The Hidden Dangers of Using Bleach in Pressure Washing

Bleach is often promoted as a quick solution for cleaning exterior surfaces, but when it comes to pressure washing, it may be doing more harm than good. While it might appear to kill mold and mildew effectively, using bleach can lead to serious environmental, structural, and health-related consequences.

1. Damage to Surfaces

Bleach is highly corrosive. When used in pressure washing, especially on wood, vinyl siding, or concrete, it can cause:

• Discoloration and fading
• Surface degradation over time
• Breakdown of protective coatings like paint or sealant

2. Environmental Impact

When bleach runs off into the soil or storm drains, it doesn’t just disappear—it enters our local ecosystems. This can lead to:

• Water contamination
• Damage to plants and grass around your home
• Harm to aquatic life if it reaches lakes, rivers, or streams

3. Health Risks

Bleach fumes and residue can be dangerous to humans and pets. Exposure can cause:

• Respiratory issues and irritation of the lungs
• Skin and eye irritation
• Harmful reactions when mixed with other chemicals

4. It’s Often a Temporary Fix

Bleach may bleach away the color of mold and algae, but it often doesn’t fully remove the spores or roots. That means the problem may return sooner than expected—especially in damp or shaded areas.

A Safer Alternative: Eco-Friendly Pressure Washing

Instead of relying on harmful chemicals, modern pressure washing methods use high-pressure water, biodegradable solutions (when needed), and steam or heat to tackle tough grime. These methods are:

• Safe for your property and landscaping
• Better for the environment
• Effective at long-term mold and mildew removal

About The Author

nt

See author's posts