What Kind of Chemical Do Commercial Pressure Washers Use on the Exterior of Wood

What Kind of Chemical Do Commercial Pressure Washers Use on the Exterior of Wood

Citric acid, oxalic acid, sodium hypochlorite, sodium hydroxide, etc., are used in commercial pressure washers detergent to clean dirt and stain from an exterior of wood or a wooden surface.

What kind of detergent should be used in a commercial cleaning machine to clean wooden stuff?

A wonderful invention by scientists is a pressure washer where water is drawn from a source; pressure is generated and applied on a surface to clean any dirt or stain. This machine has changed the concept of cleaning in today’s world. Based on your different needs, you can choose from a wide variety of pressure washers. For cleaning heavy-duty dirt and stain, we use commercial pressure washers. Chemicals in the form of detergent can also be used in these devices to loosen the sticky, tough, and tough stains.

When we clean our stuff, we find different types of surfaces, and all of them don’t react in the same way to the chemicals. For this reason, we need to be cautious about what kind of detergent we are applying. Wooden stuff such as a fence, chair, table, and board cannot be cleaned in the same way a concrete surface is cleaned. You have to choose the soap containing the right type of chemicals for wood.

The Chemicals Used in Commercial Pressure Washing

Commercial Pressure Washers

Source: wp.com

Commercial pressure washers are primarily used to do heavy-duty cleaning such as cleaning oil, grease stains on a concrete surface, mold, algae from the wood surface, and many others. To clean a surface properly, we need to use soap or detergent that contains effective chemicals that loosen the dirt. In a detergent used for a commercial pressure washer, the chemicals found are bleach, ammonia, sodium hydroxide, sodium hypochlorite, potassium hydroxide, oxalic acid, citric acid, etc.

These chemicals remove the tough dirt such as grease, graffiti, paint and coating, mud, mold, algae, and plenty others. In different pressure washer detergents, you will find the presence of different chemicals that work better on different types of surfaces to clean tough stains.

Many of these chemicals are found in the market as a form of detergent and soap, which are mainly made in factories. Apart from these, many users even make their homemade detergents by combining different chemicals. Unfortunately, homemade detergents don’t always perform as well as the ones that you buy from the market.

What Do You Spray on Siding Before Pressure Washing?

Sidings of a house or a fence protect us from many unwanted intruders which make them dirty. As stated earlier, we need to apply soap on tough dirt and stains to make them weak before cleaning them with water. If you leave this dirt on them for a long time, they will damage those parts of your sidings. So it’s always a wise decision to clean them timely, and for that, your pressure washer can be very useful. 

Before you clean a siding, you must apply soap on it and leave it for some time to weaken the sticky dirt. The chemicals present in a detergent are dirt specific, and for that, detergent should be bought by keeping the types of dirt in mind. After 10-15 minutes of soap application, you can pressure wash the siding to make it look new. 

Can You Use a Pressure Washer on Wood?

Commercial Pressure Washers

Source: horticulture.co.uk

Wooden furniture or stuff such as a wooden fence takes a lot of energy to clean, where you can reduce your effort by using a pressure washer. Wooden walls are not as strong as metal or concrete; for that, you need to be careful in choosing your nozzle.

A pencil jet nozzle should always be avoided while cleaning a wooden surface as a 0-degree nozzle has the capability to damage. 15 & 25-degree nozzles are best for cleaning a wooden fence though the power of a machine also determines what type of nozzle needs to be used. Highly pressurized and concentrated water will easily damage the wooden particles. You must be careful while cleaning wood with your pressure washer.

Electric pressure washers are often considered suitable for cleaning wood because of their low power. You can even reduce the force of water by using different nozzles, perfect for delicate surfaces like wood. For example, removing paint from a wooden wall might require high-pressure water.

Does Power Wash Use Chemicals?

Chemicals and detergents are very closely related to pressure washers. When the only pressurized water cannot remove a stain or mark, chemicals or detergents come in a big help. If applied, these chemicals react with the particles present in the dirt and make them weak. Once these stains and grease become weak, you can easily remove them by power washing.

Detergents are made from chemicals such as bleach, vinegar, oxalic acid, sodium hydroxide, citric acid, etc. Most pressure washers allow the application of detergent to provide a better cleaning experience. From this point of view, we can say chemicals have a close relation with power washing.


Chemicals and pressure washers go hand in hand. Various kinds of chemicals do commercial pressure washers use to clean the exterior of wood. Some of the chemical combinations are made in factories, and some are made at homes. For better washing, chemicals are very effective. But, it’s important to choose the right type of detergent so that the wooden surface is not damaged. Unfortunately, some chemicals are also harmful to our skin where we have to be even more cautious.