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A question that comes up regularly is whether a covering needs more than one treatment, and the answer depends on what is growing rather than on any general rule. For most roofs a single application at the correct rate is sufficient. Once the physical growth has been removed, biocide applied at low pressure across every elevation penetrates the surface, destroys the spores and root material remaining within it, and continues working for weeks afterwards as staining lightens and dead residue clears with the weather. There are situations where a second application is worth considering. Heavy lichen on slate or older clay releases slowly and unevenly over months, and where it is particularly established a follow-up treatment some months later can accelerate what remains. Coverings with a badly deteriorated surface — typically ones cleaned aggressively in the past — hold growth deep within the porous material and sometimes benefit from a second pass. What a second treatment does not do is compensate for a first application that was too weak, applied to only part of the covering, or washed off by rain before it could act. Those are execution failures rather than reasons for repetition, and the honest response is to put the original application right. It is also worth being sceptical of any proposal involving multiple scheduled applications as standard. On most coverings that is selling product rather than responding to a roof. Owners in Over are told at survey whether their covering is likely to want anything further, and if it is not, that is what the report says. A single properly specified application deals with the great majority of coverings entirely.
Getting the first application right removes most of the need for a second, and Pro Clean Xtreme specifies it individually for every roof rather than mixing the same solution regardless. Concentration, dilution, coverage rate per square metre and expected dwell time are all set at survey according to the covering material, the type and density of growth and the conditions on the day. Application is made at low pressure through calibrated equipment so coverage is even across the whole roof rather than heavy where the growth was worst and light elsewhere, and every elevation is treated including those that already look clean, since an untreated slope re-seeds the rest. Timing is planned around a suitable weather window. Product applied shortly before heavy rain is washed away having achieved very little, and moving a date is better than pretending otherwise. Where a covering genuinely warrants a follow-up — heavy established lichen being the usual case — that is explained at survey with a realistic timescale rather than proposed afterwards as an additional sale. Where it does not, nothing further is recommended. The physical stage precedes all of it: hand removal from ridge downward with tools matched to the covering, jointed lines cleared carefully, valleys emptied along their full run, waste bagged and taken from site. Operatives are height trained and covered by full public liability and employers’ liability insurance, and each elevation is photographed before and after. Customers in Over receive a fixed written quotation with the scope and guarantee period stated, no deposit requested and payment falling due on completion.
Treatment is a genuine materials cost within any roof cleaning cost, and it is one of the easiest places for a contractor to save money invisibly. Biocide applied at the correct rate across an entire covering represents real expenditure. Diluting well beyond specification, or treating only the visibly affected slopes, reduces that expenditure and produces an identical result on the afternoon the work finishes — and a markedly different one two years later. That is why quotations should state that treatment covers every elevation rather than referring to it in general terms, and why a figure substantially below the rest of the market usually reflects a reduced application rather than greater efficiency. Where a genuine follow-up application is warranted, it should be identified at survey and priced separately so the customer can see what it is and decide. Multiple applications proposed as a standard package, without reference to the condition of the covering, are worth questioning. The core price follows measurable factors: true area with the pitch accounted for, growth depth and distribution across each elevation, the covering material and profile and how firmly it grips growth, the access arrangements each elevation requires, 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 Over should ask what product will be used and at what rate. It is a specific question, and the willingness to answer it says a good deal.
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 churches, chapels and ecclesiastical buildings requires an approach shaped by the fabric, the consents and the pattern of use, and all three are established before any work is proposed. The coverings are frequently the original ones: natural slate, stone slates, handmade clay tiles and substantial lead work on flat sections, valleys, parapets and around towers. Materials of this kind are difficult or impossible to match, so the method is deliberately conservative. Loose growth and debris are lifted by hand, lichen bonded into a mineral surface is left to release gradually under treatment rather than scraped, and lead is never worked with abrasive tools. Access is planned around structures that were built without any thought for maintenance, using towers, roof ladders and powered access as the building requires, with load spread wherever a covering must be reached and fragile areas identified and protected. Where a building is listed or subject to faculty jurisdiction, the necessary consents and any restrictions on materials or methods are established with those responsible for the fabric before work is quoted. Parapet gutters and lead valleys are usually the practical priority, since they drain large roof areas through concealed outlets and discharge internally when capacity is exceeded. Attendance is arranged around services, weddings, funerals and community use of the building, with equipment positioned clear of approaches and everything left tidy. Site-specific risk assessments, method statements, insurance and competence records are supplied before mobilisation. For churchwardens and fabric officers in Over, protecting a covering that has lasted centuries is the entire objective, and a method chosen for speed has no place on a building of that age.
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 Over 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.