4 Ways to Clean a Flagstone Patio
Improper flagstone cleaning techniques can lead to permanent damage and costly repairs on flagstone surfaces. After installing quality pavers on patios, we share proper flagstone maintenance knowledge with our clients. When we tell them how to clean a flagstone patio to combat stubborn stains, here are the four techniques we typically share.
How to Clean a Flagstone Patio
To effectively clean flagstone pavers, you'll need different flagstone cleaning solutions depending on the type of stain. Mild detergent or dish soap works best for routine maintenance while baking soda tackles oil stains on flagstone surfaces. Oxalic acid removes rust stains, whereas white vinegar eliminates moss or mildew on flagstone patios.
While we follow ICPI guidelines for installing patios, pool decks, walkways, and driveways, dirt can inevitably stain your garden flagstone patio. Understanding which cleaning agent to use for specific problems helps you clean flagstone pavers safely without damaging the natural stone surface. Our clients save thousands of dollars in replacement costs by following these simple flagstone maintenance and cleaning techniques.
Preparing the Patio for Cleaning
Before using any of the methods to clean flagstone, you first need to make sure that the entire surface is free from obstacles. Here are some of the things you will need to do in this step:
Remove chairs, tables, planters, and other decorations to facilitate smooth flagstone cleaning.
Use a soft brush or leaf blower to sweep or blow away loose debris and dirt to achieve an even result at the end of the process.
Inspect the flagstone for tough stains to determine the right type of cleaning solution for the job.
Check for cracks or loose stones to prepare for replacement.
Method 1: Using Dish Soap or Detergent for Regular Flagstone Cleaning
Cleaning a garden flagstone patio is a simple process every homeowner can complete quickly. Among the simplest ways to clean flagstone is to use soap or detergent. You’ll need the following tools and materials:
A bucket
Detergent or soap
Stiff-bristle brush or a broom
A garden hose or a pressure washer
Follow these steps to clean flagstone using soap or detergent:
Fill the bucket with warm water and add a cleaning solution. For normal debris and dirt, you can use soap or detergent.
Dunk the brush in the solution and apply it to the entire surface. Start from one corner to the other to make sure you don’t leave out any area.
Allow the solution to sit for at least 30 minutes. This will help loosen the tough stains on the flagstone.
Scrub the patio. After 30 minutes, start scrubbing the surface. Scrub gently to avoid damaging the surface of the flagstone.
Rinse with clean water. Use a hose or a pressure washer to rinse the soap solution.
When using a pressure washer, adjust the pressure to around 1000 to 1500 PSI to maintain the structural integrity of the stones.
Method 2: Using Baking Soda Paste for Cleaning Oil Stains on Flagstone Pavers
To clean flagstone surfaces, you can also use baking soda paste, especially to eliminate grease stains. This method is particularly good for targeted stain removal. Gather these tools and materials:
Paper towels or absorbent materials
Baking soda
Warm water
Bucket (optional, for mixing)
Scrub brush or a broom
Garden hose
Follow these steps to clean flagstone using baking soda paste:
Start by blotting up any excess oil with paper towels or absorbent materials from the oil stains on your flagstone patio. This helps remove the bulk of the stain and dirt before applying the paste.
In a bucket or bowl, create a thick paste using a mixture of baking soda and warm water.
Apply the paste directly and generously over the oil stains and any other grease stains on the flagstone surface. Make sure the entire stain is covered.
Let it sit overnight or for at least six to eight hours. This enables the baking soda to absorb the oil and dirt embedded in the flagstone.
After the waiting period, gently scrub the treated stones with a scrub brush.
Finally, rinse the surface thoroughly with a hose to remove the baking soda residue and loosened debris. For stubborn stains, you may need to repeat the process.
Method 3: Using Oxalic Acid for Cleaning Rust Stains on Flagstone Surfaces
Rust stains on your garden flagstone patio can be an eyesore, often caused by exposed metal objects, like furniture or tools. Oxalic acid is an effective solution for cleaning these particular marks on flagstone surfaces. You'll need the following tools and materials:
Gloves
Protective eyewear
Powdered oxalic acid
Scrub brush
Water hose
Bucket (optional, for mixing if needed)
Follow these steps for cleaning rust stains from a flagstone surface:
Before applying the oxalic acid, dampen the affected area with water on the flagstone surfaces. This helps activate the acid and prevents it from drying too quickly.
Wearing gloves and protective eyewear for safety, sprinkle powdered oxalic acid onto the stain. For tougher flagstone stains, create a paste with a small amount of water in a bucket and apply it.
Using a scrub brush, gently work the oxalic acid into the rust stains. Focus on the discolored stones and avoid spreading the solution to the entire patio if not necessary.
Let the cleaning solution soak the stones for 15 minutes. During this time, the oxalic acid will work to break down the rust.
Thoroughly rinse the flagstone surface with a hose to remove traces of oxalic acid and any loosened debris. Make sure no residue is left on the flagstone patio.
Regular maintenance and prompt removal of metal objects will help prevent future rust stains. For widespread or deeply set stains, consider professional pressure washing as part of your flagstone maintenance.
Method 4: Using White Vinegar for Cleaning Moss and Mildew on Flagstone Pavers
Moss or mildew growth is a common problem on a shaded flagstone patio, often due to persistent moisture. White vinegar provides an effective and natural solution for cleaning unsightly green patches on flagstone pavers. First, gather these tools and materials:
White vinegar
Water
Spray bottle
Scrub brush
Water hose
Bucket (optional, for mixing)
Follow these steps for flagstone cleaning of moss and mildew:
To prepare the cleaning mixture, mix equal parts white vinegar and water in a bucket. This dilutes the vinegar to a safe and effective concentration for your flagstone surfaces.
Pour the mixed solution into a spray bottle. This allows for easy and targeted application onto the flagstone areas with moss or mildew growth.
Spray onto the moss or mildew-affected areas on your garden flagstone patio. Saturate the entire patio, especially the affected stones.
Let it sit for 15 minutes. This enables the acidic properties of the vinegar to break down the moss and mildew, making it easier to remove dirt and debris.
Using a scrub brush or a soft brush, scrub the treated areas. You will see the green patches loosen and detach from the flagstone surfaces.
Finally, rinse the flagstone patio thoroughly with a hose to wash away the loosened moss, mildew, and cleaning mixture. For extensive growth, consider professional flagstone cleaning and occasional pressure washing to prevent recurrence.
Sealing a Flagstone Patio
You will need this to seal the surface to protect a garden flagstone patio from stains and UV light. Applying a sealant after you clean the flagstone is a vital part of maintenance because it protects the flagstone from future stains and weathering, extending its lifespan and preserving the aesthetic appeal of your outdoor space.
Wait until your garden flagstone patio is completely dry and free from any debris before applying sealant. This is one key factor for proper adhesion and effective maintenance.
Apply the sealant evenly across the flagstone surfaces using a sprayer, roller, or brush, following the manufacturer's instructions for the specific product.
Allow the first coat of sealant to penetrate the flagstone and dry according to the recommended time, usually a few hours.
Consider a second coat for enhanced protection and durability in your flagstone cleaning routine.
After applying the final coat, allow the sealant to cure completely (typically 24-48 hours) before resuming normal foot traffic and enjoying your newly protected flagstone patio as part of your ongoing maintenance.
That’s it! Once you clean flagstones and apply a sealant, your flagstone patio will be ready for use.
How to Increase the Lifespan of a Flagstone Patio
Well-maintained homes with quality landscapes have a 20% to 30% higher resale value compared to those without quality landscaping. However, when flagstone becomes dirty and starts to look neglected, it can detract significantly from this value, making an otherwise beautiful home appear unkempt and uninviting.
Most homeowners grapple with stubborn stains, weathering, mold growth, and the delicate nature of a garden flagstone patio. Remember these flagstone maintenance tips to keep your garden flagstone patio in tip-top shape.
Regular cleaning: Make sure to clean your flagstone patio regularly to remove stains, dirt, and other debris.
Proper sealing: Apply a high-quality sealant to protect flagstone surfaces. This helps protect them from tough stains and UV lights.
Avoid harsh cleaners: Instead of harsh chemicals like bleach, use mild cleaning solutions like dish soap or white vinegar to prevent damage to flagstone.
Weed control: Regularly inspect the flagstone patio to check for weeds. Weeds can grow between the paving stones, causing shifting and uneven surfaces over time.
Aside from flagstone cleaning and maintenance, are you looking to install a new paver patio, driveway, walkway, or pool deck? If so, then Aviara Pavers can get the job done at an affordable fee. Our San Diego company is a reputable entity with experienced professionals.
Related Questions
What Is the Best Thing to Clean the Flagstone With?
The best things to clean flagstone depend on the type of stain. For example, dish soap is effective for general flagstone cleaning, while vinegar is excellent for mildew. For more specific problems, baking soda can tackle oil stains, and oxalic acid is ideal for rust.
How Do You Make Old Flagstone Look New?
To make old flagstone look new, clean your flagstone patio to remove dirt, stone dust, and other debris, and avoid harsh chemicals that could damage the stone. Once clean and dry, apply a high-quality sealant to enhance its natural colors. This routine maintenance can protect the flagstone from future stains and give it a renewed appearance.
Is it Okay to Pressure Wash Flagstone Surfaces?
It’s okay to use a pressure washer to clean flagstone surfaces. However, you will need to adjust the pressure to around 1000 to 1500 PSI to avoid damaging the stones.
What Damages a Clean Flagstone Patio?
Even a clean flagstone patio can be damaged by harsh weather conditions, mold growth, rock salt, freeze-thaw cycles, and heavy foot traffic. It’s also best to avoid harsh cleaners because they can weaken paver sealant. Additionally, neglecting to seal the stone may lead to premature deterioration.
Conclusion
Now that you know the best ways to clean a flagstone patio, you can keep your outdoor space looking brand new and extend the lifespan of your investment. Regular flagstone cleaning and maintenance keep your flagstone patio in tip-top shape. For complex restoration projects or professional-grade sealing, consider hiring experienced professional paver installers who have the expertise and equipment to deliver exceptional results.