Yes, you can pressure wash your pavers. But while using a pressure washer at a basic level is simple, ignorant and inexperienced users can easily damage their pavers by using a stream that's too powerful, by holding the wand too close to the pavers, or by falling into any number of other rookie mistakes.
Concrete is porous which is why your pavers come standard with a sealant built-in. This sealant is waterproof and provides protection from staining. High powered pressure washers have multiple thousands of PSI (pounds per square inch) so if your setting is too high you will strip away the sealant.
If you're going the DIY route, all you need to do is grab a large bucket and combine warm water with a mild degreasing dish detergent. Stir the solution well, then evenly distribute the solution over the pavers. Do not use acid-based cleaners as this can damage the seal.
Power Washing
You can power wash your patio by just using the wand-lance however you should take care to maintain a distance of at least 500mm from the surface of the stone – any closer and you risk permanently damaging or etching your paving material.
When pressure washing pavers, bricks, or concrete, these mistakes can cause visible damage, such as pitting, lines, or general surface degradation. Another common issue from improper power washing is damaging the mortar between bricks or dispersing the joint sand between pavers.
If the pavers are wet due to a pressure wash, allow them at least 24 hours to air dry. They may need a reseal after a deep clean, which is crucial to wash away residue. Excessive moisture from intense heat can also hinder the sealing process.
1000 to 1500 psi pressure is easy to mange and will not cause damage to pavers and paving stone. A low pressure washer is also safe for mortared flagstone and slate patios and walls.
A strong enough power washer will blast most types of sealer off of concrete with ease. The trick is to make sure to pressure wash the entire surface area. For more sturdy sealers, it may take a few passes with the pressure washer to get it completely removed.
If you want to clean your concrete, there are a few things to keep in mind. You should use a pressure washer or other high-pressure water source to remove stains such as oil and grease. When using a pressure washer, be careful not to damage the sealer on your driveway by putting too much pressure on it.
Pavers and joints should be resealed every 3-5 years.
The pressure washer in combination with a dirt cutter is an excellent option. This removes not only weeds and moss from the surface, but also from indentations. Keeping up with this type of cleaning means that there is less time for weeds to grow. It also helps to maintain the beauty of the paving stones' surface.
Pressure Washing: Start by having the whole area pressure washed before sealing pavers. Grime and dirt can inhibit the paver sealant from penetrating. As a result, the paver stones may start pitting, and discoloration can happen. You are also likely to seal dirt beneath the coating.
You need 48 hours of dry weather after your sealer has been applied to cure it. (Remember to turn off your automatic water sprinklers.) If the sealer is not cured correctly, water can cause white marks or stains on your pavers and can even be trapped beneath the layer of sealer.
If you experience any dew, accidental sprinkling of water or rain as the sealant dries, the sealant can become stained, cloudy, blotchy, or discolored and it will no longer be aesthetically pleasing. Simply don't seal your paver if there is even a remote chance of rain, fog, or a drizzle.
Ultimately, you can expect to enjoy between three and five years of protection from a high-quality sealer. With that said, a big part of answering the question, “How long does paver sealer last?” will depend on environmental factors such as weather and foot traffic.
Dish soap and water: Dish soap is a degreaser, and it works well to clean oily and grimy concrete. Create a cleaning solution of warm water and few drops of dish soap and apply it to the surface. Let it sit for a while, then mop the patio and rinse it with fresh water. Repeat the process as many times as needed.
For some reason, this idea that vinegar will remove concrete sealer has become one of the more pervasive myths about concrete, and it is just that: a myth. That's because almost all concrete sealants are made to be resistant to acid, which vinegar is. As if that wasn't enough, vinegar can actually damage concrete.
Start by removing any visible peeling and flaking and use a solvent based stripper such as Xylene to remove the previous sealer. (If concrete was dyed or stained, using Xylene can damage or change the color of the concrete.) Pressure wash the surface and allow concrete to completely dry.
Use a pressure washer to remove the product from the entire surface working from the top of the slope to the bottom. Use water and a nylon brush to scrub any remaining residue from the surface of the pavement and rinse the entire project with water once complete with a low level on your pressure washer.
How Much Does It Cost to Clean and Reseal Pavers per Square Foot? In total, you should expect to pay around $2 per square foot to clean and seal pavers. The price may vary between $1 and $3 per square foot, depending on the sealant and method of cleaning.
Polymeric sand works best when used at full depth. A pressure washer works well or you can get down on your hands and knees and use some sort of tool that will dislodge the sand.
For the average homeowner who wants to wash their car, clear dirt off the siding of their house and dig out all the gunk in between 30-year-old pavers, the Sun Joe SPX 3000 XT1 is the best pressure washer for the job.