News
Black Staining on Render: Causes & Safe Cleaning
Why Black Staining Appears on Render Black staining on render usually appears because moisture, shade and airborne contamination allow biological growth to colonise the surface. On UK properties, the most common causes are algae, cyanobacteria, mould-like organic growth, carbon soiling from pollution, dirt held in porous render and water run-off...
Red Staining on Render: Causes and Safe Removal
What Causes Red Staining on Render? Red staining on render is usually caused by one of two things: organic growth, most commonly red or orange algae, or mineral staining from iron, rust or metal run-off. On UK properties, the most common cause is biological staining from airborne algae colonising damp,...
How to Clean Coloured Render Safely | SoftWash UK
The Safe Way to Clean Coloured Render Coloured render should be cleaned using a controlled low-pressure softwashing process, not aggressive pressure washing. The safest method is to survey the render first, identify the type of staining, carry out a test patch, apply the correct cleaning solution at a suitable strength,...
How Long Does Render Cleaning Last? UK Guide
How Long Does Render Cleaning Last? Professional render cleaning typically lasts between 1 and 5 years, depending on the type of render, the level of biological growth, the cleaning method used, the building’s environment and whether a suitable residual biocide treatment is applied. In many UK conditions, a correctly softwashed...
How Long Does Render Cleaning Last? UK Guide
How Long Does Render Cleaning Last? Render cleaning typically lasts between 12 months and 5 years, depending on the type of render, the cleaning method used, the level of biological growth, the building’s exposure, and whether a suitable biocidal treatment is applied after cleaning. In practical terms, a correctly softwashed...
Clean Coloured Render Safely: Softwashing Guide
The Safe Way to Clean Coloured Render The safe way to clean coloured render is to use a controlled softwashing process: inspect the render, identify the staining, test a small area, apply an appropriate cleaning solution at low pressure, allow correct dwell time, and rinse carefully without damaging the surface....
How to Clean Coloured Render Safely | SoftWash UK
The Safe Way to Clean Coloured Render The safest way to clean coloured render is to use a controlled softwashing process: inspect the render, identify the staining, carry out a small test patch, apply an appropriate cleaning solution at low pressure, allow safe dwell time, gently rinse where required, and...
Softwashing Render: Can It Damage Your Walls?
Can Softwashing Damage Render? Softwashing should not damage render when it is carried out correctly on a sound surface using the right chemical strength, suitable equipment, controlled dwell time and thorough rinsing. In fact, for many rendered buildings, softwashing is usually safer than aggressive pressure washing because it removes organic...
Red Staining on Render: Causes, Diagnosis & Cleaning
What Causes Red Staining on Render? Red staining on render is usually caused by one of two things: biological growth, commonly referred to as red algae, or mineral staining such as rust and iron oxide. On modern rendered buildings in the UK, the most common cause is a red, orange...
Render Cleaning Mistakes: Avoid Costly Damage
The Biggest Render Cleaning Mistakes The biggest render cleaning mistakes usually come from treating render like concrete, brick or paving. Render is a finished building surface, not a hard-wearing slab, and the wrong pressure, chemical strength, dwell time or rinse method can cause etching, streaking, patchy results, blown render, water...
How to Clean Coloured Render Safely
The Safe Way to Clean Coloured Render Coloured render should be cleaned using a controlled softwashing process, not aggressive pressure washing. The safest approach is to identify the type of staining, carry out a small test patch, apply an appropriate exterior cleaning solution at the correct strength, allow a controlled...
How to Clean Coloured Render Safely
The Safe Way to Clean Coloured Render Coloured render should be cleaned with a low-pressure, chemistry-led process that removes organic growth and soiling without damaging the surface, stripping pigment, driving water behind the render system or leaving patchy bright marks. In most cases, the safe method is to identify the...
