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  • Writer's pictureAdam Rought

Can I Use WD40 on My Deck? Insights from Adam, our CEO

Updated: Jul 2


Deck maintenance questions are common among homeowners. One peculiar query that keeps surfacing is whether WD40 can be used on decking. While it might seem like an odd question, it's essential to address it thoroughly. Our CEO, Adam, provides expert guidance on this topic, emphasizing why WD40 is not recommended for deck use and offering practical solutions to common deck issues. Read on to learn how to keep your deck in top shape without relying on questionable methods.

Understanding Deck Squeaks

Deck squeaks can be a nuisance, but they can also indicate underlying structural issues. Before reaching for any lubricant, understand what causes these noises.

Identifying the Problem Areas

First, walk across your deck to pinpoint where the squeaks are coming from. Make a note of the specific boards or areas that produce noise. This step is crucial for targeted repairs.

Potential Causes of Squeaks

Squeaks usually arise from loose boards or fasteners. Over time, weather conditions and regular use can cause these elements to shift, leading to irritating sounds. Addressing these issues promptly can prevent further damage.

The Role of Maintenance

Regular maintenance can significantly reduce the likelihood of squeaks. Ensure that your deck is clean and inspect it periodically for any signs of wear or damage. Proactive care can save you from costly repairs down the line.

Why WD40 Isn't the Solution

While WD40 is a versatile product, it is not suitable for every application, especially when it comes to deck maintenance.

Chemical Composition Concerns

WD40 is primarily designed for metal surfaces. Its chemical composition can harm wood, particularly decking materials, by breaking down protective finishes and making the wood more susceptible to damage.

Safety Issues

Products stored in metal cans, like WD40, often contain chemicals that are not safe for exposure to outdoor environments. These substances can leach into the wood, posing health risks and potentially damaging the decking material.

Ineffectiveness for Wood

Even if WD40 could temporarily silence squeaks, it doesn't address the root cause of the problem. Using it might provide a short-term fix but can lead to more significant issues in the future.

Practical Steps to Fix Deck Squeaks

Instead of using WD40, consider these practical steps to address and prevent deck squeaks.

Step 1: Check Fasteners

Ensure all screws or clips securing the decking boards to the joists are tight. Loose fasteners can cause the boards to move, leading to squeaking noises. Tightening them can often resolve the issue.

Step 2: Replace Damaged Boards

If you find any boards that are damaged or warped, replace them promptly. Damaged boards can compromise the structural integrity of your deck and lead to further problems.

Step 3: Add Additional Fasteners

In some cases, adding extra screws or clips can help secure the boards better. Be cautious not to overdo it, as too many fasteners can weaken the wood.

Consult Manufacturer or Installer

If DIY solutions don't resolve the issue, it's wise to consult professionals.

Refer to Manufacturer's Guidelines

Always refer to the decking manufacturer’s guidelines for specific maintenance recommendations. These guidelines are tailored to your decking material and can offer valuable insights.

Contact the Installer

If your deck was professionally installed, reach out to the company that performed the work. They can provide expert advice and may offer maintenance services to address any issues.

Professional Inspection

Consider scheduling a professional inspection. Experts can identify problems that might not be visible to the untrained eye and recommend appropriate solutions.


While the idea of using WD40 on your deck might seem tempting, it's not a recommended solution. Proper maintenance, regular inspections, and addressing issues promptly are the keys to a long-lasting, beautiful deck. By following these guidelines and seeking professional advice when needed, homeowners can ensure their decks remain in excellent condition. Remember, your deck is an investment—take the necessary steps to protect it.

Have a squeaky deck? Contact us for a free deck design to discover how your deck can never sqeak again! We're here to help you maintain and enjoy your outdoor space for years to come.

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