Taking care of your deck might seem easy, but there are some common mistakes that people make that can lead to big problems. Whether it’s forgetting regular maintenance or using the wrong cleaning products, these slip-ups can reduce your deck’s lifespan.
Let’s go over eight of the most common deck maintenance mistakes and how you can avoid them to keep your deck looking great and standing strong.

1. Skipping Regular Cleaning
Your deck is exposed to dirt, debris, and the elements every day. Ignoring regular cleaning can cause grime to build up, leading to stains, mold, and even rot. A simple cleaning routine using a garden hose or mild soap can make a big difference. Sweep away leaves and debris weekly and rinse your deck to prevent buildup.
2. Using the Wrong Cleaning Products
Not all cleaners are safe for decks. Using harsh chemicals can strip the finish or damage the wood. Always choose products designed for decks, whether yours is made of treated wood, cedar, or composite. For stubborn stains, a deck-specific cleaner and a soft brush will do the trick without harming the material.
3. Neglecting Sealing or Staining
Wooden decks need protection from water and UV rays. Skipping sealant or stain can lead to fading, cracking, and rot. If your deck hasn’t been sealed or stained in a while, it’s time to give it a fresh coat. Aim to seal or stain your deck every 2-3 years to maintain its appearance and durability.
4. Allowing Water to Pool
Standing water is a deck’s enemy. It can seep into the wood, causing it to swell, rot, or attract insects like termites. After it rains, check your deck for areas where water pools. Slope your deck slightly during installation or make adjustments to ensure proper drainage. Wipe away puddles when necessary to protect your investment.
5. Ignoring Small Repairs
It’s easy to overlook loose boards, rusted nails, or tiny cracks. However, ignoring these small issues can lead to larger problems over time. Inspect your deck regularly, especially after heavy use or harsh weather. Tighten screws, replace damaged boards, and take care of repairs as soon as you notice them.
6. Forgetting to Protect Furniture and Plants
Furniture and plants can leave marks on your deck. Pots can trap moisture underneath, while furniture legs might scratch the surface. Use pads or mats under furniture and elevate potted plants to allow air to circulate beneath them. These simple steps can help preserve the finish and prevent unnecessary damage.
7. Overlooking Seasonal Maintenance
Each season presents unique challenges for your deck. In the fall, leaves can pile up and trap moisture, while in winter, snow and ice can cause wear and tear. Regular seasonal upkeep, like clearing snow with a plastic shovel and cleaning leaves, ensures your deck stays in good condition year-round.
8. Power Washing Incorrectly
A power washer can be great for cleaning, but using it incorrectly can cause more harm than good. High pressure can damage the wood, leaving it splintered or etched. If you’re using a power washer, keep the pressure low and hold the nozzle at a safe distance. Alternatively, leave the power washing to professionals who know how to handle it safely.
9. Using Metal Shovels for Snow Removal
Snow can pile up quickly in the winter, and clearing it off your deck is important to prevent excess weight and water damage. However, using a metal shovel can scratch and damage the deck’s surface, especially if it’s made of wood or composite. Instead, opt for a plastic shovel with a rounded edge to remove snow gently without causing harm. When you’re clearing snow, always push it along the grain of the wood rather than digging in.
10. Allowing Mold and Mildew to Grow
Moisture is inevitable, but letting it sit on your deck creates the perfect environment for mold and mildew to grow. Not only does this ruin the look of your deck, but it can also weaken the material over time. To prevent this, clean your deck regularly, especially in shady or damp areas where mold tends to thrive. Use a gentle cleaner designed to kill mold and mildew, and make sure to let the deck dry completely before putting furniture or plants back in place.
11. Forgetting About the Gaps Between Boards
The gaps between your deck boards are there for a reason—they allow water to drain and air to circulate. When these gaps get clogged with dirt, leaves, or other debris, it can trap moisture and cause rot. Take time to clear out these spaces with a putty knife or small brush, especially after a storm or in the fall when leaves are falling. Keeping these gaps clean will help prevent long-term damage.
12. Neglecting to Check for Loose Fasteners
Over time, screws, nails, and other fasteners on your deck can come loose. Loose fasteners don’t just make your deck less sturdy—they also pose safety hazards for you and your family. Periodically inspect your deck for any nails that have popped up or screws that need tightening. Addressing these issues early can save you from more significant repairs later and ensure your deck remains safe to use.
13. Not Protecting Your Deck from UV Rays
Sunlight can cause significant damage to wood decks, fading the color and weakening the structure over time. Applying a UV-protective sealant or stain is one of the best ways to shield your deck from sun exposure. Look for products that offer long-lasting UV protection and apply them every few years to keep your deck looking vibrant and strong.
14. Placing Rugs Without Proper Ventilation
Rugs and mats can enhance the look of your deck and provide a soft place to walk, but they can also trap moisture if they don’t allow for proper ventilation. Over time, this trapped moisture can lead to discoloration or rot in the areas beneath the rug. Choose outdoor rugs made with breathable materials and lift them occasionally to ensure the deck underneath stays dry.
15. Ignoring Early Signs of Rot
Deck rot is a serious problem that can compromise the structure of your deck. Ignoring early signs like discoloration, softness in the wood, or a musty smell can lead to extensive and expensive repairs. If you notice any signs of rot, take action immediately by addressing the issue and replacing any damaged boards. Regular maintenance and inspections can help you catch rot early and prevent it from spreading.
16. Avoiding Professional Inspections
While DIY maintenance is essential, it’s also a good idea to have your deck professionally inspected every few years. Experts can spot issues you might miss, such as hidden structural problems or subtle signs of damage. A professional inspection ensures your deck remains safe, sturdy, and ready for use.
Building Healthy Habits for Deck Care
Now that we’ve covered the mistakes, let’s talk about how to build simple habits for regular deck care. Setting a routine for cleaning and inspections can save you time and money in the long run. Remember to:
- Sweep and rinse your deck weekly to remove dirt and debris.
- Perform a detailed inspection at least twice a year, especially after winter or heavy storms.
- Reseal or restain your deck every 2-3 years for maximum protection.
- Address any issues, like loose boards or fasteners, as soon as you notice them.
By being proactive, you’ll extend your deck’s lifespan and keep it looking beautiful year-round.

FAQs About Deck Maintenance
What’s the easiest way to clean a deck?
Use a garden hose or a bucket of water with a deck-specific cleaner and a soft brush. Regular sweeping also helps prevent dirt buildup.
How do I prevent mold and mildew on my deck?
Keep your deck clean and dry. Use a mold-killing cleaner in damp or shaded areas, and ensure proper airflow around furniture and plants.
Can I use a pressure washer on my deck?
Yes, but with caution. Use a low-pressure setting to avoid damaging the wood or composite material.
How often should I reseal or stain my deck?
It’s best to reseal or stain your deck every 2-3 years or sooner if you notice fading or water soaking into the wood.
What should I do if I spot signs of rot?
Address rot immediately by removing and replacing affected boards. Apply a sealant to prevent further damage.
Keep Your Deck Beautiful with Riverview Decks
Your deck is an investment in your home and your outdoor lifestyle. Avoiding these common maintenance mistakes can keep it safe, beautiful, and long-lasting.
If you need professional help with repairs, inspections, or upgrades, Riverview Decks is here to make sure your deck stays in top shape. Get in touch today, and let’s upgrade your space!