By Drew Dykes | August 9, 2018 | Updated: September 10, 2019 | 5 min read
What is Soft Washing?
Soft washing is a highly effective cleaning method for your home’s exterior that uses low pressure and specialized chemical solutions to safely remove organic stains. This technique excels at eliminating mildew, bacteria, and algae from roofs and other exterior surfaces without the potential damage that high-pressure washing can cause.
When executed properly, soft washing delivers exceptional results efficiently. However, working with the necessary chemical mixtures requires knowledge and caution to ensure both safety and effectiveness.
Essential Chemicals for Soft Washing
Primary Ingredient: Sodium Hypochlorite
Sodium Hypochlorite—commonly known as bleach or chlorine—serves as the main active ingredient in soft wash solutions. This powerful cleaning agent is mixed with water and specialized surfactants that help the solution adhere to surfaces for optimal cleaning performance.
Finding the Right Chemical Concentration
Chemical mixture ratios vary based on personal preference and experience, but the key is finding the balance that works for your specific needs. Once comfortable with basic mix rates, you can adjust concentrations based on:
- Heavy contamination: Increase concentration for roofs or homes with years of mold and algae buildup
- Delicate surfaces: Reduce concentration for sensitive areas or newer contamination
Critical Safety Note: Sodium hypochlorite poses risks to plants and animals. Too strong a mixture can “burn” or kill landscaping, while too weak a solution won’t effectively remove algae and organic growth.
Determining the Optimal Mixture Strength
There’s no single “perfect” mix ratio—the ideal concentration depends on several factors including equipment quality, job frequency, and specific cleaning requirements.
Professional vs. DIY Considerations
Professional Operations: High-quality equipment enables efficient daily service, requiring precise mixtures for maximum productivity.
DIY Homeowners: Annual cleaning projects allow for more flexibility. Start with lower concentrations and gradually increase until achieving desired results.
Pro Tip: In Florida’s intense heat, efficiency matters. Finding your optimal mixture saves time and reduces exposure to harsh conditions.
How Soft Washing Works
Direct Application Method
True soft washing pumps the chemical mixture directly from a dedicated tank. Our professional setup includes:
- 100-gallon chemical tank
- 7 GPM pump
- Specialized chemical hose and sprayer
- Interchangeable nozzle tips for different applications
Our Standard Mix: 50% water / 50% chlorine provides sufficient cleaning power for roofs and stubborn areas while remaining safe for properly protected plants.
Application Technique
Use wide, fan-pattern nozzles to:
- Evenly distribute the mixture across maximum surface area
- Minimize runoff that can cause streaking
- Prevent excessive chemical concentration in landscaping areas
Plant Protection Strategy
Before Starting:
- Pre-wet all plants with water
- Have someone follow with a garden hose to rinse any chemical drips
- Pay special attention to homes without gutters where runoff flows directly onto landscaping
Remember: This method delivers excellent results but requires experience to prevent property damage.
Understanding Downstream Injection
Downstream injection represents one of our preferred techniques for safe, effective cleaning.
How It Works
This system uses a suction line placed in the chemical tank that connects after the pump to inject a 20% mixture into the water stream during pressure washing.
Important: Always connect downstream from the pump to prevent chemical corrosion that dramatically reduces pump life.
Concentration Calculations
With downstream injection:
- Base mixture: 50/50 chlorine and water in tank
- Injection rate: 20% of base mixture enters water stream
- Final concentration: Only 10% of total spray consists of chemicals
Why We Prefer Downstream Injection
This method offers several advantages:
- Plant safety: Low chemical concentration prevents landscape damage
- Flexibility: Can increase base mixture concentration when needed
- Targeted application: Switch to direct soft wash system for stubborn spots only
Step-by-Step Soft Washing Process
Initial Application
- Coverage Phase: Apply chemical mixture evenly around the entire structure
- Dwell Time: Allow chemicals to break down algae and grime while completing the circuit
- Assessment: Identify areas requiring additional attention
Final Rinse and Touch-Up
- Rinse Phase: Return with clean water to remove loosened debris
- Pressure Adjustment: Switch to slightly higher pressure nozzle for stubborn areas
- Careful Cleaning: Exercise caution around windows, electrical outlets, fixtures, soffits, and painted surfaces
Safety Reminder: Even during touch-up work, avoid excessive pressure that could damage delicate surfaces.
The Bottom Line: Results vs. Risks
Professional pressure washing and soft wash cleaning can dramatically transform your property’s appearance. However, improper technique can cause expensive damage and safety hazards.
The difference between outstanding results and costly mistakes often comes down to:
- Chemical knowledge and mixing expertise
- Proper equipment setup and maintenance
- Understanding surface-specific techniques
- Plant and property protection protocols
Ready to Transform Your Property?
At Dykes Pressure Cleaning, we bring years of experience and professional-grade equipment to every job. Why risk damage to your valuable property when you can trust the experts?
Contact us today for your free estimate: 386-847-3626
Let our professionals handle the technical details while you enjoy the stunning results of expert soft washing services.
Serving Volusia County with professional pressure washing and soft washing services. Licensed, insured, and committed to exceptional results.
