Pressure washing can effectively clean outdoor surfaces, however, it’s not a one-size-fits-all solution. Using high-pressure water on the wrong materials can cause serious damage. Whether you’re a homeowner or a property manager, it’s important to know what surfaces can handle a pressure wash — and which ones need gentler cleaning methods. 

Surfaces That Can Be Pressure Washed

Concrete and Asphalt Driveways 

Concrete and asphalt surfaces are durable and can withstand high-pressure cleaning. You’ll be able to effectively remove oil stains, mildew and mold, grime, and embedded dirt, making driveways look new again. It can also help prepare these surfaces for painting, sealing, or staining. 

Brick and Stone Patios

You can safely pressure wash unsealed brick and natural stone to remove grime and moss. However, be cautious with mortar joints, especially if they’re old or crumbling; you may need to use lower pressure, around 1000 to 15000 PSI.

Vinyl Siding

When pressure washing vinyl siding, use moderate pressure, a wide spray nozzle, and keep the wand at a safe distance to avoid cracking or forcing water behind the siding panels. You may want to test the pressure and nozzle on a hidden spot to ensure no damage occurs.

Wood Decks and Fences

You can pressure wash wood as long as you exercise caution so as not to splinter it, create new scratches, or cause it to become fuzzy. Use lower pressure and a wide nozzle to avoid splintering or etching the surface. Softwood, in particular, is prone to damage. 

Outdoor Furniture (Plastic and Metal)

Plastic chairs and metal patio sets can handle pressure washing, especially when removing built-up grime and bird droppings. Use low or moderate pressure and a fan spray, which helps spread the water stream, reducing the risk of damage. 

Garages and Workshop Floors

Garage and workshop floors often accumulate oil, paint, and dirt. You can use pressure washing to deep-clean garage floors, especially when combined with a degreasing agent. Be mindful of drywall, particularly if it’s not sealed. If you’re worried, cover it with a tarp or sheet. 

Surfaces That Should Not Be Pressure Washed

Roof Shingles (Especially Asphalt)

Pressure washing can loosen shingles, remove granules, damage the roof itself, and lead to leaks. If you need to clean your roof, use soft washing methods with a mild detergent. This will effectively remove dirt, moss, and mildew without damaging roofing material. 

Old or Weathered Wood

Older wood may be too soft and brittle to handle any level of pressure washing without damage. Hand cleaning or soft washing is safer and more effective.

Windows and Glass Panels

High-pressure water can shatter glass or damage seals, especially if the windows are older or delicate. Use a soft brush or squeegee with a glass-safe cleaner for a streak-free finish. 

Electrical Panels and Outdoor Fixtures

Never mix water with electricity. Keep pressure washers away from meters, panels, electrical outlets, and outdoor lighting to prevent electrical hazards and fire risk. If you want to clean around electrical fixtures, consider hiring a professional. 

Painted Surfaces (Unless You’re Removing Paint)

Keep your pressure washer away from painted surfaces, unless you’re trying to strip the paint. High-pressure water can cause peeling, chipping, or an uneven finish on painted surfaces.

Vehicles (Without Proper Settings)

While some car washes do use pressure, a home pressure washer might be too powerful and damage your car’s paint or trim. If you want to use your pressure washer to clean your car, use the proper low-pressure nozzles. 

Pressure Washing Tips 

Here are a few tips if it’s your first time using a pressure washer:

Prep the Area Properly — Clear the area you are going to pressure wash of any debris, protect plants with tarps, and cover fixtures and electrical outlets. 

Use Detergent Wisely — Dilute detergent according to the manufacturer’s instructions and avoid excessive foaming, which can damage the pump. 

Understand Nozzles — Use the proper nozzle, as every nozzle produces different spray patterns and pressures. A wider spray will be more gentle, while a narrower spray will be more powerful. 

Keep a Good Distance — Start with a distance of one to two feet from the surface and gradually move closer as needed, and if the material can handle it. 

Use Your Pressure Washer Wisely 

Pressure washing can effectively clean and refresh a variety of surfaces, but it’s not suitable for everything. Using the wrong pressure or technique on delicate materials can lead to costly damage. By understanding which surfaces can handle a pressure wash and which ones can’t, you’ll get better results and protect your property. When in doubt, start with a lower pressure setting or call in the professionals to ensure a safe and effective clean. 

Many people choose pavers for their driveways, patios, walkways, and pool decks due to their durability, aesthetic appeal, and versatility. However, without proper maintenance, even high-quality pavers can become stained, faded, or damaged over time. If you want to effectively protect and preserve your investment, consider sealing your pavers. 

What are Pavers?

Pavers, also known as paving stones, are made of natural stone, brick, concrete, or other materials. These individual stones are laid together in a pattern on top of a foundation of compacted sand to create a durable and attractive outdoor surface. Pavers are commonly used for patios, walkways, driveways, and pool decks, but they can be used for any outdoor surface.

What is Paver Sealing?

Paver sealing involves applying a protective sealant to the surface of the pavers. This creates a barrier against the elements and prevents water, oil, dirt, and other contaminates from wearing away the surface. It also helps preserve the color and stabilize the joint sand, reducing weed growth and insect infestation. 

Benefits of Paver Sealing 

Protection Against Stains and Spills

The porous nature of unsealed pavers allows them to absorb oil, grease, and other stains easily. A high-quality sealant creates a protective layer, making spills easier to clean and reducing the risk of permanent staining and damage. 

Enhanced Appearance

Sealing enhances the beautiful natural colors and textures of the pavers, giving them a vibrant and appealing look that makes your outdoor space appear fresh and well-maintained, boosting your curb appeal and property value.

Weed and Moss Prevention

Sealed joints keep dirt out and prevent the growth of weeds, moss, and grass, helping maintain a cleaner and more polished look without constant care and attention. 

UV Protection

Constant sun exposure can cause pavers to fade and lose their original color. A UV-resistant sealant protects against sun damage and keeps your pavers looking bright and new for longer. 

Weather Resistance

Rain, snow, and freeze-thaw cycles can erode the surface and joint sand of unsealed pavers, Sealing provides a waterproof layer that shields your pavers from harsh weather conditions. 

Efflorescence Prevention

Sealing pavers helps prevent efflorescence, the white, powdery mineral substance that can sometimes appear on the surface of pavers, dulling the colors and making them look unappealing.

Insect Prevention 

Ants love to build mounds in the empty spaces between pavers. A sealant deters them, keeping your pavers safe from damage A sealant will also prevent other insect or crittle debris and damage. 

Enhanced Traction

Sealed surfaces can be safer in wet conditions as they provide better traction and reduce the risk of slipping, which is particularly important in areas with snow and ice.

Easier Maintenance

Sealed pavers are easier to clean and require less frequent deep cleaning. Dirt and debris are less likely to cling to the smooth, sealed surface. Less cleaning also means reduced maintenance costs, putting more money in your pocket. 

When Should You Seal Your Pavers?

Ideally, pavers should be sealed 60 to 90 days after installation to allow for proper settling and cleaning. Avoid sealing your pavers during really hot or cold days, as this could affect the sealer’s performance. Aim for 50 to 90 degrees and avoid days when it’s likely to rain. 

Pavers should be resealed every three to five years, depending on the amount of traffic they experience, exposure to the elements, and the type of sealant used. You should reseal your pavers if they show signs of dullness, staining, moss growth, or sand loss. 

Choosing the Right Sealant

Not all sealants are the same. The kind of sealant you should get depends on your paver type, desired finish, and specific environmental conditions. You can choose from: 

Solvent-Based Sealers — These offer a high-gloss finish and bring out color vibrancy. However, they may have strong odors and VOCs.
Water-Based Sealers — These are environmentally friendly, lower odor, and great for residential use. They come in various finishes and provide solid protection.
Film-Forming Sealers — Film-forming sealers create a visible layer over the surface, enhancing gloss and offering strong protection.
Penetrating Sealers — These sealers absorb into the paver without altering the surface appearance, ideal for those wanting a natural matte look. 

If you aren’t sure which sealant to use, consider consulting a professional to ensure the best results and long-lasting protection. 

Should You Seal Your Pavers? 

Paver sealing not only enhances the beauty of your outdoor surfaces but also protects them from damage and deterioration. Whether you want to boost curb appeal, increase property value, or simply make maintenance easier, you won’t regret investing in paver sealing.

Pressure washing can effectively clean surfaces, remove built-up dirt and grime, and restore your home’s exterior. However, improper use can lead to damage, wasted resources, and even safety hazards. If you are a pressure-washing novice, here is a comprehensive guide to safe pressure washing. 

Best Practices for Effective Cleaning

Use the Right Pressure Settings

Some surfaces are sturdy, and some are delicate, so make sure you are using the right pressure settings to avoid accidental damage. Low-pressure settings work best for wood and siding, while higher pressure works well for concrete.

Wear Protective Gear

Always wear safety goggles, gloves, and sturdy, closed-toed shoes to protect yourself from debris and high-pressure water.  You may not feel the need to be careful, but you never know when a small rock will bounce up and hit you in the eye. 

Test on a Small Area First

Before pressure washing an entire surface, test a small, inconspicuous area to ensure the pressure and detergent are appropriate and won’t damage the surface you are cleaning. This is also a good time to practice and get used to the pressure washer.  

Use the Right Cleaning Solutions

Certain surfaces may require specialized cleaning solutions to effectively remove stains and mildew. Make sure the detergent you have is safe for the surface and the environment. Your power washer’s instruction manual should include a list of recommended cleaners based on different surfaces. 

Maintain a Safe Distance

Keep at least a 10-foot distance between you and the surface you are cleaning. Holding the nozzle too close can damage surfaces. If you feel you aren’t close enough to remove the grime you are targeting, you most likely need to adjust the pressure, not get closer. 

Use Proper Technique

Start with the lowest pressure setting and the widest spray angle, gradually increasing it to the ideal amount. Use consistent, up-and-down, sweeping motions to avoid uneven streaks or damage to the surface.

Follow Manufacturer Guidelines

Always refer to your pressure washer’s manual as it contains important information regarding how you pressure washer works, how to safely operate it, and what not to do. It will contain details about your specific washer as each one is a bit different. 

Hire a Professional 

If you are nervous about pressure washing, have a large area that needs cleaning, or don’t know how to start, consider hiring a professional. They will know the correct cleaners, techniques, and pressure to use to effectively clean your home or business without damaging it. 

Pressure Washing Precautions

Avoid Excessive Pressure

Using too much pressure can lead to accidental damage to your home or business. Heavy force can strip paint, damage wood, and crack siding. Make sure you always adjust pressure settings based on the material being cleaned and remember to not underestimate the strength of your power washer. 

Be Careful Around Windows or Electrical Components

Avoid directing high-pressure water at windows, electrical panels, or outlets, as it can cause damage and potential safety risks. You should be extra careful around anything electrical as a short circuit could lead to a fire. Unnecessary damage can also lead to costly repairs. 

Stay Off Ladders

The force of the pressure washer can cause instability, making ladder use dangerous. Instead, use extension wands for high areas to avoid the risk of injury or even death. 

Avoid Hot Water

Certain materials, such as wood and vinyl, can warp or become damaged when exposed to high-temperature water. Make sure you use the right temperature of water for the material you are cleaning; most can be cleaned using cold water. 

Ensure Proper Drainage

After pressure washing, ensure proper drainage and avoid leaving standing water to prevent mold, mildew, and water damage.

Avoid Aiming at People or Pets

Don’t point the jet of water at any person, animal, or part of your body. The pressure from the jet can be powerful enough to rip your skin off and injure those around you. 

Cover Plants and Outdoor Furniture

Prepare your property for pressure washing by covering nearby plants, outdoor furniture, and delicate decorations from harsh chemicals and high-pressure water.

Be Smart When Using a Pressure Washer

 Pressure washing can help you easily and effectively clean the exterior of your home or business. But if not used correctly, it could lead to costly damage and even injuries. Make sure to follow this guide to safely achieve a clean, polished look that will be the envy of the neighborhood.