What Causes Sidewalks to Turn Green?

Green sidewalks are typically caused by algae and organic growth that develop on concrete surfaces exposed to moisture and limited sunlight.

In Clarksville, sidewalks often turn green due to:

• humidity and frequent moisture
• shaded areas with little sun exposure
• tree coverage and organic debris
• poor drainage or areas that stay damp

Because concrete is porous, moisture and organic material settle into the surface, allowing algae to grow and spread over time.

Why Green Sidewalks Become Slippery

Algae creates a thin, slick layer on the surface of concrete. When combined with moisture, this can make sidewalks extremely slippery.

This can lead to:

• increased slip-and-fall risk
• unsafe walking conditions
• buildup that spreads quickly across surfaces

Even small areas of algae growth can become hazardous, especially after rain or early morning dew.

Why This Is a Bigger Problem in Clarksville

Clarksville’s climate makes algae growth more aggressive than in drier regions.

The combination of:

• humidity
• seasonal rainfall
• shade from trees and structures

…creates ideal conditions for algae to return quickly if it is not properly treated.

What NOT to Do

Many homeowners try to clean green sidewalks themselves—but often make the problem worse.

Avoid:

• uneven pressure washing with a wand
• leaving streaks or missed areas
• using improper cleaning solutions
• ignoring the buildup until it spreads

DIY attempts often leave uneven results or allow algae to return quickly.

The Best Way to Clean Green Sidewalks

The most effective solution is professional sidewalk cleaning using the proper equipment and cleaning process.

Professional cleaning includes:

• surface cleaner pressure washing for even results
• removal of algae and organic buildup
• proper treatment of affected areas
• restoration of clean, safe concrete surfaces

This process removes slippery buildup and improves both safety and appearance.

Professional Sidewalk Cleaning in Clarksville, TN

Exterior Solutions provides professional sidewalk and curb cleaning in Clarksville to remove algae, dirt, and years of buildup from concrete surfaces.

Our process:

• restores safe walking surfaces
• removes slippery algae growth
• improves the appearance of your property

If your sidewalks are turning green and slippery, professional cleaning is the safest and most effective solution.

When Should You Clean Your Sidewalks?

If you notice:

• green discoloration
• slippery areas
• spreading buildup
• uneven staining

…it’s time to have your sidewalks professionally cleaned before the problem worsens.

Serving Clarksville and Nearby Areas

Exterior Solutions provides sidewalk cleaning services throughout:

Clarksville
Sango
Pleasant View
Adams
Oak Grove
Hopkinsville