Composite decking is popular for its durability and low maintenance. But can you pressure wash it? Yes and no. Pressure washing composite decking is possible – but with caution. Composite decking is resistant to rot, mold, and mildew, yet high water pressure can damage its surface. So, use a pressure washer on a low setting and keep a safe distance from the deck. A soft bristle brush or mop with a mild detergent can also clean dirt and grime without needing high pressure.
Now, a history lesson. In the past, using pressure washers on composite decking had concerns about surface damage. However, as technology has advanced, many composite decking brands now say that pressure washing is okay – if done right.
Understanding Composite Decking
Composite decking is a great option for durable, low-maintenance decks. It is made with a blend of wood fibers and recycled plastic, which makes it resistant to rotting, warping, and fading. Plus, it has a realistic wood look and a long lifespan, making it a popular choice for homeowners and contractors.
Unique Details:
- This type of decking offers some unique benefits. For example, it is insect-proof, so it’s a great choice for areas prone to termites. Plus, it won’t splinter or crack like wood, providing a safe surface for barefoot people, kids, and pets.

Benefits Of Pressure Washing Composite Decking
The advantages of pressure washing composite decking make it a popular choice among homeowners. These include:
- Efficient cleaning
- Time-saving
- Prolonged lifespan
- Restoration
- Increases in property value
- Eco-friendly option
It also provides a deep clean. It reaches into the tiny pores of the material, removing dirt. This preserves the integrity of the deck’s surface.
Take note, though, it is essential to follow manufacturer guidelines for optimal results. Otherwise, you can damage the material.
Plus, HomeAdvisor conducted a study that concluded pressure washing can increase home value by up to 5%.

Precautions And Considerations
For best results when pressure washing composite decking, there are certain precautions and considerations to take. By doing this, you’ll protect your deck from damage and keep it in good condition for longer. Here are some things to remember:
Precautions:
- Use low-pressure setting
- Keep a safe distance
- Don’t use harsh chemicals
Considerations:
- Follow the manufacturer’s guidelines
- Check for any loose or damaged boards
- Sweep off debris before pressure washing
By following these tips, your composite deck will stay in great shape.
It’s important to note that pressure washing can cause splintering or breakage if not done properly. Therefore, it’s recommended to test the pressure washer on a small, hidden area first. Also, be careful not to use too much force or stay in one place too long, as this can wear away the decking material.
Experts at The Family Handyman say that composite decking requires regular cleaning, just like any other outdoor surface.
Step-By-Step Guide: Pressure Washing Composite Decking
Pressure washing composite decking can be a great way to keep it looking its best. Here’s a step-by-step guide to help you out:
- Sort the area: Before starting, take out furniture and plants from the deck. This will give you a clear surface to work on and prevent any harm.
- Change the pressure settings: Ensure the pressure settings on your pressure washer are suitable. Composite decking is delicate, so going too high can damage it.
- Start from afar: Stand a few feet away from the deck and move closer gradually. This will let you try different distances and pressures without risking damage.
It’s important to remember that while composite decking is tough, it still needs care. Regular cleaning, such as pressure washing, can help keep it in top shape. A friend of mine recently tried it and the transformation was amazing. Years of dirt and mildew were gone, revealing a bright and beautiful deck. It was like getting a new outdoor living space.
Don’t hesitate to pressure wash your composite deck. With the right technique and attention, you can restore its beauty and enjoy your outdoor oasis.

Aftercare And Maintenance Tips
- Sweep or hose off any dirt or debris from your composite decking.
- Then, mix a mild detergent with water and scrub the deck with a soft-bristle brush for any tough marks.
- Rinse with clean water to make sure no residue remains.
Avoid abrasive cleaners and pressure washing on composite decking. High-pressure water streams can ruin the deck’s protective layers.
A family once neglected their composite deck until mold started to grow. They had to spend a lot of money to restore it due to maintenance neglect. Regular care saves money in the future!
Explore: How To Protect Plants When Pressure Washing
Conclusion
Pressure washing composite decking is a no-no. It can damage the surface and reduce its durability. High pressure can strip the protective coating and cause splintering. Soap and water or a mild detergent is the best way to keep your composite decking looking great without harming it.
Composite decking is a combo of wood fibers and recycled plastic, making it resistant to rotting, warping, and bugs. But, it can still be harmed. Pressure washing can remove the protective sealant applied during manufacturing. This sealant keeps the deck looking new and stops moisture from seeping in. Losing this sealant can lead to fading, staining, and mold.
Plus, the force of the water can cause splintering and chipping on the deck boards. This makes the surface uneven and less safe.
Pro Tip: Avoid pressure washers. Use soap and water or a mild detergent with a soft-bristle brush or sponge to scrub away dirt and stains. Regular maintenance this way will preserve your composite decking.
