Moss Growing in Your Brick Walkway? Here's How to Remove It
- Nick Corbelli
- Mar 15
- 3 min read
Moss grows in brick walkway joints because the cracks hold moisture, shade blocks sunlight, and organic debris collects between the bricks. Professional pressure washing removes moss from brick walkways without damaging the brick or mortar. Window Cleaning Wizards cleans brick walkways, patios, and pool decks across Wilmington, Leland, Porters Neck, Ogden, and Southport.
Why Moss Grows So Fast on Brick in Wilmington NC
Wilmington's climate is ideal for moss. The NC State Extension service notes that moss thrives in environments with consistent moisture, shade, and acidic soil. Southeastern North Carolina checks all three boxes. Sandy, acidic soil is common in Porters Neck, Ogden, and throughout Brunswick County. Add in the regular rainfall and humidity, and moss has everything it needs to spread across brick and concrete surfaces.
North-facing walkways and areas under tree canopy are the worst. Homeowners in Brunswick Forest and Southport often find thick moss patches on walkways that get less than four hours of direct sunlight per day.
Why Moss on Brick Is More Than a Cosmetic Problem
Moss is a slip hazard. When wet, moss-covered brick becomes extremely slippery. According to the CDC's falls prevention data, falls are the leading cause of injury for adults over 65. A mossy walkway in front of your home is a genuine safety risk, especially after rain.
Moss also pushes into mortar joints and breaks them apart over time. As moss roots grow deeper into the cracks, they widen the gaps between bricks. Left unchecked, the walkway becomes uneven and may need repointing or relaying.
Moss Removal Methods Compared
Method | Effectiveness | Drawbacks |
Scraping by hand | Removes visible moss only | Back-breaking, roots remain, regrows in weeks |
Vinegar or bleach solution | Kills surface moss temporarily | Can discolor brick, kills nearby plants |
Professional pressure washing | Removes moss, roots, and staining completely | Higher cost, but results last months |
A trained crew uses the right pressure setting for brick so the mortar joints stay intact. At Window Cleaning Wizards, we also post-treat the surface with an algae inhibitor that slows moss regrowth. That extra step is included in every pressure washing service we perform.
Frequently Asked Questions
Will pressure washing damage my brick walkway?
Not when done by a trained crew using the correct pressure setting. Older, softer brick requires lower pressure than newer hard brick. A professional knows the difference and adjusts accordingly to protect your walkway.
How much does brick walkway cleaning cost in Wilmington?
Most brick walkway pressure washing in the Wilmington area costs $75 to $200 depending on the length and condition. Heavily mossed areas may cost slightly more due to the additional treatment time.
How do I keep moss from growing back?
Trim tree branches to increase sunlight on the walkway. Sweep leaves and debris off regularly. After professional cleaning, the post-treatment algae inhibitor slows regrowth for several months. Annual pressure washing keeps moss from ever getting established again.
Is moss on brick walkways dangerous?
Yes. Wet moss is extremely slippery and is a common cause of slip-and-fall injuries on residential walkways. It also damages mortar joints over time, making the walkway uneven and creating additional tripping hazards.
Moss makes your walkway slippery and slowly tears it apart. One professional pressure washing fixes both problems. Call Nick and Chris at 910-727-4336 for a free estimate on brick walkway, patio, or driveway cleaning in Wilmington, Leland, Porters Neck, or Southport.
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