Benefits of Soft Washing

The modern, technologically advanced, process of soft washing reduces, and even eliminates, the need for jet – or pressure/power – washing in most situations.

Soft washing is the process of using eco-friendly chemicals and low-pressure water to clean the surfaces of buildings and driveways.

Soft washing will not damage your property. It's effectiveness depends upon the cleaning contractor having the skilled knowledge of how to use the correct cleaning product at the correct concentration ratio, using the correct equipment. 

Soft washing provides long-term exterior cleaning by using low pressure and specialized chemicals (like sodium hypochlorite) to kill mold, algae, and moss, preventing regrowth for years (often 3-5) and keeping surfaces cleaner longer than pressure washing. It's a safer, deeper clean for delicate surfaces (roofs, render, wood) because the biocides sanitize, sanitizing the source of the organic growth and offering a residual effect against future build-up. Annual or biannual treatments maintain results effectively and cost-effectively. 

Softwash Long Term Protection for 3-5 Years

Soft washing with biocides provide long-term protection by

killing organic organisms—such as algae, moss, fungi, and lichen—at their root and leaving a residual film that prevents regrowth. 

How Biocide Protection Works

• Residual Action: Unlike bleach (sodium hypochlorite), which provides an instant clean but no lasting protection, biocides like DDAC (Didecyldimethylammonium chloride)penetrate porous surfaces. They continue to kill spores that land on the surface for months or even years after application.
• Self-Cleansing Process: Many professional biocides are "spray and leave" products. They work with natural weathering (rain and wind) to break down and wash away dead organic matter over several weeks or months.
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Is Soft washing with biocide 

the best method for cleaning render?

Yes, bleach can damage render if used incorrectly, primarily through discolouration and surface degradation. While sodium hypochlorite (the active ingredient in bleach) is a standard professional tool for "soft washing,"  bleach is often too strong or if used at improper dilutions for delicate surfaces like Krend and Monocouche renders. 

How Bleach Can Damage Render

• Permanent Discolouration: Using bleach straight from the bottle or in high concentrations can cause patchy, white, or streaked finishes due to a pH imbalance.
• Surface Etching: As a corrosive alkaline solution, concentrated bleach can break down the surface chemistry, stripping away the water-repellent silicone layer that protects modern renders.
• Salt Residue: If not thoroughly rinsed, bleach leaves behind salt deposits (efflorescence). These salts attract moisture, which can actually encourage faster regrowth of algae and moss.
• Warranties: Using unapproved chemicals or high concentrations can void manufacturer warranties for products like K Rend or Monocouche. 

Steam cleaning render

Steam cleaning ( Doff/Torc ) render is highly effective for removing heavy carbon staining or paint, but lacks the long term residual protection against algae that biocides provide.

soft washing with a biocide is widely considered the best and safest method for cleaning modern exterior renders like K-Rend and Monocouche. 

High pressure jet washing

• Is a way to get immediate results that look good – but only for a short time.
  
   
• Can be damaging to the protective surface layer of the material being cleaned, even concrete.
  
   
• Can be damaging to wall render, because render is a relatively soft material.
  
   
• Can be damaging to certain more delicate building materials often used for patios and paths, such as Indian Sandstone.

Soft washing

• Is the best solution for cleaning exterior wall render, natural and artificial slate roofs, concrete slate roofs, paths & patios, tarmac driveways, wood decking, sheds and fences, and children's wet-pour play areas.
  
   
• Is a cleaning method that produces fast, predictable results without harming your property. Results that can last for years.
  
   
• Is a cost-effective way to bring drives, paths and patios back to their former glory. Once clean, a light annual soft wash treatment will keep your drives and paths looking great all year round.

Soft washing has many other advantages over jet washing

• Longer lasting results
• Uses less water
• Is more cost-effective
• Is safe for all known building materials
• Does not damage the surface being cleaned or exaggerate the weathering affect
• Kills the spores left behind by jet washing

For long-term maintenance of the exterior surfaces of your property – ensuring it looks great all year round – annual or biannual treatment with a Mr Softwash product is by far the safest and most cost-effective option.