AUTUMN OFFER

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15% OFF ROOF CLEANING

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BOOK A FREE QUOTE NOW

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AUTUMN OFFER 〰️ 15% OFF ROOF CLEANING 〰️ BOOK A FREE QUOTE NOW 〰️

Roof Cleaning

Protect your roof, enhance kerb appeal, and extend the life of your tiles with expert roof cleaning from Bristol Exterior Cleaning.

We provide professional, non-damaging roof cleaning across Bristol and the surrounding areas. Whether your roof is suffering from moss, lichen, or years of built-up grime, our team can safely restore its condition and appearance - helping you avoid costly repairs later on.

A large house with a white exterior is being worked on using a green boom lift. The driveway is paved with bricks, and construction tools and equipment are visible near a parked van with its door open. There are trees and a cloudy sky in the background.

Why Clean Your Roof?

Prevent Damage from Moss, Algae & Lichen

Moss and lichen thrive in damp UK climates. Left untreated, they can:

  • Lift or displace tiles, particularly concrete or clay ones

  • Trap moisture, leading to erosion or cracks (especially during winter)

  • Cause unsightly stains, especially on terracotta and concrete tiles

Reduce Wear & Tear

Over time, dirt and pollution wear down your tiles' protective coating. Regular cleaning helps preserve this layer, keeping tiles resilient to UV, moisture, and wind exposure.

Prevent Water Penetration

Organic build-up can cause small gaps or cracks that let water in. When that water freezes, it expands — potentially cracking tiles. Removing moss and debris stops this damage before it starts.

Protect What’s Underneath

Water-trapping growths can damage the underlayment or wooden battens under your tiles. A clean surface protects not just the roof tiles, but the structure beneath.

Spot Issues Early

Cleaning your roof reveals hidden problems, such as:

  • Cracked or slipping tiles

  • Early signs of decay or leaks

  • Pest activity or structural damage
    Catching these early is far cheaper than full replacements.

A house under maintenance with a worker on a lift in the attic space, a crane on a truck parked on the driveway, and a van from Bristol roofing company nearby. The yard is landscaped with a paved pathway and green bushes.
A roof covered in moss and debris with a damaged gutter and an aluminum foil-covered patch.

Our Roof Cleaning Process

Every roof is assessed before work begins so we can choose a cleaning method appropriate for the property and condition of the tiles. Our approach is designed to remove moss and organic build-up effectively without relying on unnecessarily aggressive cleaning methods.

1. Manual Moss Removal

We begin by carefully removing the bulk of the moss by hand. This allows us to work methodically across the roof while minimising unnecessary stress on the tiles.

2. Controlled Low-Pressure Cleaning

Once the heavier moss has been removed, the roof is cleaned using controlled low-pressure equipment to remove remaining dirt, staining and organic matter.

Unlike aggressive high-pressure washing, our approach is designed to achieve a thorough clean while protecting the integrity of the roof surface.

3. Biocide Treatment

r cleaning, we apply a professional biocide treatment across the roof.

This targets remaining spores and organic growth that may not be visible after cleaning, helping to slow the return of moss, algae and lichen and keep the roof cleaner for longer.

4. Gutters, Fascias & Soffits

A roof clean involves more than the tiles themselves.

Internal gutter clearance is included as standard, removing moss and debris generated during the cleaning process. We also clean the exterior of the gutters, fascias and soffits, leaving the whole roofline looking clean and tidy.

5. Final Check & Clean-Up

Once the work is complete, we carry out a final check of the cleaned areas and clear away debris created during the process.

The result is a professionally cleaned roof and roofline, with the property left tidy when we finish.

Is Roof Cleaning Suitable for My Property?

Roof type, age, condition and access can all affect the most appropriate cleaning method. That's why we assess each property individually rather than taking a one-size-fits-all approach.

If you're unsure whether your roof needs cleaning, send us some photographs or request a free quote and our team can advise on the most suitable approach.

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