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How Long Does Roof Cleaning Last? UK Expert Guide

How Long Does Roof Cleaning Last? UK Expert Guide

By Mark Cave July 06, 2026 |

How Long Does Roof Cleaning Last? Roof cleaning typically lasts between 2 and 5 years in the UK, depending on the cleaning method, roof condition, tile type, surrounding trees, shade, drainage and whether a suitable biocidal treatment is applied after moss removal. A roof that is only scraped may start...

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Softwash Contractor Mistakes: 13 Ways to Avoid Them

Softwash Contractor Mistakes: 13 Ways to Avoid Them

By Mark Cave July 05, 2026 |

What New Softwash Contractors Often Get Wrong New softwash contractors usually get into trouble for one of three reasons: they underestimate the technical side of chemical cleaning, they price and sell the service like pressure washing, or they fail to build proper safety, insurance and compliance into the job from...

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Softwashing Mistakes New Contractors Must Avoid

Softwashing Mistakes New Contractors Must Avoid

By Mark Cave July 05, 2026 |

The Biggest Mistakes New Softwash Contractors Make The biggest mistakes new softwash contractors make are not usually caused by lack of effort. They are caused by underestimating the importance of chemistry, dilution, surface assessment, safety controls, customer communication and proper process. Softwashing is not simply “spray and walk away”. Done...

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How to Clean Coloured Render Safely | SoftWash UK

How to Clean Coloured Render Safely | SoftWash UK

By Mark Cave July 05, 2026 |

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...

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Why Roof Tiles Turn Green and How to Treat Them

Why Roof Tiles Turn Green and How to Treat Them

By Mark Cave July 04, 2026 |

Why Roof Tiles Turn Green Roof tiles turn green because moisture, shade and airborne biological spores create the right conditions for algae, moss, lichen and other organic growth to colonise the tile surface. In the UK, this is especially common on north-facing roof slopes, shaded properties, roofs under trees, and...

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How to Remove Black Spots from a Patio Safely

How to Remove Black Spots from a Patio Safely

By Mark Cave July 04, 2026 |

How to Remove Black Spots From a Patio Black spots on a patio are usually lichen colonies that have rooted into the surface of paving slabs, especially Indian sandstone, limestone, concrete flags, porcelain grout lines and older block paving. The most reliable way to remove them is to combine correct...

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Can You Pressure Wash Roof Tiles? Safer UK Methods

Can You Pressure Wash Roof Tiles? Safer UK Methods

By Mark Cave July 04, 2026 |

Can You Pressure Wash Roof Tiles? Yes, you can pressure wash some roof tiles, but in most UK roof cleaning situations it is not the safest or most sensible method. High-pressure washing can damage roof tiles, strip protective surface layers, force water beneath laps and flashings, disturb pointing, and increase...

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How Softwashing Works: The Science Explained

How Softwashing Works: The Science Explained

By Mark Cave July 04, 2026 |

The Science Behind Softwashing: How Low-Pressure Chemical Cleaning Really Works Softwashing is a low-pressure exterior cleaning method that uses controlled chemistry, dwell time and gentle rinsing to remove and control organic growth such as algae, lichen, moss, mould, mildew and biofilm. Unlike pressure washing, which relies mainly on mechanical force,...

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Moss Coming Back After Roof Cleaning? How to Stop It

Moss Coming Back After Roof Cleaning? How to Stop It

By Mark Cave July 04, 2026 |

Why Moss Keeps Coming Back After Roof Cleaning Moss keeps coming back after roof cleaning because the underlying causes have not been controlled. In most cases, a roof has been cleared of visible moss but not properly treated for moss spores, algae, lichen, retained moisture, shade, organic debris or porous...

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Softwashing Roof Tiles vs Pressure Washing: UK Guide

Softwashing Roof Tiles vs Pressure Washing: UK Guide

By Mark Cave July 03, 2026 |

Softwashing vs Pressure Washing Roof Tiles: Which Is Best for UK Roof Cleaning? For most UK roof tile cleaning projects, softwashing is the safer and more sustainable method than pressure washing. Softwashing uses controlled low-pressure application of professional cleaning solutions to treat moss, algae, lichen and other organic growth without...

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Softwashing Render: Can It Damage Your Walls?

Softwashing Render: Can It Damage Your Walls?

By Mark Cave July 03, 2026 |

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...

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Win More Exterior Cleaning Work: Proven UK Tips

Win More Exterior Cleaning Work: Proven UK Tips

By Mark Cave July 02, 2026 |

How to Win More Exterior Cleaning Work To win more exterior cleaning work in the UK, you need to do three things consistently: present yourself as a trusted specialist, quote work professionally, and deliver results that customers can see, understand and recommend. The contractors who grow are rarely the cheapest....

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Soft Wash Calculator App

Now you can say I've got an app for that!

    

Available NOW Click Here To Download

Softwashing calculator is an indispensable tool for juggling complicated chemical mixes. It helps reduce wastage and keeps operating costs down by giving accurate proportions

If you are having difficulty getting your head around the maths, trying to work out what percentage of softwash you need, how much chemical, surfactant and water to add, then this is the App for you.

 

 


The Soft Wash Calculator App allows you to work out your soft wash recipe by telling you exactly how much chemical, how much water and how much surfactant to add to get the desired soft wash recipe.
It doesn't stop there!.
- It can also remix your leftover softwash to a new stronger or weaker recipe.
- all controls in one place for see at a glance operation
- ease of input via pre-loaded dials. no more calculator style typing
- instantly responds to changes of complex combinations
- works in both Litres and US Gallons
- tested for Protan and Deutan colourblind users
- links to SoftwashingUK website

Take this scenario
You started with a 1% soft wash recipe of 50 gal (or litres)  for a deck clean and you’re left with 13 gallons.

You get a call from a prospective customer to clean their roof. Past experience tells you a 4% soft wash recipe is needed, but what about your leftover mix at 1%?.

Do you waste time and effort driving back to base to transfer into a standby tank?
You could consider the 13 gal as just water, top up the tank and start again.  
But that’s throwing away the value of the mix and raising your overhead.

Soft Wash Calculator App to the rescue.

You get to the new job and it requires 100 gal / litres.
Switch into remix mode , confirming the 13 gal already in the tank
Move the dials to your new recipe and the app immediately updates the different amounts to add in front of your eyes including the correct amount of extra surfactant.

You now have a 100 gal / litres tank of 4% soft wash recipe ready for your roof clean job!

Not forgetting you’ve saved money too, all without stress and uncertainty . Don’t underestimate what confident calmness has on your customer putting out referrals.

The same applies if you have a 4% recipe left in your tank and you need to dilute it down to 2%. Again the app will tell you how.

Softwashing calculator will also work for any chemical recipe. For instance you can use it for Sodium Hypochlorite, Bleach, Biocide , TFR traffic film remover and degreaser. Even the mathematically-challenged rocket scientist can top up their booster tanks to new fuel mixes after launch delays caused by changing weather conditions.

Using this app you will know exactly what chemical strength to put on any surface giving you the confidence and the knowledge of a professional soft washer and you’ll save money as well.

So if you have little knowledge of how to mix a soft wash recipe then this app is for you.
If you have little knowledge of how to remix a soft wash recipe then this app is for you.
If you want to save money when mixing a soft wash recipe then this app is for you.

This app is also backward compatible to devices running iOS7. We've done this so you can re-purpose an old iPhone 4 or iPod Touch 5  for what could be hazardous work environments. Just toss one in your cleaning van's toolkit.

Once you learn the methods and procedures of how to apply the soft wash to the different surfaces that need cleaning you’ll be unstoppable!

The app also has  a guide to what percentage for what surface. And if you are the lucky owner of a Clever Injector it will remind you the correct setting for the job.
However you should always consider and risk assess what soft wash recipe you need to clean the surface.

** A major iOS code-base change may require a re-purchase. The appiverse at the time will confirm our promise that we won't do so unless the necessity is apparent.



 

 

Available NOW