What Not to Do When Pressure Washing Siding?

Power washing siding is a quick, easy way to improve curb appeal and likely extend the life of your siding. But it could also mean a whole lot of damage if it’s not done the right way—unwanted repair bills and headaches. JD Power Washing knows the ins and outs of siding power washing, namely how to clean vinyl siding, and it is through this blog that one can lay out the vital mistakes one should avoid to keep their home beautiful and undamaged.

Understanding the Risks of Incorrect Pressure Washing

Potential Damage from High Pressure

Using too high of a pressure setting is perhaps one of the most common and highly damaging mistakes when power washing a siding. The pressure applied should be apt, as too much water at very high pressure can even dent and crack apart vinyl siding. Proper pressure settings should be chosen based on the material from which the siding is made.

Water Damage from Improper Technique

Inappropriate washing techniques, such as water driven from the bottom up or at the wrong angle, will drive water behind the siding. That trapped moisture can lead to mold, mildew, and rot, which can undermine the structural strength of your home.

Key Mistakes to Avoid in Siding Power Washing

Neglecting to Pre-Wet the Siding

Before applying any cleaning solution, it’s important to pre-wet the siding with water. This prevents the cleaning solution from drying out too quickly, which can cause streaks or stains on the siding.

Using the Wrong Cleaning Solutions

Not all cleaning solutions are suitable for every type of siding. Using harsh chemicals on vinyl siding, for instance, can lead to discoloration and weakening of the material. Always opt for cleaners specifically formulated for the type of siding on your home, and avoid harsh chemicals like bleach unless diluted and used appropriately.

Ignoring Manufacturer’s Guidelines

Most siding materials come with specific cleaning instructions from the manufacturer. Ignoring these guidelines can not only cause damage but also void warranties. It is crucial to consult these instructions before starting any power washing project.

Forgetting to Close Windows and Doors

Failing to secure windows and doors during the washing process can allow water and cleaning chemicals to enter your home. This can cause water damage to interiors and furnishings and potentially harmful exposure to cleaning chemicals.

Overlooking Protective Gear

Safety should always be a priority when undertaking power washing. The high pressure of the water can cause injuries if skin contact occurs. Moreover, protective eyewear and clothing can prevent harm from accidental splashes of cleaning solutions.

Best Practices for Safe and Effective Siding Power Washing

Test the Pressure Setting

Before starting the cleaning process, always test the water pressure on a less noticeable part of the siding. This helps ensure that the setting isn’t too high and gives you a chance to adjust technique and distance without causing widespread damage.

Use a Controlled Spray Pattern

Maintain a steady, controlled spray pattern and keep the nozzle moving. Do not concentrate the spray in one area for too long as this can erode the material, especially with softer siding materials like vinyl.

Maintain an Appropriate Distance

Holding the nozzle too close to the siding can concentrate the water pressure excessively, risking damage. A good rule of thumb is to start with the nozzle about two feet from the surface and adjust as necessary based on the siding’s response.

Rinse Thoroughly

After applying and allowing the cleaning solution to sit for the recommended time, it’s essential to rinse the siding thoroughly. This prevents any chemical buildup that could degrade the siding material over time.


Pressure washing your siding can greatly improve the look and longevity of your home’s exterior. However, it’s vital to avoid the common pitfalls that can lead to damage. By following the guidelines outlined in this blog, you can ensure that your siding is not only clean but also remains in good condition. At JD Power Washing, we specialize in providing professional and damage-free siding power washing services, tailored to meet the needs of different siding materials, especially vinyl siding.

Visit JD Power Washing for more information on our services and to schedule a professional consultation. Ensure your home’s siding is cleaned safely and effectively, preserving its beauty and integrity for years to come.


Only enough pressure should be used, as too much may lead to damaging the siding materials, like vinyl. Never use the wrong cleaning solutions; they will only discolor or weaken your siding. Do not forget to close the windows and doors to avoid waterlogging inside the house when washing.

Use cleaners that are designed for your type of siding. Material from harsh chemicals can be harsh to the siding materials, especially vinyl. Consider mild, eco-friendly solutions recommended for power washing sidings.

Make sure to always direct water at a downward angle and keep the distance uniform with the siding to prevent water from driving behind the panels, which could be the cause of moisture-related issues.

Always wear protective eyewear, gloves, and clothes to offer protection from high-pressure water and chemical splashes, which may cause injuries. Always observe safe power washing procedures.

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