Professional Render Cleaning in Suffolk

Your quotation confirms the walls, treatment and rinsing included. A typical service covers an initial assessment, protection of nearby areas, low-pressure application of the selected cleaning solution, controlled agitation or rinsing where appropriate, a final check and tidy-up. Repairs, repainting and specialist stain removal are separate unless specifically quoted.

We assess K Rend, monocouche, silicone, acrylic, painted and traditional rendered finishes individually. Suitability depends on age, condition, previous coatings, visible defects and the manufacturer’s guidance. A test area may be completed where appropriate.

Green and red staining is commonly associated with algae and other biological growth, while black marks may include mould, lichen, pollution or moisture-related soiling. Colour alone does not prove the cause, so we assess the wall before choosing treatment.

We do not routinely use aggressive pressure washing on render. High pressure can erode textured finishes, disturb coatings or drive water into defects. Our normal approach uses controlled low-pressure application, appropriate chemistry and gentle rinsing where required.

Softwashing uses low-pressure application of a cleaning solution chosen to treat organic growth and staining without relying on force. The product, strength, contact time, agitation and rinsing are adjusted for the surface and condition.

A controlled sodium hypochlorite, or SH, solution may be used where the render and organic staining are suitable. It is not automatically used on every wall. Concentration, contact time, protection and rinsing are determined by the assessment and product instructions.

A compatible surfactant helps a solution spread, wet and cling more evenly on a vertical wall. A scent masker may reduce the perceived chlorine odour during suitable SH work, but it does not neutralise the chemical or alter the required safety controls.

DDAC is didecyldimethylammonium chloride. BAC refers to benzalkonium chloride, which may be supplied as a 50% concentrate known as BAC50. These quaternary-ammonium biocides can provide a slower-acting treatment for suitable organic growth. We use professional products only where appropriate and according to their labels.

No. The treatment is selected for the render type, condition, staining and surroundings. Some jobs need an SH softwash, some suit a DDAC- or benzalkonium-chloride-based biocide, and others may need a different specialist approach or no chemical treatment at all.

Organic staining often improves substantially, but no responsible cleaner can promise that every mark will disappear. Rust, efflorescence, mineral deposits, oxidation, paint failure, shadowing and deeply embedded staining may remain or require separate specialist treatment.

We assess nearby plants, glazing, metals, paving and neighbouring property before work begins. Protection may include pre-wetting, covering or moving sensitive items, controlled application, managed runoff and thorough rinsing where the treatment requires it.

These are not the same as organic growth and may require a separate product, test area or specialist repair. We identify visible non-organic staining during the assessment and explain whether it is included, optional or outside our service.

We do not repair structural defects as part of standard render cleaning. Cracked, hollow, loose, blown or delaminating render may need repair before cleaning. We will explain visible concerns and may decline or limit treatment where proceeding could worsen damage.

Price depends on the wall area, render type, level and type of staining, access, protection requirements and treatment selected. Send your postcode and clear photographs for an initial assessment and a free, no-obligation quotation.

Timescale depends on the property and treatment. An SH softwash can give a prompt visual improvement, while some professional biocides work progressively after application. We explain the expected process and timescale before you book.

There is no fixed schedule. Aspect, shade, nearby trees, moisture, local environment, render texture and customer preference all affect regrowth. We recommend an appropriate maintenance interval after assessing the property rather than prescribing the same frequency for every wall.