What Is Soft Washing?

Soft washing is a cleaning technique that utilizes low-pressure water, typically between 150–300 PSI, combined with a mixture of cleaning solutions to safely clean exterior surfaces. 

This method is widely used for removing organic stains such as mold, mildew, algae, and moss without causing damage to delicate materials. 

The cleaning solutions often include a combination of bleach, surfactants, and water, which help break down and remove contaminants effectively.

A man soft washing brick siding

Key Features of Soft Washing

Low Pressure

Unlike pressure washing, which relies on high-pressure water to blast away dirt and debris, soft washing employs a gentle approach. The chemical mixture does the heavy lifting by loosening and eliminating stains without the need for excessive force. This makes soft washing a safer alternative for surfaces prone to damage from high-pressure methods.

Unique Chemical Solution

The soft washing process incorporates soft wash cleaning solutions that are typically biodegradable and eco-friendly. These solutions are designed to be safe for use around plants, pets, and people while effectively breaking down organic matter and grime. The chemicals used in soft washing not only clean but also prevent future growth of mold and algae, providing longer-lasting results compared to traditional pressure washing.

Surface Protection

One of the main advantages of soft washing is its suitability for delicate surfaces. High-pressure washing can strip paint, damage wood, and dislodge roofing materials. In contrast, soft washing is ideal for surfaces such as:

  • Roof shingles – Prevents granule loss and extends roof life.
  • Wood paneling – Avoids splintering and damage to finishes.
  • Windows and screens – Prevents cracks and breakage.
  • Vinyl siding – Cleans without warping or denting the material.

Health Benefits

Soft washing contributes to a healthier home environment by removing contaminants like mold, mildew, and bacteria. These microorganisms can contribute to respiratory problems and allergies. By eliminating these harmful elements, soft washing improves air quality and reduces the risk of health issues associated with mold exposure.

Comparison: Soft Washing vs. Pressure Washing

To better understand the benefits of soft washing, it is helpful to compare it with traditional pressure washing:

FeatureSoft WashingPressure Washing
PressureLow (150–300 PSI)High (1,300+ PSI)
ChemicalsRequiredOptional
SurfacesDelicate surfacesStrong surfaces like concrete
Environmental ImpactMore eco-friendlyLess eco-friendly due to higher water usage
LongevityLonger-lasting effectsMay require frequent cleaning
Risk of DamageMinimalHigh, especially on fragile surfaces

Where Soft Washing Is Better Than Pressure Washing

Soft washing is best suited for cleaning sensitive, easy to damage parts of your home such as roofs, siding, fences and gutters.

Roofs

Soft washing is particularly beneficial for roofs, as it removes black streaks caused by algae growth while preventing deterioration. This method helps protect roofing materials, extending their lifespan and maintaining their appearance without the risk of damage from high-pressure washing.

House Siding

House siding, including vinyl, stucco, and wood, also benefits from soft washing. This gentle yet effective approach eliminates dirt, mold, and mildew safely, preserving the integrity of the siding without causing cracks, warping, or discoloration.

Decks and Fences

Decks and fences made of wood or composite materials can be effectively cleaned using soft washing. This process helps maintain their structural integrity and aesthetic appeal, preventing premature wear and damage caused by high-pressure methods.

Gutters

Gutters often accumulate dirt, mold, and mildew, which can impact their function and appearance. Soft washing restores them by safely removing buildup, ensuring they remain clean and free-flowing while preventing potential clogs and damage.

Screen Enclosures

Screen enclosures, which are delicate and prone to damage from high-pressure cleaning, benefit greatly from soft washing. This method thoroughly cleans screens without tearing or warping them, keeping enclosures clear, well-maintained, and in optimal condition.

Steps Involved in Soft Washing

Preparation

Before starting the soft washing process, it is essential to take precautions to protect the surrounding environment. Nearby plants should be covered or pre-wetted to minimize chemical absorption and prevent damage. Additionally, all windows and doors should be securely closed to avoid water penetration inside the property.

Mixing the Cleaning Solution

The cleaning solution used in soft washing typically consists of a carefully balanced mixture of bleach, water, and a surfactant. This combination helps break down dirt, mold, mildew, and algae while ensuring the solution adheres effectively to surfaces for optimal cleaning results.

Application

Once the cleaning solution is prepared, it is applied using a low-pressure spray system. This gentle approach allows the solution to coat the surface evenly, penetrating and loosening contaminants without causing damage to delicate materials.

Dwell Time

After application, the cleaning solution is left on the surface for a designated period. This dwell time allows the chemicals to work effectively, breaking down and eliminating mold, mildew, algae, and other organic buildup. The length of dwell time may vary depending on the severity of the stains and the type of surface being cleaned.

Rinsing

The final step involves rinsing the surfaces with low-pressure water to remove the cleaning solution and dislodged debris. This ensures that the surface is left clean and free of chemical residues, restoring its original appearance while preventing any potential damage from lingering contaminants.

Environmental Considerations

Soft washing is often considered more environmentally friendly than pressure washing. The key reasons include:

  • Lower Water Consumption: Uses significantly less water than pressure washing.
  • Biodegradable Chemicals: Most soft wash solutions break down naturally and do not pose significant environmental risks.
  • Longer-Lasting Results: Because soft washing kills the root of mold and algae growth, it reduces the frequency of cleaning, further minimizing water and chemical use.

Soft Washing vs. DIY Cleaning

Many homeowners attempt DIY cleaning methods, but soft washing by professionals offers superior results. Here’s a comparison:

AspectProfessional Soft WashingDIY Cleaning
EffectivenessHighly effective, kills mold at the rootSuperficial cleaning, may not remove deep-seated mold/algae
SafetyExperts handle chemicals and equipment safelyRisk of improper chemical handling
Time EfficiencyQuick and thoroughCan be time-consuming
Cost-EffectivenessLong-lasting, reduces need for frequent cleaningMay require repeated cleaning, increasing costs over time

Conclusion

Soft washing is a highly effective, safe, and environmentally friendly method for cleaning exterior surfaces. Unlike pressure washing, it relies on biodegradable cleaning solutions and low-pressure water to remove organic stains without causing damage. It is particularly beneficial for delicate surfaces like roof shingles, wood siding, and windows. Additionally, soft washing offers long-lasting results, reducing the need for frequent maintenance and contributing to a healthier home environment.

For homeowners and businesses looking for a cleaning solution that preserves their property’s integrity while delivering superior results, soft washing is the ideal choice.