Professional Roof Cleaning in South Wales
Moss, algae and lichen build-up doesn't just look bad — it shortens the life of your tiles. We safely remove biological growth and restore your roof's appearance using professional equipment.
Recent Roof Cleaning Work
Why Choose Our Roof Cleaning Service
- Safe, controlled removal of moss, algae and lichen
- Extends the lifespan of your roof tiles by years
- Improves kerb appeal and property value
- No damage to tiles — we never use excessive pressure on roofs
- Optional biocide treatment to slow regrowth
- Fully insured with public liability cover
- Before and after photos provided with every job
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Why Roof Cleaning Is Essential in South Wales
The South Wales climate is one of the wettest in the UK, creating ideal conditions for moss, algae and lichen to thrive on roof surfaces. What begins as a thin green film can quickly develop into thick moss growth that traps moisture against your tiles, works into gaps between them, and eventually causes cracking, lifting and water ingress. Left untreated, a moss-covered roof doesn't just look neglected — it becomes a structural liability that leads to expensive repairs.
Professional roof cleaning removes this growth safely, restores your roof's appearance and extends the life of your tiles by years. At PB Cleaning Solutions, we provide specialist roof cleaning across South Wales, from Newport and Cardiff to Cwmbran, Chepstow and Bristol.
How Moss Damages Your Roof
Moss is more than a cosmetic problem. As it grows, its root system penetrates the surface of your tiles, creating micro-fractures that allow water to seep in. In winter, trapped water freezes and expands, cracking tiles from the inside — a process called freeze-thaw damage. Thick moss also acts like a sponge, holding water on your roof long after rain has stopped, which accelerates tile degradation and can lead to damp in your loft space.
Moss growth also blocks the natural drainage channels between tiles, causing rainwater to back up under the tile overlap. This leads to water ingress, damp walls and — in severe cases — structural timber damage. Regular roof cleaning prevents all of these problems and is significantly cheaper than tile replacement or damp remediation.
Our Roof Cleaning Methods
Manual Moss Removal
For heavily moss-covered roofs, we begin with careful manual removal using specialist scrapers and brushes. This removes the bulk of the growth without putting excessive force on the tiles. We work from the ridge down, clearing debris as we go and ensuring gutters are protected from blockage.
Low-Pressure Washing
Unlike driveways and patios, roof tiles cannot withstand high-pressure washing. We use low-pressure techniques — typically under 100 bar — to rinse away remaining growth and dirt without damaging the tile surface, protective coatings or the underlying felt. This controlled approach is essential for preserving the integrity of your roof while achieving a thorough clean.
Biocide Treatment
After cleaning, we apply a professional-grade biocide treatment to the entire roof surface. This kills any remaining spores, lichen and microscopic growth that cleaning alone can miss, and creates a hostile environment that significantly delays regrowth. Most biocide treatments remain effective for 12–24 months, meaning your roof stays cleaner for much longer than with cleaning alone.
Roof Types We Clean
We clean all common roof types found across South Wales properties:
- Concrete tiles — the most common roof type and highly prone to moss growth
- Clay tiles — including Rosemary, plain and pantile varieties
- Natural slate — Welsh slate, Spanish slate and reconstituted slate
- Flat roofs — felt, rubber (EPDM) and fibreglass (GRP)
- Metal roofing — corrugated, standing seam and profiled sheets
Each material requires a different approach. We never use a one-size-fits-all method — every roof is assessed individually and treated with the technique best suited to its material and condition.
The Impact on Kerb Appeal and Property Value
A clean roof is one of the most impactful improvements you can make to your property's exterior. Estate agents consistently report that a visibly moss-covered roof puts buyers off, as it suggests potential maintenance issues and hidden costs. A professional roof clean — often combined with softwashing the render and cleaning the driveway — can transform the entire appearance of a property for a fraction of the cost of a repaint or re-roof.
Areas We Cover for Roof Cleaning
We provide professional roof cleaning throughout South Wales, including Newport, Cardiff, Cwmbran, Pontypool, Caerphilly, Chepstow, Caldicot, Magor, Abergavenny and Bristol. We're fully mobile and carry all equipment needed to complete every job — no access to your mains water or electricity is required.
Combine Roof Cleaning with Other Services
Many customers book roof cleaning alongside gutter cleaning — it makes sense to clear the gutters immediately after a roof clean to remove all the debris washed down during the process. We also offer softwashing for rendered walls and UPVC cleaning for fascias and soffits, giving your property a complete top-to-bottom exterior refresh.
How Much Does Roof Cleaning Cost in South Wales?
Roof cleaning costs depend on the size of your roof, the pitch (steepness), the level of moss growth and accessibility. A typical 3-bedroom semi-detached house in South Wales costs between £600 and £1,200 for a full roof clean with biocide treatment. We always provide a clear, fixed quote after inspection — request your free roof cleaning quote today or call 07449 493617.
Our Roof Cleaning Process
Survey
We assess your roof condition and provide a clear, fixed quote.
Preparation
Surrounding areas are protected. Gutters are cleared first.
Cleaning
Moss and growth are carefully removed using specialist tools.
Treatment
A biocide is applied to kill remaining spores and delay regrowth.
Roof Cleaning — Frequently Asked Questions
Will roof cleaning damage my tiles?
No. We use controlled methods appropriate to your tile type. We never use excessive pressure on roof surfaces.
How often should I have my roof cleaned?
Every 3–5 years is typical for most South Wales properties.
Do you clean all roof types?
Yes — concrete tiles, clay tiles, slate and flat roofs.
How long does a roof clean take?
Most domestic roofs take 1–2 days depending on size and growth.
Is roof cleaning worth the investment?
Absolutely. It extends tile lifespan, prevents water damage and dramatically improves kerb appeal — all for a fraction of the cost of re-roofing.
Do you provide before and after photos?
Yes — we photograph every job before and after so you can see the full transformation.
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