How to Safely Clean a Brick School Sign — A Lakeside High School Success Story
Brick signs are iconic fixtures in communities—they represent history, pride, and identity. Whether it’s at the entrance to a neighborhood, business park, or a school like Lakeside High School, brick signage makes a memorable first impression. Over time, though, exposure to weather, pollution, moss, and mildew can make these signs look dull and worn.
Recently, Savannah River Pressure Washing had the privilege of cleaning the brick sign at Lakeside High School. The results were dramatic: years of built-up grime were removed, revealing the natural beauty of the brick without damaging the structure or surface. Here’s how we did it—and how you can safely clean brick signs without causing harm.
Why Brick Needs Special Care
Brick is not like concrete or vinyl. It’s a porous material made from clay that absorbs moisture. Because of that:
Harsh chemicals can seep into the surface and erode the brick or mortar.
High-pressure washing without control can “sandblast” and damage the face of the brick.
Improper cleaning can lead to uneven coloring, efflorescence (white salt staining), or mortar deterioration.
So the question many homeowners and property managers ask is simple:
How do I clean brick signs without damaging them?
Here’s the answer.
Step-by-Step: Safe Brick Sign Cleaning
1. Assess the Brick Condition First
Before any cleaning begins, we inspect the brick for:
Cracks in the bricks or mortar
Loose or missing mortar
Existing staining (rust, oil, biological growth)
Age and type of brick
This helps determine the safest cleaning method.
2. Pre-Rinse With Low-Pressure Water
We start with a gentle rinse to remove loose dirt and debris. This is important because:
It prevents grit from scratching the brick during cleaning.
It prepares the surface for the cleaning solution.
3. Use the Right Cleaning Solution
For brick, less is more. We only use pH-neutral cleaning solutions that are designed for masonry surfaces. These:
Break down dirt without harming the brick.
Are biodegradable and safe for nearby landscaping.
Don’t bleach or weaken the surface.
We apply the solution carefully, letting it work briefly without drying on the brick.
4. Controlled Soft Wash Technique
This is the key to cleaning brick without damage:
Instead of blasting at high pressure, we use a soft wash method — a gentle stream of water at lower PSI combined with our cleaning solution.
Why does this matter?
Protects the brick face and mortar joints
Ensures even cleaning without etching or pitting
Removes biological growth like moss or algae safely
For stubborn stains, we may agitate gently with soft brushes, never with metal or harsh tools.
5. Final Rinse and Inspection
Once the brick is clean, we do a thorough low-pressure rinse to remove all residue. Then we inspect the sign to ensure:
No cleaning solution remains
The brick surface looks uniform and natural
Mortar hasn’t been disturbed
Sometimes clients are shocked at how much brighter and cleaner the brick looks — all without any surface damage.
Why Choose a Professional for Brick Cleaning?
Cleaning brick signs isn’t a DIY job for most people. The risks of using the wrong chemicals or too much pressure can cause:
Permanent surface damage
Mortar weakening
Color loss or blotchy appearance
Professional pressure washers like Savannah River Pressure Washing use the right tools, expertise, and environmental controls to keep your brick looking its best while protecting its lifespan.
Lakeside High School: A Fresh Look
The Lakeside High School brick sign is now vibrant and welcoming, making a strong first impression for students, families, and visitors. If you drive by, you’ll notice:
Brighter, cleaner brick
No damage to the surface or mortar
A uniform appearance that enhances curb appeal
This project shows what’s possible when you clean brick the right way.
Your Turn: Clean Brick, No Damage
If you’re asking “How do I clean brick signs without damaging them?”, the answer is clear:
Use qualified professionals who understand:
Brick porosity and care
pH-neutral cleaning agents
Soft wash techniques
Proper inspection and post-wash evaluation
Ready to refresh your brick sign? Contact Savannah River Pressure Washing today for a consultation and keep your property looking its best!
Frequently Asked Questions About Cleaning Brick Signs
1. Can pressure washing damage brick signs?
Yes, if done incorrectly. High-pressure washing can strip the surface of the brick, damage mortar joints, and cause long-term deterioration. Brick is porous and requires a controlled, low-pressure soft wash method to clean safely. Using professional equipment and proper cleaning solutions prevents surface etching and protects the integrity of the sign.
2. What is the safest way to clean a brick school sign?
The safest way to clean a brick sign is with a soft washing technique that combines low-pressure water and masonry-safe cleaning solutions. This method removes dirt, algae, mildew, and buildup without harming the brick or mortar. Avoid harsh acids, wire brushes, or excessive PSI, as these can permanently damage the surface.
3. How often should brick signs be professionally cleaned?
Most brick signs should be cleaned every 1–3 years, depending on exposure to moisture, shade, and environmental buildup. Signs near trees or high-traffic roads may need more frequent cleaning due to algae growth, dirt accumulation, and pollution. Regular maintenance keeps brick looking vibrant and prevents long-term staining.
We offer free quotes in Evans- You can request your quote today.