Pressure washing is excellent for cleaning many surfaces but can go wrong fast if not done right. Many homeowners fall into common mistakes that not only ruin the cleaning process but also damage surfaces. Whether you’re a seasoned DIYer or new to power washing, knowing the pitfalls and using the proper techniques can save you from considerable damages and extra expense. Here are the top 5 pressure washing mistakes to avoid so your cleaning ends up spotless and damage-free.
Using the Wrong Nozzle
- One of the biggest mistakes people make is using the wrong nozzle during the pressure washing process. The nozzle type determines the intensity and spread of the water stream. For example, a narrow nozzle creates a powerful, concentrated stream of water that is great for removing tough stains but can damage delicate surfaces like fibre cement siding, asphalt shingles or certain types of porous material. A wider nozzle or surface cleaner may reduce the risk of damage but may not be as effective on stubborn stains. To avoid these issues, always choose the right pressure washer nozzle tip and nozzle type for the surface you are cleaning.
- When choosing a nozzle consider the pressure levels the nozzle will produce. High pressure water spray is great for cleaning but can cause accidental damage if not used properly. Especially with gas powered pressure washers or powerful machines that can reach maximum power output. To be safe and efficient start with the lowest pressure setting and increase as needed. Keep a consistent distance between the spray head and the surface to avoid unwanted damage.
Applying Too Much Pressure
- Applying too much pressure is another common pressure-washing mistake that can cause significant problems, especially on delicate materials and surfaces. It may seem like using more pressure will get the job done faster, but it often backfires. High-pressure water can damage exterior surfaces and cause etching, cracking or stripping away of protective coatings. For example, using too much pressure on asphalt shingles can cause granule loss and reduce the life of your roof. Using too much force on a flat surface can cause streaks, burn marks or uneven cleaning results.
- To avoid these issues, always start with the lowest pressure setting and test it on a small, inconspicuous area before cleaning the entire surface. Adjust the pressure levels based on the cleaning needs and type of surface, remember less is more when it comes to delicate materials. Also, pay attention to the spray lance and spray gun settings, as incorrect adjustments can cause high-pressure cleaning that’s too intense for the surface. Proper techniques include using smooth overlapping strokes and maintaining a consistent distance from the surface to avoid concentrated water pressure that can cause damage.
Ignoring Safety Precautions
- Safety should always be first during any pressure washing project. High pressure water can be very dangerous if not handled properly so make sure to follow safety protocols. Personal safety starts with wearing the right safety gear, safety goggles, safety glasses and close toed shoes. These protect against debris, water spray and operator injury. Besides eye protection, consider wearing protective gear like gloves and long sleeves to protect your whole body from high pressure water and chemical cleaners.
- Another safety consideration is being aware of your surroundings. Never aim the pressure washer at people, pets or fragile surfaces as this can cause serious injury or property damage. Don’t use a narrow stream or 0 degree pinpoint sprays as these concentrated streams of water can damage the surface or puncture skin. Always follow the safety instructions of the pressure washer manufacturer and be aware of unstable surfaces or areas where the water stream can cause accidents.
- If you’re using gas powered pressure washers make sure to have good ventilation to avoid carbon monoxide buildup especially when working in enclosed spaces. Regular maintenance of the pressure washing equipment is also important to ensure it runs safely and effectively. By following these safety precautions you can minimize the risk of injury and have a successful cleaning process.
Not Preparing the Surface Properly
- The cleaning process is only as good as the preparation that goes into it. Skipping surface preparation is a common mistake that can result to poor cleaning and damage. Before you start the pressure washing process make sure to remove any loose material such as debris, leaves or dirt from the exterior surface. This step prevents these materials from being blasted into the surface during cleaning which can cause scratches or other damage.
- If you have stubborn stains, pre-treat them with the right chemical cleaner to make the pressure-washing process more effective. Chemical cleaners break down tough stains, so the pressure washer can remove them easily without needing excessive pressure. But make sure to choose the right chemicals for the surface you’re cleaning, as some may be too harsh for delicate surfaces or can damage plants and landscaping.
- And don’t forget to protect areas that are not meant to be pressure washed. Cover plants, outdoor furniture, and windows with plastic sheeting or tarps to prevent them from being damaged by the high-pressure water stream. Outdoor pressure cleaning is effective, but taking the time to prepare the surface and surrounding area ensures that the whole surface is cleaned effectively and without causing unnecessary damage.
Washing Too Close to the Surface
- Another mistake when pressure washing is holding the spray head too close to the surface. This can cause streaks, burn marks and actual damage to the surface material. Whether you’re using an electric pressure washer or a gas pressure washer, keep a consistent distance from the surface. Generally 12-18 inches is the recommended distance to get the best results without damage.
- Washing too close can also create uneven cleaning patterns, especially on larger, flat surfaces like driveways or patios. By keeping a distance, you allow the water stream to spread evenly across the surface and get a uniform clean. If you’re dealing with dirty surfaces or tough stains, consider using a wider nozzle or adjusting the pressure instead of moving closer to the surface. This will protect the surface and still give you the cleaning power to remove grime and buildup.
- For those new to DIY pressure washing, it’s easy to think that moving the spray head closer will improve the cleaning process. But this can cause damage and costly repairs. Instead, focus on proper technique and distance to get a thorough and safe cleaning.
Conclusion
Pressure washing is a great way to clean and maintain the exterior of your home but avoid these common mistakes that can cause damage and injury. By using the right nozzle, right pressure, following safety precautions, preparing the surface and keeping a distance you’ll get a clean damage free finish every time. Whether you’re a DIYer or considering hiring Pressure Washing Professionals, know these standard pressure washing mistakes to get the best results and protect your property and yourself.
FAQ
What are the risks of too much pressure on delicate surfaces?
Too much pressure can etch, crack or strip protective coatings off delicate surfaces. Start with the lowest pressure setting and increase as needed. Vinyl siding and asphalt shingle roofs need lower pressure to avoid damage.
How often should I pressure wash my exterior?
Frequency of pressure washing depends on the surface and environment. Regular maintenance like annual pressure washing will prevent algae growth and keep your exterior looking fresh. Some surfaces like driveways and patios may need more frequent cleaning especially in high traffic areas.
Is hot water required?
Hot water can be good for tough stains or grease buildup but not always necessary. Cold water pressure washers are good for most residential exteriors, hot water may be needed for specialized cleaning like oil stains or heavily soiled surfaces.
What safety gear should I wear?
Wearing safety gear is a must to protect yourself from high pressure water and potential hazards. Safety goggles, safety glasses, close-toed shoes and protective clothing are recommended. Never compromise personal safety during pressure washing as high pressure water can cause serious injuries.
Should I do it myself or hire pressure-washing professionals?
DIY pressure washing is an option if you have the equipment and knowledge. However, hiring professionals with specialized equipment ensures the job is done safely and effectively and minimizes property damage. Professionals know the correct technique and can handle delicate surfaces without damaging them.
