There is no secret product in this trade, and anybody suggesting otherwise is selling something. The chemistry used on rendered walls is well established, widely available and much the same from one competent contractor to the next: a hypochlorite-based biocide, diluted heavily, with a surfactant to slow run-off and hold it against the surface. What varies is not the bottle. It is the dilution chosen for a particular render, the volume applied, the contact time allowed, the evenness of the coverage and the judgement about when not to treat at all. That is worth knowing because it removes a whole category of marketing. A quotation resting on a proprietary formula, a unique solution or a specially developed product is resting on something that does not really exist, and the questions worth asking are about method instead. The method itself is simple to describe. Algae, lichen, moss and mould colonise the porous, textured face of render and hold moisture in it, so professional render cleaning applies the solution at low pressure and kills the colony at root rather than removing the visible layer. Our render cleaning services identify the render, survey the elevations and protect glazing, seals, frames, planting and hard surfaces before anything is applied. Render algae removal is quickest, render moss removal takes the most product, render mould removal is slowest, and render stain removal is handled separately afterwards. Our render cleaning services identify the render, survey the elevations and protect glazing, seals, frames, planting and hard surfaces before anything is applied. Our render cleaning services set dilution and contact time for the surface in front of us rather than to a standard recipe, which is where the judgement actually lies.
On thin-coat silicone the dilution matters more than the choice of product. These systems need enough concentration to kill an established colony and no more, since the excess simply runs off, and the balance is set by the level of growth rather than by anything on a label. K Rend cleaning uses a soft wash render cleaning solution applied at low pressure from the top of the elevation down, wet-on-wet so contact time stays even, with additional passes where colonisation is heaviest rather than a stronger mix. That last point is where inexperience shows. Somebody faced with stubborn growth reaches either for pressure or for a heavier concentration, and on a thin coat the first is destructive and the second achieves nothing the correct dilution would not have done with more patience. Render pressure washing remains the genuinely damaging option. The pigmented layer is only a few millimetres thick, the scoured patches are permanent, and debonded sections can be blown off entirely. Beads, joints, mastic and cracking are checked beforehand, since no product compensates for water getting behind a coating. Silicone render cleaning done chemically leaves the coat performing exactly as designed. Render soft washing kills at root and rain clears the dead layer across four to six weeks, whichever brand of biocide happens to be in the tank. Beads, joints, mastic and cracking are checked beforehand, since no product on the market compensates for a detail letting water behind a coating. Silicone render cleaning is the same operation in anybody’s hands; what differs is the judgement behind the dilution and the patience behind the dwell.
Monocouche is where volume matters more than anything in the tank. The scraped, open texture has to be saturated to its base, and a modest amount of a strong solution reaches the high points and stops, while a great deal of a correctly diluted one reaches the growth rooted several millimetres down. That is the entire technique on this render, and it is why the same product produces very different results in different hands. Monocouche render cleaning is chemical throughout. Product is applied heavily, reapplied where the open granular face absorbs it, and whole elevations kept wet with sections worked to a live edge, with nothing abrasive at any stage since colour runs through the full depth of the coat. Coloured render cleaning also means recognising lime bloom, the chalky white haze produced where moisture draws salts through the coat. It is mineral, needs a brief acidic treatment neutralised at once, and no biocide of any description will touch it. Render wall cleaning on a heavily colonised elevation may need two applications, which is more of the same solution rather than a different one. Render maintenance every three to five years keeps the volumes modest, since a wall caught early needs saturating once rather than repeatedly. Coloured render cleaning also means recognising lime bloom, which is mineral rather than organic and needs a brief acidic treatment neutralised at once rather than any biocide. Render maintenance every three to five years is worth more on this surface than any change of product would be. Coloured render cleaning on this surface is a question of volume and patience rather than of chemistry, and no product shortcuts either.
Commercial clients frequently ask for the product data, and it is supplied as a matter of course rather than on request. Safety data sheets, dilution rates, application volumes and the intended contact time all appear alongside the method statement. That transparency is straightforward when there is nothing proprietary involved. A specification can then name what is to be used and a client can check afterwards that it was. Commercial render cleaning is quoted from a survey covering render type, elevation areas, condition, contamination, drainage and access, with a written programme setting out sequence, hours, welfare, parking, exclusion zones and permits before a date is confirmed. Most render facade cleaning is completed from ground level with long-reach soft wash equipment, avoiding scaffold and keeping the working area small enough that a building trades normally. Premises range from offices and retail units to hotels, care homes, schools, workshops and light industrial buildings. Risk assessments, method statements, COSHH information and insurance certification are supplied before mobilisation. Where a specification names a product, we will work to it or say plainly why something equivalent would be preferable, rather than substituting quietly. Most render facade cleaning is completed from ground level with long-reach soft wash equipment, avoiding scaffold and keeping the working area small enough that a building trades normally. Where a client keeps a COSHH register, everything needed for it is provided in advance rather than after the work. Where a specification requires a named biocide, that is what is used and the invoice reflects it rather than a substitution nobody was told about.
Softwashing UK will name the product and state the dilution on request, and we would expect any competent contractor to do the same. There is nothing to protect and nothing that would be given away by answering. What takes time to learn is everything around it. Which render tolerates what concentration. How long to leave a solution in cold weather compared with mild. When a surface needs pre-wetting and when it does not. How to keep an edge live across a large elevation. When a wall should be left alone for another year. None of that is proprietary either, and all of it is the difference between a treatment that holds and one that does not. As render cleaning specialists working only on exterior coatings, the product is the cheapest part of any job. Access, preparation, time and judgement account for the rest. Full public liability cover is in place on every job, with method statements, risk assessments and product data available on request. Products are biodegradable and applied in measured volumes, so eco friendly render cleaning is the ordinary approach here. Anyone in Trewoon comparing render cleaning prices should ask what is being applied and at what strength. A treated wall holds four to five years, which makes thorough work the affordable render cleaning option and a straight answer about product the clearest sign of the best render cleaning service. Quotations are fixed, with elevations measured, condition and access assessed and the render cleaning cost written down alongside the scope and the product to be used. Where a customer wants to see the data sheet before booking, it is sent the same day and there is no charge or condition attached to it.
Trewoon is covered in full for every kind of render work, from a single elevation to a whole property. Small places are the easiest to arrange sensibly. Where two or three households book together, a single setup covers all of them and the cost for each falls noticeably, and it takes one call to organise rather than three separate visits. House render cleaning covers modern silicone-rendered homes through to older properties with painted or traditional coatings. Residential render cleaning is priced per property, since render type, contamination and access all change the amount of work involved. If one elevation is the problem, that is all we will quote for, and we will say honestly when a wall could reasonably wait another year. Asking when we are next expected nearby frequently produces a date within a fortnight, since a job added to an existing run costs less to make than a special visit would. Clear daylight images taken square on to each affected elevation, plus rough dimensions, are normally enough for a firm written quotation. Restricted access, three storeys or an uncertain render type will bring us out at no charge. Anyone searching render cleaning near me will find plenty of contractors and little explanation of method. As a local render cleaning company we would rather tell you what is in the tank than compete on a headline figure. Restricted access, three storeys or an uncertain render type will bring us out at no charge. Nobody needs to be present for the work itself, and the site is left as it was found. Restricted access, three storeys or an uncertain render type will bring us out at no charge.
Most properties in Trewoon benefit from professional render cleaning every 3 to 5 years, although this depends on the surrounding environment. Properties near trees, woodland, busy roads or coastal areas may require more frequent cleaning due to algae, mould and airborne contaminants. Our soft washing process removes existing growth and helps keep your render cleaner for longer.
Yes. Soft washing is specifically designed for delicate surfaces such as K-Rend, silicone render, monocouche render and painted render. Unlike high-pressure washing, it cleans at low pressure while treating biological growth at its source, reducing the risk of damage to the render finish.
We clean virtually all external render finishes, including K-Rend, Monocouche, Weber, Sto, silicone render, acrylic render, painted render, roughcast and pebble dash. Every cleaning method is tailored to the specific render type to achieve the best possible results.
Yes. Our specialist soft washing treatments are highly effective at removing green algae, red algae, black mould, mildew, lichen and other organic staining. We also apply professional biocide treatments to kill spores and slow down regrowth.
Because our process targets the biological growth rather than simply washing the surface, results typically last much longer than pressure washing alone. The exact lifespan depends on weather conditions, surrounding vegetation and the property’s location.
No. Our soft washing process is specifically designed to clean render safely. We use low-pressure application methods and specialist cleaning solutions that remove contamination without damaging the render surface when carried out by trained professionals.
The UK’s damp climate provides ideal conditions for algae, mould and other biological growth to develop on rendered surfaces. Areas with limited sunlight, nearby trees or persistent moisture are especially susceptible. Professional soft washing safely removes these contaminants and restores your property’s appearance.
