What is Soft washing?
Put simply, it’s not hard washing. If you think of pressure washing: The pressure put out by a power washer is measured in PSI (pounds per square inch), and the PSI requirements can vary based on what you’re aiming to clean. This is hard washing.
For example, it’ll take a lot less pressure to clean dried mud and road salts from your vehicle than it will take to strip paint from brick.
Another factor that’s equally as important, but not often considered, is the litres per minute rating (LPM). This measures how much water your pressure washer puts out per minute, and more water equals faster cleaning. It could be 11, 15 or 22 litres per minute.
Some of the commercial pressure washers can give out over 4000 PSI. That’s a lot of pressure. (Hard washing).
Pressure washing isn’t soft washing. So what is soft washing? The clue is in the name or expression.
Applying a treatment to the substrate you want to clean without a threat of damage by forces such as pressured water; wire brushing or other forms of the more aggressive applications.
Soft washing is applying a biocide (life-killer) particularly in relation to killing off unwanted weeds or plant growth which is unsightly or causing a structure hazard or health hazard.
Soft washing is an application achieved from low pressure dedicated pumps where measurements of commonly used products, mainly sodium hypochlorite (bleach) and detergents can be precisely metered and applied. And so Soft washing is applying the correct amounts of sodium hypochlorite (bleach) mixed with a small amount of surfactants and a larger volume of water in a responsibly controlled way to the area with the purpose of killing off of organic stains as well as algae, bacteria, fungus, lichens, mildew, moss or mould.
If there is a build-up of moss on a roof then it is recommended to use roof scrapers that will not cause damage to the roof tiles such as a nylon roof scraper. Appropriate quantities as well as often more than one application of biocide are applied. This treatment provides many years of unwanted re-growth of algae and moss.
If you are a patient customer then you can save money using this method as a two stage process in which the roof will be clean by month 8- 12.
The quicker added alternative (three stage process) is by applying hot water pressure washing to the roof tiled surface which when used correctly and responsibly will yield satisfying, desirable and immediate results (same day or next day depending on the size of the roof).
Soft washing is a very effective method to treat organic growths and colonies of algae. Sometimes all that is needed and should be used especially of many types of rendered walls is biocide, soft brushes and low pressure (garden hose) water to rinse off.
“Applying best techniques in this industry”
Moss Monster Ltd accepts no liablity for any direct or indirect loss or damage from following advice on this website