Coquina House Washing | Soft Washing for Delicate Exteriors
Cleaning for your coquina house exterior has become very common. This is due to the growth or organic elements that favor coquina’s porous surface. Florida’s heat, humidity and afternoon rain eventually create the perfect environment for algae, mold and mildew to grow on coquina siding. Because coquina is one of the softest and most porous exterior finishes it requires a specialized cleaning process.
We often find damaged coquina finishes on the majority of homes we clean. Homeowner’s often think they can knock off some of the dirt and mold themselves if they are “careful”. Homeowner’s first try with their garden hose and then move onto their pressure washers and try to keep a safe distance.
At The Pressure Kru, we safely restore coquina exteriors using professional soft washing techniques that remove biological growth while protecting the decorative shell finish. Our low-pressure process cleans deeper than pressure alone and helps your home stay cleaner longer.
Why Coquina Homes Require a Different Cleaning Process
Unlike brick, stucco or concrete, coquina contains natural shell material that is extremely fragile.
Improper pressure washing can generally cause:
- Shell loss
- Surface erosion
- Etching
- Permanent texture damage
- Uneven coloring
Even a standard garden hose with the wrong nozzle can damage aging coquina surfaces. Instead, we apply professional cleaning solutions using specialized low-pressure equipment designed specifically for delicate substrates.
Remember, D.I.Y. cleaning of coquina is generally not a good idea.
Our Coquina Soft Washing Process
Every project begins with a full inspection of your home’s exterior. We typically take pictures of pre-existing damages, cracks in your finish, and plan routes for our hoses to ensure we don’t break sprinkler heads, etc…
Our cleaning process includes:
- Protection of windows, trim, and landscaping if necessary
- Eco-friendly soft washing treatment for mold and algae
- Removal of mildew and organic staining for decorative shell surfaces
- Gentle low-pressure rinsing
- Final quality inspection
Instead of blasting contaminants off the surface, our detergents eliminate biological growth deep inside the porous coquina, providing a longer-lasting clean.
Signs Your Coquina Home Needs Cleaning
If you notice any of the following, it’s time for professional soft washing:
- Green walls
- Black streaks
- Mold around soffits
- Mildew near gutters
- Dark staining
- Yellow pollen buildup
- Spider webs
- Dirt accumulation
Most homes in St. Johns eventually begin showing algae growth within 12 months due to Florida’s humid climate. Annual maintenance helps preserve your home’s appearance
Why Choose Us?
We have cleaned thousands of Florida homes and understand how different building materials respond to professional cleaning. Our customers choose us because we provide:
- Experienced coquina cleaning
- Low-pressure softwashing
- Environmentally responsible cleaning solutions
- Detailed workmanship
- Honest recommendations
- Professional equipment
- Respect for landscaping and property
Our goal is simple: restore your home’s appearance without risking damage to its delicate exterior.
Benefits of Professional Coquina House Washing
Routine cleaning helps:
- Improve curb appeal
- Remove slippery algae
- Reduce mold growth
- Protect exterior finishes
- Extend paint life
- Maintain HOA compliance
- Increase pride of ownership
- Prepare your home for sale
A clean exterior basically helps prevent organic growth from becoming deeply embedded in porous surfaces.
Areas We Serve
We proudly provide coquina house washing throughout St. Johns County including:
- Fruit Cove
- Julington Creek
- Aberdeen
- Jacksonville
- Ponte Vedra
- Nocatee
- Greencove Springs
- Durbin Crossing
- St. Johns Forest
- Mandarin
- Cimarrone
- Bartram Springs
- South Hampton
- Switzerland
- Greenbriar
Here is a great read on the P.S.I. operating ranges of a standard garden hose nozzle. The point is that your garden hose has enough pressure to damage the substrate.
Take a look through our before-and-after coquina cleaning gallery below. Which transformation is your favorite? Let us know!
Frequently Asked Questions
Traditional high-pressure cleaning should not be used on coquina. Professional soft washing safely removes mold and algae using low pressure.
Most St. Johns homes benefit from annual cleaning because Florida’s humidity encourages rapid algae growth.
Yes. Most organic staining caused by mold, mildew and algae can be safely removed through professional soft washing.
Yes. Proper preparation, dilution and rinsing procedures help protect surrounding plants and grass.
Most homes remain clean for approximately one year, although nearby trees, shade and moisture levels can affect results.