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Effective roof cleaning starts with correctly identifying what is growing, because the three main organisms found on British roofs are not interchangeable and do not respond to the same handling. Algae is the simplest. It forms thin dark films and the vertical streaking that follows water run-off, particularly on north-facing slopes, and it is essentially a surface organism that treatment alone will deal with. Moss is structural. It builds in cushions along tile edges, in laps and around bedding, anchoring itself with fine rhizoids that grip the surface texture. Because it holds substantial volumes of water, it is responsible for most of the physical damage attributed to biological growth, and it must be physically removed. No treatment dissolves an established moss bed; treatment stops it coming back once it has been taken off. Lichen is the difficult one. A symbiotic partnership of fungus and alga, it forms flat crusts in grey, white, yellow or orange bonded directly into the mineral surface of slate and clay. Attempting to scrape lichen away removes surface material with it, which is why the correct approach is chemical rather than mechanical, followed by patience while rain and weathering carry the dead growth off over subsequent weeks. A single roof commonly carries all three, distributed according to aspect, shading and how much moisture each elevation retains. That is why treatment is applied across the entire covering rather than only where growth is obvious, and why the results appear at different rates in different places. Roofs in Stilton show the same pattern as anywhere with mixed housing stock and mature planting, and reading that pattern accurately is what determines whether a clean lasts years or months.
Product knowledge is the quiet difference between roof cleaning that holds and roof cleaning that does not. Biocide is not a single substance applied at a single strength. Concentration, dilution rate, coverage per square metre, dwell time and the weather window all vary according to the covering material, the type and density of growth, and the temperature on the day. Get any of those wrong and the visible result on the afternoon looks identical while the outcome twelve months later does not. Pro Clean Xtreme specifies the treatment for each roof individually at survey and applies it at low pressure across the whole covering, including elevations that already appear clean, so nothing is left to re-seed what has just been cleared. Application is scheduled around rainfall, because product washed off before it has acted is money spent for nothing, and we would rather move a booking than pretend otherwise. The mechanical side is equally deliberate. Growth is removed by hand, using tools matched to the tile profile, working from ridge downward. No high-pressure equipment is used on residential coverings at any point, for reasons that come down to protecting the surface finish and keeping water out of the roof void. Operatives are height trained and fully insured, access equipment is selected for the individual property, waste is bagged and removed, and each elevation is photographed before and after. Customers in Stilton are told at handover what will happen over the following weeks — that stained areas keep lightening, that lichen releases gradually, and that dead residue clears with rainfall — so the process is understood rather than guessed at.
Roof cleaning cost varies for reasons that become obvious once a roof has been looked at properly, which is why every quotation follows a survey rather than a phone call. Area comes first, and it must be calculated with the pitch included, since a steep roof holds considerably more surface than its ground plan implies. Growth density comes second, because manual removal is the largest labour element and deep moss takes many times longer to clear than light algae. Material matters. Porous concrete tiles retain growth stubbornly and demand more effort per square metre than dense clay or natural slate, while fragile or aged coverings must be worked slowly to avoid breakages. Access is the fourth factor and often the most influential, covering how many separate set-ups are required, whether anything sits beneath the working elevations, and how firm and level the ground is. Finally, complexity. Dormers, valleys, hips, catslides and differing roof heights all interrupt the work and multiply the amount of edge detail requiring attention. All of that is assessed on site and converted into a single fixed written price with the scope, elevations and guarantee period stated. No deposit is taken, nothing is added midway, and payment is due on completion. Homeowners in Stilton should also factor in timing. The cost of cleaning is closely tied to how long the growth has been left, so a covering attended to every few years is consistently inexpensive to maintain, whereas one ignored for two decades becomes a substantial one-off project. Neither situation is unusual, but only one of them is avoidable, and the difference over the life of a roof is considerable.
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 on occupied buildings such as schools, colleges, nurseries, care homes, surgeries and residential blocks brings considerations that industrial sites do not. People are present throughout, many of them vulnerable, and the work has to be organised so that it is barely noticed from inside. That starts with exclusion zones and pedestrian management. Working areas are barriered and signed, routes are diverted in agreement with the site manager, and drop zones are established well away from entrances and play or garden areas. Attendance is timed to suit the building’s rhythm — half-term and holiday periods for education sites, quieter parts of the day for care settings, and weekends where a residential block has restricted parking during the week. The roofs themselves are often extensive and varied, mixing pitched tiled sections with flat or shallow areas and long runs of valley gutter. Growth on those shallow sections is persistent because water lingers, and displaced material blocks outlets quickly. Rooflights and dormers add detail work. Treatment is specified for the substrate and applied at low pressure, and all waste is contained and removed rather than allowed into surface drainage. Documentation is provided in advance: site-specific risk assessment, method statement, insurance certification, operative competence records and, where required, safeguarding-compliant arrangements for staff attending premises where children or vulnerable adults are present. Organisations in Stilton managing this type of building generally move to a planned cycle after the first visit. Predictable scheduling suits their governance requirements, keeps the drainage functioning through the winter months, and avoids the disruption that comes with reacting to a leak in an occupied building during term or during the night.
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 Stilton 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.