Composite decking has become an increasingly popular choice among homeowners, thanks to its durability, low maintenance, and resistance to rotting, splintering, and insect damage. One common question that arises when it comes to composite decking is whether or not it can be pressure washed. In this article, we will dive into the topic and explore the dos and don’ts of pressure washing a composite deck.
Understanding Composite Decking
Before discussing pressure washing, it is essential to understand what composite decking is. Composite decking is made of a blend of wood fibers, recycled plastics, and binding agents. This combination creates a highly resilient material that mimics the appearance of real wood, while offering a longer lifespan and requiring less maintenance.
The Appeal of Pressure Washing
Pressure washing is known for its efficiency in cleaning various outdoor surfaces, such as driveways, walkways, and decks. It involves using a high-powered stream of water to remove dirt, grime, algae, and other stains. Many homeowners are drawn to pressure washing their decks as it provides a thorough clean, leaving the surface looking brand new.
The Dos of Pressure Washing a Composite Deck
If you want to pressure wash your composite deck, there are a few guidelines to follow to ensure optimal results and minimize any potential damage:
- Use the Right Equipment: Select a pressure washer with a maximum pressure of 1500 PSI (pounds per square inch) or lower. Higher pressures can cause damage to the composite material, leading to warping, splintering, or removing the protective coatings.
- Apply Proper Technique: Hold the pressure washer nozzle approximately 10-12 inches away from the surface of the deck. Use a sweeping motion along the length of the boards to avoid concentrated pressure in one area.
- Use Mild Detergents: Before pressure washing, apply a mild detergent specifically formulated for composite decking. This will help in removing stubborn stains, dirt, and mildew. Follow the manufacturer’s instructions for dilution and application.
- Test in an Inconspicuous Area: Before pressure washing the entire deck, test the equipment and detergent in a small, inconspicuous area. This will ensure that there are no adverse reactions or damage to the composite material.
The Don’ts of Pressure Washing a Composite Deck
While pressure washing can be an effective cleaning method, there are some things to avoid when it comes to composite decking:
- Using Excessive Pressure: As mentioned earlier, using high-pressure equipment can cause irreversible damage. Avoid using pressure washers with a pressure exceeding 1500 PSI.
- Using Hot Water: Hot water can soften the composite material and potentially affect its structural integrity. Stick to using cold water in pressure washing your composite deck.
- Holding the Nozzle Too Close: Holding the nozzle too close to the deck’s surface can lead to gouges, scratches, or even remove protective coatings. Maintain a safe distance of 10-12 inches.
- Overusing or Misusing Detergents: While using a mild detergent is recommended, excessive or improper use can leave a residue or cause discoloration. Follow the manufacturer’s instructions and rinse thoroughly after cleaning.
Alternative Cleaning Methods
If pressure washing is not recommended for your composite deck or if you prefer alternative cleaning methods, there are several options available:
- Scrubbing: Use a soft bristle brush or a scrubbing pad with a mixture of mild detergent and water. Scrub the deck surface in a gentle circular motion to remove dirt and stains.
- Oxygen Bleach: Oxygen bleach is an eco-friendly alternative to traditional bleach. Mix it with warm water according to the manufacturer’s instructions, then apply it to the deck’s surface and scrub gently.
- Power Washing without Pressure: Another option is to use a power washer without the high-pressure setting. This can still help rinse away dirt and debris without risking damage to the composite material.
Regular Maintenance is Key
Regardless of the cleaning method you choose, regular maintenance is crucial to keep your composite decking looking its best. Sweep away debris, remove stains promptly, and avoid placing heavy furniture or planters in one spot for an extended period. This will help prolong the life and aesthetic appeal of your composite deck.
Pressure washing can be done on a composite deck if proper precautions and techniques are followed. However, alternative cleaning methods are also effective and may be a better choice for those concerned about potential damage. Remember, regular maintenance is essential to keep your composite deck in top shape for years to come.