Since the beginning of the 20th century, flagstone, a sedimentary rock, has been used for paving, often as an extension of the wall or walkway. They are well-known for elevating the aesthetic of any landscaping project.
But their specific characteristics also come with some special maintenance requirements. So the question arises: is it safe to power wash Flagstone patios?
Using a power washer to clean your flagstone can cause heavy damage. Power washing can damage flagstone by removing sealers. A flagstone’s sealer is responsible for creating a barrier between your stone and the elements.
If this barrier is broken, your stone will be exposed to harsh conditions such as driving rain, sun damage, oxidation, and even rotting.
A power washer can be convenient for cleaning up after a party or simply getting your backyard back in shape.
However, if you’re not careful when using one to clean your flagstone patio, you can end up causing serious damage to the stones.
Does Flagstone Damage From Power Washing?
The answer is yes. Flagstone is a porous stone that can easily be damaged by powerful cleaning machines like power washers or even household hoses when the water pressure is too high for them to handle.
Pressure washers with a high-pressure setting can shoot water up to a distance of 60 feet, and stones like flagstone are not strong enough to withstand this kind of abuse.
The stone starts its deterioration by developing cracks that extend from the surface inward. Over time, these cracks get bigger and deeper, causing the flagstone surface to become rough.
This is especially noticeable in areas exposed to heavy foot traffic or if the stone is installed on a slope.
Potential Dangers From Power Washing Flagstone
A lot of people think the benefits of power washing a flagstone patio or driveway are worth the risk. They just can’t bring themselves to make that final investment, so they keep dreaming about replacing their flagstone patio later on.
They’re not alone in this department. The issue with power washing is that it’s a very damaging process, and unfortunately, most people don’t realize this until it’s too late.
It can even ruin your flagstone, making it impossible to repair.
So why is this such a big deal? Well, for one thing, there’s an important difference between removing dirt and solidifying the stone.
Yes, you want to remove buildup from your Flagstone now and then. But you also want to keep it in good condition when doing so.
However, if you use power washing to clean your flagstone, you will remove layers of the stone in the process. This can be very damaging to flagstone.
Despite this, some people believe that power washing is worthwhile.
Common Problems With Power Washing
Here are some of the more common problems you can expect to encounter from power washing:
Rusting
There is a chance that it will eventually rust your flagstone patio or driveway. It doesn’t take much to do this, so if you’re going to do this, you should at least invest in a product designed not to rust.
Otherwise, it’ll just accelerate the process. Luckily, there are ways to remove rust from the flagstone patio.
Cracking
As a byproduct of power washing, you can seriously crack your Flagstone. This is especially true if you are using a product that has any acids in it.
This will cause it to crack under stress or pressure.
Discoloration
Your Flagstone could discolor after power washing your patio or driveway for years. Eventually, this might begin to look like mildew or even mold.
You may have to pay money to get rid of this damage once it starts showing up.
Air Porosity
Once again, this is caused by stripping away layers of stone with power washing techniques. Over time, this leads to fractures and major problems that will be difficult to repair if you haven’t already taken action in advance.
Flagstone is very expensive today. This can cost you a lot of money if you haven’t made the right preparations.
Power washing can also cause fractured or chipped pieces of stone to become dislodged, which is even more expensive to fix.
How To Avoid Damages From Power Washing?
Power washing is a chore that is often difficult to avoid. When it becomes necessary to clean your flagstone, you have a few things to keep in mind to minimize the possible damage.
Follow these tips, and you’ll be able to enjoy your beautiful flagstone for years to come.
Solution Of Water And Dishwashing Detergent
Clean the stone with a solution of water and dishwashing detergent before power washing. The detergent will help break down any oils that have built up.
You may also mix a few drops of vinegar into the water for added cleaning power.
Avoid Windy And Rainy Days
Avoid power washing your flagstone on windy days and in the rain. A strong wind will cause you to scrub your mortar too hard, which will probably damage the stone.
Rain can wash away the sealer that you used to coat the stone, which could result in damage if the water gets behind the sealing material.
Make It A Morning Work
Power wash your stone in the morning if it is possible. You won’t have to worry about washing too vigorously because the fluid levels in your stone will be low at this time.
Besides, most people are at home in the morning, so if you start to feel overwhelmed, you can ask for help.
Use Rubber Gloves
Wear rubber gloves whenever you handle your flagstone after it has been power washed. Any oil that gets on the stone may take root and cause damage if left alone.
Cleaner Precaution
Don’t spray any cleaner on your flagstone while it is wet. If you do, it will leave a residue that will cause discoloration in the very long run.
Don’t use any type of silicone-based cleaner either. This can damage your stone forever.
However, plenty of ways to maintain flagstone don’t involve power washing. It might take more work in the long run, but at least it won’t cause serious damage to your flagstone over time.
How Long Does Patio Excavation Take and How Does it Impact the Cost and Time Needed?
The patio excavation time and cost required can vary depending on multiple factors. The size and complexity of the patio, the condition of the ground, and the equipment used all contribute to this process. On average, patio excavation can take anywhere from a few days to a couple of weeks. The more extensive the excavation, the higher the cost and time needed, considering factors like labor, equipment rental, and disposal of excavated materials. It is essential to consult with professionals to accurately assess the patio excavation time and cost for your specific project.
How To Wash Flagstone Without Power Washing?
Transparent flagstones can be cleaned using many different methods: hydrogen peroxide, dishwashing detergent, vinegar, and diluted bleach.
To clean the stained flagstone, you will need a bucket filled with water, hydrogen peroxide, dishwashing detergent, and 2 or 3 buckets of water in case of spilled bleach.
You will also need a squeegee and a scrubbing brush.
Add a bucket of water to the stained flagstone for rinsing. Add a bucket of hydrogen peroxide to the stained flagstone and let it stand for 15 minutes.
Make sure that you keep the stone wet during this time. Rinse with plain water when done. If the flagstone is still stained, follow with a bucket of dishwashing detergent and scrub until the stain is gone.
Rinse the area again with clean water. If you have a stone that remains stained or discolored after these steps, repeat- this process can be repeated multiple times if needed.
What are the potential damages to using a power washer on flagstone and pavers?
Using a power washer on flagstone and pavers can cause inexperienced power washing damage to pavers. The high pressure of the water can strip away the top layer of the stone, leading to erosion, chipping, and discoloration. It’s crucial to use the right techniques and equipment to avoid such potential damages.
Final Thoughts on Power Washing a Flagstone Patio
Flagstone is a natural stone; therefore, it can be difficult to clean. Power washing can help remove dirt and stains but is it safe to power wash Flagstone patio? To sum it all up, power washing can damage the surface of your stones.
However, with a lot of attention and good care, your flagstone patio should last a long time.
