What Are the Disadvantages of Composite Decking

Composite decking has gained popularity in recent years as a low-maintenance alternative to traditional wood decking. However, this material is not without its disadvantages. As an AI language model, I can help you explore the potential drawbacks of composite decking and better understand whether it’s the right choice for your project. From fading and discoloration to instability and susceptibility to scratches, there are several reasons why composite decking may not be the best option for your outdoor living space.

Keep reading to learn more about the downsides of composite decking and consider these factors before making your final decision.

1. Limited Repair Options

Are you wondering about the limitations of repairing your composite decking? Well, you’ve come to the right place! As previously discussed, composite decking has some disadvantages that you should consider before making your decision. One of them is the limited repair options available.


Unlike real wood, composite decking cannot be sanded down or refinished. This means that once the decking is damaged, it cannot be repaired like real wood can. So, what are your options when it comes to repairing composite decking? Generally, the only solution is to replace the damaged board completely. This can be a costly and time-consuming process, as it involves removing the damaged board and installing a new one.


To avoid this issue, it is recommended that you take preventive measures to avoid damage. Regular cleaning and proper maintenance can go a long way in preventing scratches and stains that could lead to potential damage. Additionally, using furniture pads and avoiding dragging heavy items across the surface can also help minimize scratches.


In conclusion, while composite decking has several benefits worth considering, it is important to be aware of its limitations, such as limited repair options. But with proper care, you can prolong the life of your composite decking and prevent damage from occurring.

2. High Cost of Initial Installation

Q: Why is the cost of installing composite decking higher than traditional wood decking?
A: The cost of composite decking is higher initially due to the materials used in its construction. Composite decking is made from a combination of wood fibers and recycled plastic, making it more durable and resistant to weather conditions. This increased durability comes at a cost, as the materials are more expensive than traditional wood decking.

Q: Is the higher initial cost worth it in the long run?
A: While the initial cost of installing composite decking may be higher, it can be worth it in the long run. Composite decking requires less maintenance and repair than traditional wood decking, and it can last longer. This means over time, you may save money on maintenance and replacement costs.

Q: Can the installation cost be reduced?
A: While the cost of installation may be higher for composite decking, there are ways to reduce these costs. One way is to install the decking yourself if you are comfortable with DIY projects. You can also shop around and compare rates from different contractors to find the best deal.

Q: How can I justify the higher cost to myself or others?
A: It is important to consider the long-term benefits of composite deckings, such as its durability and low-maintenance requirements. Additionally, composite decking is more eco-friendly than traditional wood decking, as it is made from recycled materials. Finally, composite decking can increase the value of your home, which can be a worthwhile investment.

3. Susceptibility to Scratches and Stains

Q: Is composite decking susceptible to scratches and stains?

A: Yes, composite decking is more prone to scratches than traditional wood decking. Although the manufacturers usually include a protective layer over the surface of the composite decking, it still can be scratched due to heavy traffic, furniture movement, or wear and tear. Moreover, composite decking is not immune to staining, as it can absorb spills and liquids that are left on the surface.

Q: Can scratches be repaired on composite decking?

A: Unfortunately, scratches on composite decking can be more difficult to repair than on natural wood surfaces. Most composite deck boards come in pre-mixed colors or patterns, making individual boards difficult to replace without affecting the overall look of the deck. Small scratches can be buffed out with sandpaper, but this requires a lot of manual effort and can change the texture of the surface.

Q: How can you prevent stains on composite decking?

A: To prevent stains on composite decking, it’s important to quickly clean up spills or messes using a simple cleaning solution. A mixture of warm water and mild soap can often do the trick. You should also avoid placing any hot objects, such as grills, directly on the composite decking surface since this can cause damage or discoloration.

Overall, while composite decking may be more prone to scratches and stains than traditional wood decking, with proper care and maintenance these downsides can be minimized. Consider these factors when deciding whether to invest in composite decking for your home.

4. Potential for Fading and Discoloration

Q: Will my composite deck fade over time?
A: While composite decking is more resistant to fading than traditional wooden decks, there is still a potential for some fading to occur, especially in direct sunlight. It’s important to keep your deck clean and use a specially formulated composite deck stain to help prevent or address any fading.

Q: Can my composite deck become discolored?
A: Yes. Extreme weather conditions or exposure to certain chemicals can cause discoloration on some composite decks. However, some manufacturers offer a warranty against discoloration, so it’s important to research and choose a reputable brand.

Q: Can scratches and stains cause discoloration on a composite deck?
A: Scratches and stains can occur on composite decking, but they typically will not cause significant discoloration. Most manufacturers provide tips and tools for removing stains and scratches to keep your deck looking great.

Q: How can I prevent fading and discoloration on my composite deck?
A: To prevent fading and discoloration on your composite deck, it’s important to keep it clean and properly maintained. Use a composite deck cleaner and protectant to remove dirt, debris, and other materials that may cause discoloration or fading. Additionally, avoid placing hot objects directly on your deck and use caution when using tools that may scratch the surface.

Q: Is fading and discoloration a common problem with composite decking?
A: While fading and discoloration can occur on some composite decks, it’s not a common problem. With proper maintenance and care, your composite deck can remain vibrant and beautiful for years to come.

5. Reduced Aesthetics Compared to Real Wood

Q: Is it true that composite decking doesn’t look as good as real wood?
A: While composite decking has come a long way in mimicking the look of real wood, it cannot replicate the natural beauty and unique variations that real wood provides. If aesthetics are a top priority for you, then real wood decking may be a better option.

Q: Can you improve the aesthetics of composite decking?
A: Yes! There are a few ways to enhance the look of composite decking. You can add different colors or even patterns through painting or staining. Additionally, composite decking can be designed to mimic the natural look of wood through various textures and grain patterns.

Q: What about the feel of composite decking compared to real wood?
A: Composite decking may feel different underfoot compared to real wood. While it is designed to replicate the look of wood, it often lacks the same texture and warmth that real wood provides.

Q: Should aesthetics be my only priority when choosing between composite and wood decking?
A: No, it’s important to weigh all the pros and cons of both options before making a decision. While real wood may be more aesthetically pleasing, composite decking often requires less maintenance and has a longer lifespan. Ultimately, it comes down to personal preference and what factors are most important to you.

6. Limited Heat Resistance

Composite decking is a great alternative to real wood, but it does have its limitations. One of these is its limited heat resistance. Here are some frequently asked questions about this topic:

Q: Why does composite decking become hot in direct sun?
A: Composite decking is made from a combination of plastic and wood fibers. While the plastic adds durability and resistance to moisture, it also contributes to heat retention. When the sun beats down on composite decking, it can become scorching to the touch.

Q: Does the limited heat resistance of composite decking pose a safety concern?
A: As long as you’re aware of the potential for heat buildup, composite decking is still a safe option. However, it’s important to avoid barefoot contact with the surface on hot days. You may also want to consider using outdoor rugs or installing a shade structure to keep the deck cooler.

Q: How does composite decking compare to real wood in terms of heat resistance?
A: Real wood can also become hot in direct sun, but it generally doesn’t retain heat as long as composite decking does. Some types of real wood, like cedar, can be more heat-resistant than others.

Q: Are there any special care instructions for maintaining composite decking’s heat resistance?
A: To minimize heat buildup, you can rinse your composite deck with a hose or use a pressure washer on a low setting. Avoid using dark-colored outdoor furniture, which can absorb more heat than light-colored pieces. You can also choose a lighter color for your composite decking, which will reflect more light and heat.

Q: Is limited heat resistance the only downside to composite decking?
A: No, there are other factors to consider, such as the initial installation cost, susceptibility to scratches and stains, and potential for fading and discoloration. However, many people still choose composite decking for its durability, low maintenance requirements, and resistance to mold and mildew.

In closing, while composite decking can become hot in direct sun, it’s still a safe and durable option for outdoor living spaces. By taking a few precautions and understanding its limitations, you can enjoy your composite deck for years to come.

7. Slippage When Wet

Are composite decks slippery when they get wet?

No, high-quality composite deck boards will have high slip resistance, even when they are wet. However, if the boards are not maintained properly, they can become slippery over time.

What can cause slipperiness on composite decks?

If you don’t keep your deck clean and clear of debris, you may experience an increased risk of slipping. Mildew and algal growth can also make the boards slippery, so it’s important to keep them clean and dry.

How can I minimize the risk of slipping on my composite deck?

To minimize the risk of slipping, make sure to clean your deck regularly and remove any debris that may accumulate on the surface. Use a cleanser that is recommended by your deck manufacturer and follow the instructions carefully. Also, consider installing anti-slip strips along the surface of your deck, especially in areas that are prone to being wet or icy.

Should I worry about my composite deck swelling or becoming moldy?

No, composite decking boards are designed to resist swelling, mold, and mildew, even when they get wet. However, if you don’t maintain your deck properly, you may experience some of these issues over time. To prevent mold and mildew growth, make sure to keep your deck clean, dry, and well-ventilated.

Overall, while slippage may be a concern for some composite deck owners, it’s easily managed with proper maintenance and care. By keeping your deck clean, dry, and slip-resistant, you’ll be able to enjoy your outdoor space without worry.

8. Environmental Impact of Composite Materials

Q: What is the environmental impact of using composite decking materials?

A: While composite decking materials are often made with recycled materials, their manufacturing can still have environmental consequences. The production of composite materials requires energy and resources, and it can also produce greenhouse gas emissions. Additionally, composite materials typically cannot be recycled, which means they will end up in a landfill when they reach the end of their lifespan.

Q: How can I reduce the environmental impact of my composite decking?

A: There are a few steps you can take to minimize the environmental impact of your composite decking. First, make sure you choose a reputable manufacturer that uses sustainable materials and has third-party certification from an organization like the Forest Stewardship Council. You can also look for composite decking that is made with biodegradable additives, although this is not yet widely available.

Q: Are there any alternative decking materials that are more environmentally friendly than composite?

A: There are a few options for environmentally-friendly decking materials. Real wood decking can be a good choice if it is sustainably harvested and FSC-certified. Bamboo decking is also becoming more popular as a sustainable alternative, but it can be more expensive than composite decking. Additionally, metal and concrete decking can be long-lasting and durable, although they may not offer the same aesthetics as wood or composite decking.

Overall, while composite decking materials may have environmental drawbacks, they can still be a good choice for those who prioritize durability and low maintenance. By choosing a responsible manufacturer and taking steps to minimize your impact, you can enjoy the benefits of composite decking while minimizing your environmental footprint.

9. Limited Lifespan Compared to Real Wood

Q: Why does composite decking have a limited lifespan compared to real wood?
A: Despite being highly durable, composite decking is not immune to some of the drawbacks that come with natural wear and tear. Over time, composite decking may become worn down in high-traffic areas, warped from heat exposure, or discolored from fading. In contrast, real wood decks can generally last anywhere from 10 to 30 years before they require repair or replacement.

Q: Can I extend the lifespan of my composite decking?
A: While you can’t completely prevent the natural wear and tear that may come with composite decking, you can take steps to prolong its longevity. Regularly cleaning your deck can help prevent mold and mildew growth, which can cause lasting damage. Additionally, avoiding harsh chemicals or abrasive cleaning tools can prevent scratches or stains.

Q: Is real wood decking better for the environment?
A: The environmental impact of decking materials is a complex issue. While real wood decking is biodegradable and can be sustainably harvested, it can also contribute to deforestation and require frequent staining or sealing products. Composite decking is made from recycled materials, which can reduce waste but may contain chemicals or additives that have an environmental impact. Ultimately, the best choice for your deck may depend on your environmental priorities.

Q: Should I choose composite or real wood decking for my home?
A: Deciding whether to choose composite or real wood decking depends on your specific needs and priorities. Composite decking offers a low-maintenance alternative that can last for many years without splintering or warping. However, composite decking may come with a higher initial cost and may not have the same aesthetic appeal as real wood decking. At the end of the day, the choice comes down to finding a decking material that meets your individual needs and preferences.

10. Potential for Mold and Mildew Growth

If you’re considering composite decking for your outdoor space, it’s important to know about the potential for mold and mildew growth. While composite decking is more resistant to mold and mildew than real wood, it’s not completely immune.

Q: Why is composite decking prone to mold and mildew growth?
A: Composite decking is made up of a mixture of plastic and wood fibers, which can create a hospitable environment for mold and mildew to grow, especially in shady or humid conditions. Additionally, certain mold and mildew cleaners can bleach out the colors of synthetic deck boards.

Q: What can I do to prevent mold and mildew growth on my composite deck?
A: First, make sure to regularly sweep and clean your deck to prevent the buildup of dirt and debris. If you notice any mold or mildew growth, use a cleaner specifically designed for composite decking and follow the manufacturer’s instructions carefully. Consider treating your composite decking with a mold inhibitor to further prevent growth.

Q: How does mold and mildew growth impact my composite decking?
A: Mold and mildew growth not only looks unsightly, but it can also compromise the structural integrity of your deck over time. Additionally, certain types of mold and mildew can be harmful to your health, so it’s important to address any growth as soon as possible.

In summary, while composite decking is more resistant to mold and mildew growth than real wood, it’s important to take preventative measures and address any growth as soon as possible to ensure the longevity and safety of your deck.