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Soft Washing Rendered Surfaces: Maintenance Tips Every Contractor Should Know

Looking to protect and maintain your property’s render with proven soft wash techniques? You’re in the right place. At LNI Equipment, we provide the gear, chemicals, and knowledge that professionals across the region rely on to get the job done safely—and get it done right.
 
Whether you're cleaning K-rend, painted stucco, or lime render, these tips will help you clean more efficiently and preserve surface integrity over time.

Why Soft Washing Is Ideal for Render

Soft washing is a low-pressure cleaning method that uses chemical solutions (typically sodium hypochlorite with a surfactant) to break down algae, mold, dirt, and biological growth—without high-pressure damage.
 
It’s the only safe and effective solution for delicate render systems, especially on older homes, textured finishes, or colored coatings that can erode or streak under pressure.

Practical Tips for Long-Lasting Render Maintenance

1. Choose the Right Chemical Blend

For rendered surfaces, using the correct dilution of SH with a quality surfactant is critical.
 
LNI Recommended Solutions:
  • Sodium Hypochlorite (12.5%) – powerful but safe when diluted
  • Blue Crush – surfactant that clings to vertical surfaces and prevents streaking
  • Lemon Drop – a bleach mask that improves client experience and reduces odor
  • Roof Guard – for improved dwell time, especially in cooler conditions
Typical SH dilution for render: 0.5–1% depending on growth severity.
 
 

2. Stick to a Regular Cleaning Schedule

Waiting until your render is visibly green or stained makes cleaning harder and less effective. Routine maintenance helps avoid deep staining and reduces chemical use over time.
  • Inspect render every 6–12 months
  • Spot treat high-growth areas as needed
  • Perform a full soft wash every 18–24 months
 

3. Use the Right Equipment

Even spray coverage and low-pressure flow are critical for render work. Avoid the temptation to grab a pressure washer.
LNI Equipment Carries:
  • 12V Soft Wash Pumps
  • Fan Tip Nozzles for uniform application
  • Hose Reels + SH Tanks
  • Proportioner Valves for chemical control
Need help building a dedicated render cleaning setup? We’ll walk you through it step-by-step.
 
 

4. Protect Plants and Property

Soft washing done carelessly can harm nearby landscaping. Take proper precautions:
  • Pre-wet all nearby vegetation
  • Use tarps on sensitive areas
  • Rinse thoroughly after application
  • Keep a neutralizer in your kit—just in case
Contractors who rinse and prep properly reduce callbacks and maintain a clean, professional reputation.
Ready to

Ready to Improve Your Render Maintenance Game?

At LNI Equipment, we stock everything you need to clean render safely and efficiently—plus real-world advice from pros who do this work every day.
 
Shop Online: lniequipment.com
Call or Text: 732-522-8880
 

Bonus Tip: Want to Build a Full Soft Wash Rig?

We offer:
  • Prebuilt trailer systems
  • SH and surfactant packages
  • Hose reels and pump kits
  • Custom setup guidance for your business
Let’s build something that works for how you clean.