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Being able to tell what is growing on a covering makes it much easier to judge whether roof cleaning is needed and what it should involve, and the three main organisms are distinguishable from the ground with a little care. Algae appears as flat discolouration rather than anything with substance. It shows as dark grey, green or black films, and characteristically as vertical streaking running down the slope in the direction water travels. It is most obvious on the elevation receiving least sun, and because it has no bulk it does not change the outline of the tiles at all. Moss is unmistakable once it develops, but the early stage is easy to miss. It begins as a fine green fringe along the lower lip of each course, visible from the ground only if you look at the tile edges rather than the tile faces. Left alone it thickens into cushions that break the clean line of each course and eventually fill the laps entirely. Lichen looks like neither. It forms flat, hard crusts, usually circular, in grey, white, yellow or orange, bonded tightly to the surface. It is most common on slate, clay and stone, and it appears on exposed elevations as readily as shaded ones. The distinction matters because the three need different handling. Algae responds to treatment alone. Moss must be physically removed first. Lichen cannot be scraped without damaging the surface and has to be dealt with chemically over a period of weeks. Householders in Isleham who can identify which they have will find quotations considerably easier to interpret.
Identifying growth correctly is the first thing a survey establishes, and Pro Clean Xtreme scopes the work from that rather than from a general impression. A covering carrying algal staining alone needs treatment; one with established moss needs full hand removal first; one with lichen on a mineral surface needs treatment and time, with no scraping at all. Getting that judgement right determines both what is quoted and what the customer should expect afterwards. A roof treated for lichen will keep changing for months and will look uneven partway through, which is entirely normal and worth knowing in advance. A roof cleared of moss changes immediately, with staining continuing to lighten over subsequent weeks. The survey records the growth type and distribution on every elevation alongside covering type, age and surface condition, the state of ridge, hip and verge lines, valley clearance, the condition of the eaves course, and any slipped, cracked or lifting units, with photographs provided at handover. The work follows a consistent method: protection of everything beneath the working elevations, access equipment chosen for the property, hand removal where it is needed using tools matched to the covering, valleys cleared along their full run, then full-coverage low-pressure biocide treatment across every elevation. No high-pressure equipment is used on residential coverings at any stage. Operatives are height trained and covered by full public liability and employers’ liability insurance, waste is bagged and removed, and hard surfaces are rinsed on completion. Customers in Isleham receive a fixed written quotation with the scope and guarantee period stated, no deposit requested and payment falling due on completion.
What is growing on a covering has a direct effect on roof cleaning cost, and understanding the distinction explains a good deal of the variation between quotations on apparently similar properties. Algal staining is the cheapest to deal with. There is nothing to remove physically, so the visit is short, the waste minimal, and the improvement comes progressively over the following weeks as the treatment breaks the growth down. On a covering carrying algae alone, a full hand-removal scope would be unnecessary work and should not be quoted. Moss is the expensive one, because it must be lifted by hand from every lap, valley, ridge and hip joint, and the deeper the beds the more hours involved and the greater the volume of waste to bag, carry down and take away. Lichen sits between the two in cost but demands the most patience. The manual element is minimal, since it cannot be scraped without damaging the surface, but proper treatment coverage across the whole roof is essential and the result appears slowly. The other variables apply as usual: true area with the pitch accounted for, covering material, access arrangements for each elevation, and the detail work at ridge, hip, valley, verge and eaves. Quotations are fixed and written, issued after a physical survey with the scope, roof areas and guarantee period stated. No deposit is requested, nothing is added while work is under way, and payment falls due on completion. Property owners in Isleham should expect a contractor to say which organisms are present and how each will be handled, since that determines whether the price is appropriate to the roof.
Remove years of dirt, grime, algae and staining for a cleaner, fresher finish.
Professional techniques designed to protect your surfaces while delivering outstanding results.
Keep your property looking its best with regular roof cleaning.
Commercial roof cleaning at boat builders, marine workshops and fabrication sheds involves large open-span buildings housing work that is highly sensitive to water, dust and anything falling from above. Hulls under construction, paint and gelcoat finishing, timber, resins and rigging are all vulnerable, and a leak or a drop of debris during a finishing stage can ruin days of work. Containment is therefore central. Areas beneath every working elevation are considered before anything begins, treatment is applied at low pressure directly to the covering rather than broadcast, and removed material is bagged as it comes off rather than allowed to fall. Where work is taking place beneath, attendance is timed to avoid finishing operations entirely, in agreement with the workshop manager. The buildings themselves are typically steel-framed with profiled sheeting at shallow pitch, tall enough to accommodate craneage and masts, with extensive rooflight runs and long gutter runs draining substantial spans. Growth in the laps and around upstands breaks free and silts the outlets, and coastal or waterside exposure usually means growth is well established. Work covers sheet surfaces, laps, upstands, ridge lines, gutter runs and outlets, with rooflights cleared to restore working light and treatment applied at low pressure in a specification matched to the coating. Site-specific risk assessments, method statements, insurance and competence records are supplied before mobilisation, with fall protection confirmed at survey and access equipment positioned clear of craneage and vessel movements. For yard managers in Isleham, timing the work around finishing schedules is what makes the difference between a straightforward maintenance visit and an expensive interruption.
Founded in 2016 by Karl Crofts, Pro Clean Xtreme has grown from a dedicated one-man operation into a trusted family-run team. Joined by his wife Lindsay and family members Callum and Rachel, we pride ourselves on delivering professional, safety-first cleaning. By combining honest communication with continuous investment in the industry’s best low-pressure steam equipment and safe access systems, we deliver exceptional results for every residential, commercial, and industrial client.
Founded by Karl Crofts, delivering reliable local service for over a decade.
Our own tracked cherry picker provides safe access without walking on tiles.
Safe low-pressure steam cleaning, softwashing, and specialist pre-solar preparation.
Ten years of trusted, family-run service delivering high-quality workmanship on every project.
As a family-run business established in 2016, we have built a strong reputation across Isleham for dependable, high-quality roof cleaning services. We take a personal and transparent approach to every project, while continually investing in professional low-pressure steam cleaning equipment and effective safety systems. From domestic properties to larger commercial roofs, our experienced team focuses on achieving thorough results while helping protect the condition of your roof. Fully insured and committed to reliable workmanship, we deliver a professional roof cleaning service from start to finish.
We take immense pride in the reputation we have built across Cambridgeshire and the surrounding areas since 2016. As a family-run business, delivering exceptional customer service, honest communication, and high-quality workmanship is at the heart of everything we do. Read through our latest Google reviews to see why residential homeowners, housing associations, and commercial contractors consistently trust Pro Clean Xtreme to safely protect and restore their properties.
Here are the answers to some of the most frequently asked questions about our roof cleaning services. If you have a question about your property, a specific cleaning requirement, or need further information about our services, please get in touch with our experienced team. We are always happy to provide advice and help you find the right solution.
The ideal frequency depends on the condition of your roof and how quickly moss, algae, dirt and other organic growth build up. Regular roof cleaning can help keep your roof looking well maintained and prevent heavy buildup.
Professional roof cleaning can help remove moss, algae, lichen, dirt, grime and other organic growth from your roof. The appropriate cleaning method will depend on the roofing material and its condition.
When carried out correctly, professional roof cleaning can be performed safely using suitable equipment and techniques. Care should be taken to use an appropriate method for the specific roof material.
Yes, roof cleaning can effectively remove moss and other organic growth from roofing surfaces. The treatment used will depend on the amount of moss present and the type of roof.
The time required depends on the size and condition of the roof, the amount of moss and dirt present, and the cleaning method required. A professional assessment can provide a better idea of the expected timeframe.
Yes. Removing moss, algae, dirt and weather-related staining can significantly improve the appearance of a tired or heavily weathered roof, helping the property look cleaner and better maintained.
Getting an initial estimate for your property is completely effortless. Simply fill out the form below with your full property address, and our family-run team will utilise Google Earth before providing a quotation. Whether you are a homeowner, a housing association, or an installation company preparing a site, let us know your specific requirements and we will get back to you promptly with an initial assessment.