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The Science Behind A Thorough Soft Wash

Let us take a look at what these two techniques actually are. Both high-pressure washing and soft washing do use a pressure washer to wash away any sludge, dirt, or grime on the surfaces. The difference between the two techniques lies in the mechanism used for the washing. Let us take a detailed look at them.

Roof Moss Removal

High-Pressure Washing

High-pressure washing requires a significantly greater amount of pressure. The force exerted by each water drop that lands on a surface are extra strong due to its kinetic energy. Thus, each drop behaves similar to a hammer and can blow away almost any kind of dirt buildup.

High-pressure washing is capable of cleaning surfaces so well that after cleaning, they shine as bright as new. Hence, this technique is very popular in removing wall graffiti, accumulated sludge, grime, and dirt from hard surfaces.

However, despite the benefits, high-pressure washing has many drawbacks due to the damage it can cause from the high pressure.

Drawbacks Of High-Pressure Washing

The major problem in high-pressure washing is that even the slightest jet of water aimed in the wrong direction on the structures can cause permanent physical damage. In most instances, the tiles can crumble or even dislocate. Moreover, it can create spaces between the roof tiles that can cause them to detach during a storm or strong wind completely. 

Therefore, you need to have the proper skills and practice to high-pressure wash a roof. As beneficial as it is, you have to weigh the drawbacks as well before arriving at a decision. 

How Significant Is The Damage?

The damage that can be caused by a high-pressure wash depends on the circumstances surrounding the roof cleaning. However, incorrect washing can cause complete destruction of structures, cracks on surfaces, and even splinters. 

The worst-case scenario is having to completely replace structures such as roofs and gutters, which can cost you a lot.

Soft Washing

Despite the use of a pressure washer, a soft wash is not forceful. Soft washing is based on surfactants and detergents. When sprayed onto a surface that needs cleaning, these solutions work inside out to destroy the grime and sludge. 

The pressure used for soft washing is less than 500 PSI, which is not as harmful as a high-pressure washer. Thus, it is suitable for home-use and has a lot less negative impacts.

How Do You Soft Wash A Surface?

  1. First and foremost, the water and detergent solution is sprayed onto the roof surfaces. When doing so, you have to make sure that you touch each nook and crook within the structure, including the gutter cleaning and drains. 
  2. Next comes the waiting period – also known as the dwelling time. During this period, the solution will begin to destroy any dirt it touches. Hence, you need to wait for the cleaning solutions to work its magic, which is typically about 20 to 30 minutes.

But depending on the extent of the dirt collected, you can increase the dwelling time as you see fit. 

  1. Once the dwelling time is completed, the roof should be washed with low-pressure streams of water. The dirt and grime destroyed by the solution will wash along with the water. 

Benefits Of Soft Washing

In addition to eliminating the risk of the damage caused by high pressure, soft washing is also known to be a mechanism that can clean structures beyond the surface. It can seep into the dark areas and destroy the grime and dirt buildup at the root level. They are also known to be capable of killing bacteria and thus, facilitating a safer environment for you to live in.

Therefore, a soft wash can do a considerably better job in roof cleaning compared to a pressure wash. 

Is Soft Washing Always The Best Option?

Both techniques do have their own pros and cons. Even soft washing has a disadvantage when it comes to the detergent solutions used. The biodegradable cleaning solutions can have an adverse impact by reacting with the plants and landscape ornaments that are located in the surrounding area. But more often than not, soft washing is preferred since it is capable of cleaning thoroughly while also preserving the external appearance of the structure.

Therefore, we always encourage you to seek the help of a professional who can investigate your roof and tell you what your best option would be. After all, they have years of experience in roof cleaning. Hence, visit us at Vancouver Roof Cleaners for any doubts or clarifications.

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