Your Trusted Roof Cleaning Experts in Knutsford

At External Cleaning Pros, we specialise in roof cleaning and roof moss removal in Knutsford. We ensure your roof remains free from damaging growths, unsightly stains, and premature deterioration. With over 15+ years of expertise, industrial-grade equipment, and a careful approach, we offer a service that restores your roof’s original beauty and extends its lifespan.

4.9 · 240+ Reviews

The Problem

Why Clean Your Roof?

Over time, the weather conditions we face in Knutsford i.e.—from sunny days to rainy spells—contribute to the accumulation of moss, algae, lichen, and other organic matter on your roof. These unwelcome guests can spoil your property’s appearance, and can lead to damage if left unchecked:

Moisture Retention: Organic growth traps moisture against your roof’s surface, potentially leading to rot and leaks.
Shingle Degradation: As moss and algae spread, they can lift and separate tiles, reducing your roof’s lifespan.
Structural Stress: The added weight of accumulated debris and growth can strain your roof’s structure over time.

Our Comprehensive Roof Cleaning Process

We employ a thorough, multi-step approach to ensure your roof looks clean and tidy and protected:

Before any cleaning begins, we conduct a detailed assessment of your roof’s condition. This helps us identify any problem areas and tailor our approach accordingly.

Using state-of-the-art equipment and eco-friendly cleaning solutions, we remove all traces of moss, algae, and debris without damaging your roof’s surface.

Your roof is left spotless, and all debris is removed from gutters, leaving your property in pristine condition.

Residential & Commercial Roof Cleaning in Knutsford

Roofs aren’t one-size-fits-all, and we get that. Age, material and how much grime has built up all affect which method will work best. We adapt our service to suit your roof’s exact needs:

Soft washing – We use a low‑pressure, detergent‑based spray that breaks down algae, moss and dirt without scratching tiles or shingles.
Manual moss removal – With specialist tools, we gently scrape away stubborn patches by hand, keeping fragile roofing intact.
Biocide application – A targeted biocide treatment helps prevent regrowth, so you won’t be back to square one in six months’ time.
Low-pressure steam cleaning – For extra‑tough marks, our low‑pressure steam eradicate dirt safely—no high‑pressure risks involved.

WHAT CUSTOMERS SAY

Loved by 240+ Homeowners Across South Knutsford

4.9

Based on 240+ Google reviews

      EXCELLENT  
   Based on 4 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   dstritch5656 
 
 
 
 Trustindex verifies that the original source of the review is Google. Exterior cleaning pros cleaned our render recently. They quoted a reasonable price and did exactly what they said they world. The job was excellent, they've made my render look just about new. No hesitation recommending them if your render needs attention.
  
 
      Posted on Google  
   
   Hannah Carroll 
 
 
 
 Trustindex verifies that the original source of the review is Google. Would highly recommend this company, they did an excellent job cleaning driveway and patio.
  
 
      Posted on Google  
   
   Steven Barnfield 
 
 
 
 Trustindex verifies that the original source of the review is Google. Recently had my driveway and patio cleaned, aswell as our render. The price was very reasonable and the quality of the work was second to none. 5 star service!
  
 
      Posted on Google  
   
   Simon Evans 
 
 
 
 Trustindex verifies that the original source of the review is Google. I'd like to thanks to David and his team for the job they have recently completed for us, David explained every step of the process for cleaning algae of our rendering and the products he was using he also explained the how he was going to bring our block paving and indian stone back to life, I will definitely be recommending them in the future thanks again
  
 
  
  
 
     Verified by Trustindex  Trustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more

Why Choose Our Knutsford Roof Cleaning Services?

Cutting-Edge Technology

Our investment in the latest cleaning equipment ensures efficient, thorough, and safe cleaning processes.

Customer-Centric Approach

Our clients are at the heart of everything we do. We prioritise clear communication, transparency, and exceptional customer service, ensuring your complete satisfaction.

Eco-Friendly Practices

We use biodegradable cleaning agents that are tough on grime but gentle on the environment and your landscaping.

Experienced Technicians

Our team of certified roof cleaners in Knutsford brings over 40+ years of cumulative experience and ongoing training to every job.

Flexible Scheduling

We work around your schedule, offering convenient appointment times that minimise disruption to your daily routine.

Long-Term Solutions

Our preventative treatments and maintenance plans help keep your roof cleaner for a long period, saving you from hassle and money in the long run.

What Makes Us Stand Out

From family homes and rental properties to local businesses

Exterior Cleaning Pros is the go‑to company for roof moss removal in Knutsford.

We’ve tackled every roof type – tiled, slate, metal, flat and shingle – so we know exactly which techniques and products work best.

Our operatives are fully insured, IPAF‑trained for work at height and carry all the right PPE.

If you need reliable roof moss removal in Knutsford, we have the expertise to restore and protect your roof efficiently.

Call David on 07421-223460 to get a free quote!

See The Difference A Professional Cleaning Can Make!

Before & After: Real Transformations In Knutsford

Our services

Every Roof Type Treated — the Right Way

Clay & Concrete Tiles

The most common roof type in Sale, Timperley, and Cheadle. A soft wash clean followed by a full biocide treatment. Moss lifts and washes away naturally over the following weeks — no scraping that damages the tile surface.

Natural Slate

Found on many Victorian and Edwardian properties in Didsbury, Chorlton, and Altrincham. Slate is delicate — the wrong pressure or the wrong chemical can cause irreversible surface damage. David uses an ultra-low pressure approach with a pH-neutral cleaning solution specifically suited to natural stone.

Concrete & Fibre Cement Tiles

Common on 1960s–1980s builds across Sale and Stockport. These tiles are porous and absorb algae deeply. David uses a dwell-time treatment — applied and left to work — rather than scrubbing that can erode the surface coating.

Flat Roofs (EPDM, Felt & GRP)

Garage roofs, extensions, and bay window roofs. Flat surfaces collect standing water and grow algae quickly. David cleans and treats flat roofs with a low-pressure wash and a biocide safe for rubber and felt membranes — without risking joints or seams.

Ridge & Mortar Repointing

While cleaning at roof height, David often spots loose or failed mortar around ridge tiles — a common cause of leaks in South Manchester’s wet winters. He can repoint ridge tiles on the same visit, securing them before they shift or fall.

Gutter Clearing & Fascia Wash

Every roof clean includes a full gutter clear. David also offers a fascia and soffit wash — removing the black streaking that builds up beneath gutters and makes an otherwise clean roof line look neglected.

My team and I work across these towns almost every week

Areas We Serve:

Altrincham
Hale
Hale Barns
Timperley
Sale
Stretford
Wilmslow
Stockport

Bowdon
Knutsford
Macclesfield
Alderley Edge
Chorlton
Cheadle
Didsbury
Cheadle hulme

About Us

How Much Does Roof Cleaning Cost?

Homeowners ask for a guide price, so here is a transparent range based on recent jobs.

A typical three-bedroom semi in Sale, Timperley or Cheadle with moderate moss usually starts from £475 to £650.
A larger detached property in Wilmslow, Hale or Alderley Edge with heavy moss and multiple elevations is typically £750 to £1,100.

The final price depends on size, roof pitch, access, and the amount of moss present. I can price accurately from photos or a short visit, and the price is fixed.

0 +

Roof cleaned

Since 2007

What do you get with me

What I will never do is dress this up as more than it is.

Roof moss removal is one of the smartest bits of maintenance a homeowner can do. Moss holds moisture, and moisture sitting against tiles and pointing long enough will cost you far more than a clean ever will.

My 5 member team and I have cleaned over 2,000 properties since 2007.

Roof moss removal is a core service from late summer through to spring.

I am City & Guilds Qualified. I hold PA1 and PA6 spraying certificates.

This means I am legally qualified to mix and apply the professional biocide that kills moss and lichen at the root. It is safe for pets and gardens when applied correctly.

I do not use high pressure on roof tiles, ever.

My scrape and biocide method removes what you see today and kills the spores you cannot see.

Get a Free Quote

In the North West climate, that keeps a roof clear for three to four years.

What Makes Us Stand Out

What is included in every fixed price?

Full roof survey
Hand removal of heavy moss
Full biocide treatment to all elevations
Complete gutter and downpipe clearance
Full site protection and rinse down
Before and after photos

I do not offer high pressure roof washing. I do not offer roof sealing or coating, as this can trap moisture in our climate and cause long term issues. I do not replace broken tiles, although I can recommend trusted local roofers in South Manchester if I find damage.

FAQ

Roof Cleaning FAQ's

Will your method damage my roof tiles?

No. Damage is caused by high pressure water. My method is recommended and approved by tile manufacturers. It uses hand tools and a low-pressure spray that is gentler than a rainstorm. If your roof is unsuitable, I will tell you at the survey stage.

Do you walk on the roof?

No, I do not walk on your roof. I work from a ground, mobile tower or MEWP.

How long the roof will stay clean?

After my treatment, most roofs in Cheshire and Manchester stay largely moss-free for three to four years. Heavily shaded or north-facing roofs under trees may need attention sooner. The biocide provides long-term protection, unlike a simple wash.

Do you make a mess of the garden?

No. This is a key part of the service. We sheet sensitive plants, collect the bulk of the moss, and thoroughly rinse all paths, patios and driveways before we leave.

Can you clean my roof in winter?

Yes. Autumn and winter are the best times for biocide application in the UK. The damp conditions help the treatment absorb. I work year-round, weather permitting, and never work in high wind or frost.

Why is your method better than a cheap pressure wash?

A pressure wash looks impressive for a few weeks because it leaves live spores behind. My biocide kills the growth at the root. Over four years, my method works out less expensive because you pay once, not annually.

My roof was cleaned a few years ago and the moss came back quickly. Why would this time be different?

In almost every case where moss returns quickly after a clean, the cause is the same — the previous company did not apply a biocide treatment. Removing visible moss without treating the underlying biological growth simply clears the surface temporarily. The root structures remain and regrowth is rapid. Our process treats the cause, not the symptom, which is why our results last considerably longer than a standard pressure wash.

Ready for an honest assessment?

Send me photos of your roof. I will identify your roof tile type and give you a fixed price the same day.

COMPANIES WE WORK WITH

Accredited, Insured & Industry-Approved

We hold current accreditations from recognised UK industry bodies and operate as an approved contractor.