What is the Difference Between Soft Washing and Pressure Washing

Feb 29, 2024

So, what specifically is the difference between soft washing and pressure washing?

Pressure Washing

Pressure washing is the only way to clean tough built-up moulds, mildews, stuck-on dirt or mud, and general grime, on hard surfaces like driveways, cement patios and sidewalks. Special pressure equipment is used to deliver water at high pressure to cut through this build-up, or anything else in the way if the operator is not careful. Handling pressure washing equipment can be pretty tricky and dangerous. Pressurized water can easily injure.

Soft Washing

Soft Washing uses much lower pressure and so, does no damage to more fragile surfaces, like siding or windows. With about 12-volts you can maintain the correct pressure of 60 PSI (Pounds per Square Inch). The detergent does the work of cleaning. Both the detergent and the organic build-up are then rinsed off with clean water at low pressure.

Alblaster uses a cleaning solution that is frequently used today– Sodium Hypochlorite (bleach) with a surfactant (or foaming agent). It is safe for small amounts of this solution to be used with water for cleaning. It is the same solution used for treating drinking water and cleaning swimming pools, although amounts are slightly higher than swimming pool water. With this solution, unsightly and damaging growth is dissolved, and debris is rinsed away with low-pressure water.

Benefits vs Drawbacks of Soft Washing and Power Washing

Washing Treatment Type	Benefits	Drawbacks
Soft Washing	Gentle cleaning, safe for delicate surfaces – Effective against mold, mildew, algae, and bacteria – Extends lifespan of surfaces – Improves curb appeal	May require multiple treatments for stubborn stains – Not ideal for heavily soiled surfaces
Power and Pressure Washing	Powerful cleaning for tough dirt, grime, and stains – Removes paint, loose mortar, and graffiti	Can damage delicate surfaces if not used properly – Requires more expertise and caution

Know the Difference Between Soft Washing and Pressure Washing

If you do want to keep it all clean and undamaged, the washing process used should be considered carefully. Some parts of your property that have tough, hard surfaces, with a build-up of grime, require pressure washing. Other parts of your property, like shingles (siding), or roofing should be soft washed so as not to damage the surface.

Soft Washing & Power Washing Head to Head

Washing Treatment Type	Temperature	Cleaning Solution	Pressure (PSI)	Best for
Soft Washing	Up to 60 degrees celsius	Uses specialized, biodegradable detergents	500 PSI or below	Wood, Vinyl, Strata
Power Washing / Pressure Washing	Up to 155 degrees celsius	Predominantly focuses on water pressure	1,500 – 4000 PSI	Driveways, Parking Lots, Walkways, Concrete, Sidewalks

Choosing the Right Washing Method

Soft washing is ideal for most exterior surfaces, especially those prone to organic growth like mold, mildew, and algae. It’s a safer option for delicate materials like vinyl siding, wood shingles, and asphalt roofs.
Power washing is best suited for tough cleaning jobs on hard surfaces like concrete, brick, and stone. It’s not recommended for delicate surfaces, as the high pressure can cause chipping, cracking, and even structural damage.

Additional Considerations for Power Washing and Soft Washing

Always consult a professional: If you’re unsure which method is right for your needs, it’s best to consult a professional cleaning company. They have the expertise and experience to assess your property and recommend the safest and most effective cleaning method.
Safety first: Your pressure washing contractor will prioritize safety by wearing proper personal protective equipment (PPE) and following the manufacturer’s instructions carefully.

By understanding the differences between soft washing and power washing, you can make an informed decision about the best approach for your building’s exterior cleaning needs, ensuring that it is sparkling clean.

Pressure Washing and Soft Washing in Action

Soft Washing

Pressure Washing

Soft Washing and Pressure Washing FAQ

Can soft washing extend the lifespan of my siding compared to traditional pressure washing methods?

Soft washing incorporates gentle water pressure combined with specialized cleaning solutions, effectively removing mildew, algae, and dirt without the risk of damage associated with high-pressure washing. This method not only cleans but also preserves your siding’s integrity, potentially extending its lifespan by preventing the wear and tear that high-pressure methods might cause.

Is there an eco-friendly advantage to choosing one washing method over the others?

Yes, each method has its environmental considerations. Soft washing often uses eco-friendly, biodegradable cleaning solutions that are safe for surrounding plant life and reduce water usage. Power washing, when done correctly, can be efficient with water usage and, if using hot water, may reduce the need for chemicals. We always aim to use the most environmentally responsible practices and products with each method.

How does weather and climate affect the choice between power washing and soft washing?

The local climate and current weather conditions can significantly influence the most effective and safe washing method. For instance, soft washing might be preferred in areas with a lot of moisture and mildew growth, while power washing could be more effective in regions that accumulate a lot of dust and grime. In colder climates, power washing with hot water can also be beneficial for removing ice or snow buildup.

Can the water pressure from power washing damage windows or other fragile surfaces?

High-pressure water can indeed pose a risk to fragile surfaces, including windows, light fixtures, and old wood. This is why we assess each situation carefully and may recommend soft washing or adjust our power washing techniques and equipment to safely clean sensitive areas without causing damage.

What advancements in washing technology are on the horizon?

The industry is constantly evolving with innovations aimed at improving efficiency, reducing environmental impact, and enhancing cleaning results. Future advancements may include smarter, AI-driven pressure washing equipment that adjusts pressure and cleaning solutions in real time, as well as more effective eco-friendly cleaning agents that offer the same, if not better, cleaning power without harming the environment.

How do soft washing and power washing affect the warranties on exterior finishes

Many manufacturers of siding, roofing, and other exterior finishes specify which cleaning methods are safe and recommended for their products. Using an unauthorized cleaning method, like high-pressure washing on certain types of siding, can void your warranty. We always recommend consulting your warranty documents and with us before deciding on a cleaning method to ensure compliance and protect your investment.

Can I switch between washing methods over the years, or should I stick to one?

Absolutely, you can switch between methods as needed. The best approach depends on the condition of your property’s exterior, the type of dirt or growth present, and the material of the surfaces being cleaned. We provide tailored advice on the most effective method for each situation, taking into account the long-term care of your property.

Soft Washing or Pressure Washing, Always Professionally Clean

A dedicated service like Alblaster knows the job and has this process down. When you’ve cleaned as much property as we have, you’re ready for just about anything. We know what method is best and just how to safely and effectively clean everything on your property. The Alblaster crew will bring all of the equipment to address any situation.

But that’s not all, Alblaster does a thorough job and always follows through. We don’t think you’ll find anything left to do once we have completed our job, but if you find anything, we’ll come back and get it done.

When you think about all of the benefits of letting a professional outfit like Alblaster do the job, we think you’ll decide to call Alblaster. Bottom line, we’ll save you the cost of time and trouble.

What is the Difference Between Soft Washing and Pressure Washing