaning. Older or deteriorated roofing materials may require a more careful approach.

5. WILL MOSS GROW BACK AFTER CLEANING?

It can. Environmental conditions such as shade, moisture and nearby vegetation can influence how quickly moss and other organic growth return.

6. CAN YOU CLEAN ROOF TILES?

Yes, subject to the type and condition of the tiles and the suitability of the roof for cleaning.

7. CAN ROOF CLEANING FIND OTHER ROOF PROBLEMS?

Yes. Removing moss and debris can make it easier to identify damaged tiles, flashing, ridges, valleys and other roofing problems.

8. DO YOU COVER ROOF CLEANING IN SUSSEX AND SURREY?

Yes. Find My Roofer covers a wide area across Sussex and Surrey, subject to the location and requirements of the project.

9. CAN YOU CHECK MY ROOF BEFORE CLEANING IT?

Yes. Assessing the condition of the roof first helps determine whether cleaning is appropriate and which method is most suitable.

Need Roof Cleaning or Moss Removal?

If your roof is covered in moss, algae, lichen or heavy dirt, don’t assume that simply pressure washing it is the answer.

The roof covering needs to be considered first.

Tell us where the property is located and what you have noticed, and we can discuss the most appropriate next step.