Trex decking is a popular choice for outdoor living spaces due to its durability, low maintenance, and attractive appearance. While Trex decking is designed to withstand the elements, it’s essential to clean and maintain it properly to preserve its beauty and longevity. One common question homeowners have is whether they can use a pressure washer to clean their Trex deck. The answer is yes, but it’s crucial to follow specific guidelines to avoid damaging the deck’s surface.
Safety Precautions
Pressure Setting
When using a pressure washer on Trex decking, it’s essential to operate at a low-pressure setting, generally below 1500 PSI. Higher pressure can cause severe damage to the deck’s surface, leading to splintering and cracking of the boards. It’s recommended to use a pressure washer with a fan tip, which provides a wider, gentler spray pattern that is less likely to cause surface damage.
Distance
The distance between the pressure washer nozzle and the deck surface is also crucial. Maintain a distance of at least 8-10 inches from the deck to avoid direct, high-pressure contact that can etch or gouge the surface. Holding the nozzle too close can result in irreparable damage to the Trex boards.
Sweeping Motion
When pressure washing, move the nozzle in a sweeping motion, following the direction of the deck boards’ grain. Avoid focusing the spray on one area for too long, as this can lead to localized damage. Maintain a consistent, even pace to ensure the entire deck surface is cleaned effectively without causing any harm.
Pre-Soaking
Before using the pressure washer, consider pre-soaking the deck with a composite deck cleaner or a mild detergent mixture. This will help loosen up any stuck-on dirt, grime, or stains, making the pressure washing process more effective and reducing the need for excessive pressure.
Test in an Inconspicuous Area
Before starting the pressure washing process, it’s essential to test the equipment on a small, inconspicuous area of the deck. This will help you ensure that the pressure setting and distance are appropriate and won’t cause any damage or etching to the Trex surface.
Recommended Techniques
Use a Fan Tip
When pressure washing Trex decking, choose a fan tip with a 40-60 degree spray pattern. This type of tip is suitable for both wood and composite decks, providing a wide, gentle spray that can effectively clean the surface without causing damage.
Pre-Cleaning
Before pressure washing, take the time to sweep away any loose debris or use a blower to remove any loose particles from the deck surface. This will help ensure that the pressure washing process is as effective as possible, without pushing dirt and debris deeper into the deck’s grooves.
Soap Dispenser
Utilize a soap dispenser attachment on your pressure washer to apply a mild detergent or composite deck cleaner to the deck surface before pressure washing. This will help break down any stubborn dirt or stains, making the cleaning process more efficient.
Important Notes
Avoid Harsh Chemicals
When cleaning Trex decking, it’s crucial to avoid using harsh chemicals, such as bleaches or acids. These can lead to discoloration and damage the deck’s surface over time. Stick to mild, pH-neutral cleaners specifically formulated for composite decking materials.
Warranty Considerations
Damage caused by improper pressure washing techniques, such as using excessive pressure or holding the nozzle too close to the deck, is generally not covered by the Trex warranty. Be cautious to follow the manufacturer’s guidelines to avoid voiding your warranty.
Additional Tips
Regular Cleaning
To maintain the appearance and longevity of your Trex deck, it’s recommended to clean it semi-annually, typically in the spring and fall. This will help prevent the buildup of grime, dirt, and other environmental factors that can detract from the deck’s aesthetic.
Addressing Grime Buildup
For stubborn grime or stains, a more detailed cleaning approach may be necessary. Start by pre-soaking the affected areas, then use a soft-bristled brush and a mild detergent solution to gently scrub the surface. Avoid using abrasive tools or harsh chemicals, as these can damage the Trex material.
Removing Oil and Grease Stains
If you encounter oil or grease spills on your Trex deck, it’s essential to clean the affected area immediately. Use a soapy water solution to address the stain, as this will help prevent it from setting in and becoming a more challenging problem to resolve.
By following these guidelines and techniques, you can safely and effectively pressure wash your Trex decking, maintaining its beauty and durability for years to come.