Services
Contact Us
The colour of a render affects how quickly a wall dries out, and that in turn affects how readily it colonises, which is a connection almost nobody makes. Dark surfaces absorb a good deal more solar energy than pale ones do. A dark grey or anthracite elevation in sunlight reaches a noticeably higher surface temperature than a white one beside it, and that heat drives moisture off faster after rain. On a sunlit wall, a darker finish therefore dries sooner and offers algae a noticeably shorter window in which to establish itself. The effect reverses entirely in shade. Without sun there is no thermal gain to exploit, so a dark north-facing elevation dries no faster than a pale one and colonises just as readily. Colour helps only where light actually reaches the wall. There is also a visibility factor working firmly the other way. Green algae on a white wall is obvious from the pavement within two or three years of appearing. The same growth on a dark grey finish reads as no more than a slight dulling and can go unnoticed for twice as long, which is precisely why dark walls are frequently more heavily colonised than they appear once a survey is finally arranged. Treatment itself is entirely unaffected by colour, though heavily pigmented finishes and anything through-coloured demand the usual caution about abrasion of the surface. Elevations at properties in Over are assessed on aspect, shelter and drying behaviour rather than on how bad they happen to look, since colour distorts that particular judgement in both directions.
Dwell time is the least visible part of a render clean and the part that decides whether it worked, so it is worth describing how it is actually judged rather than simply quoted as a number. There is no fixed period, and any contractor quoting one is guessing. The range is broadly ten minutes to an hour, and where a particular wall falls within that depends on several things assessed on the day. Surface temperature comes first. A warm elevation dries fast and the working window shortens, so passes are smaller and re-wetting is planned in. A cool shaded wall holds solution far longer and dwell can be extended without any effort. Porosity of the coating is second. Absorbent sand and cement drinks solution into the surface, which is helpful for reach and unhelpful for staying wet, so it is applied generously and topped up. Low-porosity thin coats hold solution on the face, where it works efficiently but will eventually run. The type of growth present is third. A green film responds quickly. Mature lichen needs the full period and sometimes more, because the chemistry has to travel into a structure rather than across a film. Weather is fourth, since rain arriving mid-dwell dilutes everything and the visit is better rescheduled. The operative judges all of that by watching the wall rather than a clock, which is why experience matters a great deal more than any published figure. Properties in Over are worked to whatever dwell the elevation needs on the day, and the fixed price covers however long that turns out to be.
Colour does not appear in any pricing calculation, and yet dark rendered properties do sometimes quote lower than pale ones of identical size. The reason is worth explaining. It comes down entirely to when people actually call. A white or cream elevation shows algae obviously within three or four years, so householders notice early and arrange treatment while the growth is still light. That is a comparatively cheap job: modest dilution, a single pass and no second application at all. A dark grey finish disguises exactly the same growth for a considerably longer period. Owners frequently call at six or seven years, by which time lichen has established and the treatment needed is a heavier one. That is not cheaper at all. Where a dark property is caught early, though, it frequently prices at the lower end of its band, because sunlit dark walls dry faster and genuinely carry less growth than a pale wall in exactly the same position would. So the honest advice for anyone with a dark render is to check the shaded elevations by hand rather than by eye alone, since what looks perfectly acceptable at twenty metres may well be a definite green film at arm’s length. Standard bands apply regardless of colour: £180 to £400 for single-storey buildings, £280 to £430 terraced, £400 to £620 semi-detached and £550 to £880 detached, at £4 to £8 per square metre of treated wall. Properties in Over are graded on what is actually on the wall rather than on how visible it happens to be.
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 render cleaning.
Keep your property looking clean, fresh and well maintained with professional render cleaning in Over. Over time, rendered walls can become affected by algae, moss, dirt, staining and other environmental contaminants, leaving the exterior looking tired and discoloured. Our professional render cleaning service is designed to safely restore the appearance of rendered surfaces without causing unnecessary damage.
Bus and coach depots present render cleaning around a fleet that leaves before dawn, returns late and occupies every square metre of yard in between. The buildings are varied: maintenance and inspection sheds, wash and fuelling facilities, parts and tyre stores, driver accommodation and messrooms, traffic offices and administration. Rendered elevations face yards where vehicles manoeuvre in tight formation throughout the day. The soiling on these buildings reflects all of that entirely. Exhaust deposits, brake and tyre dust, diesel misting and general road film bond into the render alongside ordinary algae and lichen, and elevations near wash bays carry heavier organic growth because they are permanently damp. Timing is dictated by the movements of the fleet. Mid-morning to mid-afternoon is when a depot is emptiest, with vehicles out on service, so that is the workable window on most sites. Where a depot runs continuously, elevations are phased around the parking layout and agreed with the traffic office. Exclusion zones, banksman cover and standing space are all agreed before mobilisation, since a yard laid out for coaches has very little spare room and vehicle movement takes absolute priority over everything else. Fuelling points, wash plant, electrical and charging installations and any pit or inspection area are identified and excluded from the working area. Pro Clean Xtreme issues documentation ahead of mobilisation: risk assessments, method statements, COSHH data sheets and public liability certification. Depot and engineering managers responsible for premises in Over can arrange a survey covering every rendered building, a written specification and a fixed price with a phased programme.
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.
Whether your render has developed green algae, dark staining or general weathering, professional cleaning can make a significant difference to the appearance of your property. We take care to assess the condition and type of render before cleaning, helping us select an appropriate approach for the surface. This allows us to achieve thorough results while minimising the risk of damage to delicate or textured finishes.
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.
There is no fixed schedule as it depends on the property’s location, exposure and surrounding environment. Render that is shaded or surrounded by trees may require cleaning more frequently.
Yes. Professional render cleaning can remove algae and other organic growth that has developed across the surface.
The correct cleaning method should be selected based on the type and condition of the render. We assess the surface before cleaning to help ensure an appropriate approach is used.
Professional cleaning can significantly improve render affected by dirt, algae, organic growth and black staining. The final result can depend on the severity and age of the staining.
Yes. Render cleaning can be carried out on many types of residential and commercial properties, helping maintain a clean and professional exterior.
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.