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What Are the Disadvantages of Composite Decking?

January 15, 2025

Composite decking has become a popular choice in recent years as people seek low-maintenance outdoor living areas. Composite decking is a new type of deck trim that is highly resistant to water, mold, and fading. Then again, there is no such thing as a perfect item in the world. So, what are the disadvantages of composite decking? In this post, we will discuss the downsides of composite decking, allowing you to decide whether it is the best option for your backyard.

The Disadvantages of Composite Decking

Fading in the Sun

Despite the fact that composite decking is known for its strength and durability. However, extended exposure to direct sunlight can still cause damage. Composite decks are constructed of wood. As a result, the brilliant colors and finishes will fade over time, making them less appealing.

The sun’s UV radiation can destroy chemical connections in the decking material, causing it to change color. However, some modern composite decking materials include UV-resistant coatings. However, extended exposure to direct sunlight may cause them to fade. This is especially crucial in outdoor places with a lot of sunlight. Of fact, wood decking fades more noticeably with the same sun exposure.

Painting Is Not Recommended

Composite decking is not as paintable or stainable as traditional hardwood floors. The reason for this is that it is manufactured from a unique combination of wood fibers, plastic, and glue. During the manufacturing process, various materials are combined and dyed. This avoids the need for the finished product to be painted again.

However, once the composite deck is installed, the color and finish will remain constant. If you wish to modify the appearance or color, you must replace the deck with a new one. This does not allow the homeowner to change the color of the deck to their liking.

Solid Capped Composite Decking Board CO-03

Capped with an HDPE layer, Capped Composite Decking is made excellent at resisting stains, scratches, weathering, and fading.

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Deformation in Hot Weather

When the temperature outside reaches a certain level, composite decking materials can flex and bend. When exposed to high temperatures, composite decking expands with them. If adequate deck clearance is not given, the deck planks will expand and warp. This can make the deck surface uneven, as well as aesthetically unappealing and hazardous. Therefore, always follow the manufacturer’s installation recommendations when installing composite decking.

Timber Sub-frame Rot

One of the less visible issues with composite decking is that the substructure can be harmed. Although, composite decking does not decay. However, if it is placed on top of a timber subframe, water may gather between them. This can eventually cause the underframe to deteriorate. This is especially true where there is a lot of standing water or insufficient drainage. To avoid moisture buildup, ensure that the sub-frame is moisture-resistant and that there is appropriate air circulation.

Gets Hot in Hot Weather

If exposed to sunlight for an extended amount of time, composite decking can become extremely hot underfoot. Even hotter than standard wood decking. Because composites are composed of plastic, they absorb and retain heat. Walking barefoot on a composite deck on a hot day can be uncomfortable. This can be a major issue on decks where people want to rest or play outdoors when the weather is beautiful. Choosing a light hue can help alleviate this issue to some extent. This is because light colors absorb very little heat.

Restoration Difficulties

Composite deck boards can be more difficult to repair than wooden decks. Composite deck boards, unlike wood decks, cannot be sanded or repaired because they are created in a factory. If a composite deck board breaks, the entire board is usually replaced. This can be costly, and the color may become inconsistent as the boards age. Not only does this make repairs more difficult, but it also decreases the deck’s beauty.

Composite Deck Board 1

Increased Upfront Costs

One of the primary disadvantages of composite deck boards is their greater initial cost compared to traditional wood decks. This is because composite deck boards are made out of wood fibers and plastic. It is more complicated to manufacture and requires more resources.

However, installing composite decking can result in long-term savings. This is because it requires less maintenance and lasts longer. However, the initial cost can be significant for some families. As a result, the long-term benefits must be evaluated against the initial expenses.

Learn More: How Much Does a 20 x 20 Composite Decking Cost?

Little Residual Value

Composite decking can indeed make an outdoor space more attractive and functional. However, it does not meet everyone’s needs. At least some potential purchasers may prefer the look and feel of solid wood over composite materials. As a result, choosing a composite deck should be considered as an investment in your personal enjoyment rather than a strategy to raise the value of your home.

Artificial Appearance

Although innovations in manufacturing technologies have made composite decks look very similar to solid wood, they still have obvious visual variations. Some individuals say that composite decks lack the natural beauty and warmth of solid wood. This can be problematic for those who desire a natural appearance. The texture and produced appearance of composite deck boards might make them appear overly flawless or artificial. This is because they lack the natural diversity and character that wood grain offers.

Surfaces that Can Be Slippery

Composite decks can be extremely slippery on wet days or when there is a swimming pool nearby. This is because the deck’s surface is made of smooth plastic and lacks the natural roughness of wood grain. Manufacturers frequently address this issue by using a textured finish or non-slip coating. However, this is not always effective, and some products might be harmful when soaked. People should be aware of how slippery composite decking may be, particularly in locations where water frequently gathers.

Composite-Decking

Susceptibility to Stains and Scratches

Composite decking is famed for its durability, yet it can still become damaged or scraped. Large pieces of furniture, pet claws, and normal wear and tear can all cause scratches on the surface. Over time, this might detract from the deck’s visual appeal. Some high-end composite decks include protective coatings to help with this. However, damage can still occur, particularly in high-traffic areas or in homes with children and pets.

Maintenance-Free Claims Are not Entirely Accurate

Composite decking is often marketed as a low-maintenance alternative to wood. However, it requires some upkeep. It should be cleaned on a regular basis to prevent dust, debris, and mold from accumulating. This is particularly true in damp or gloomy environments.

Even though composite decking does not require sanding, staining, or sealing like wood. Still, homeowners should be aware of the amount of maintenance required for composite decking. Neglecting basic care can lead to issues and harm the deck’s look and lifetime.

Composite deck quality varies widely between brands and product lines. This can lead to differences in the decks’ lifespans, look, and durability. Some low-quality composite decks may deteriorate, scrape, or crack faster than high-quality decks. As a result, customers must conduct extensive research before purchasing products from well-known brands. Quality composite deck brands offer long-standing warranties and track records of performance.

Damage from Expansion and Contraction

Composite decking materials expand and compress in response to temperature changes. If this is not taken into consideration during installation. Then, over time, it could crack, split, or warp. Expansion and contraction can potentially cause structural damage to the deck. To accommodate these changes, it is critical to adopt appropriate spacing and installation procedures. This feature emphasizes the need to have composite decking professionally installed. Additionally, this can raise the cost of deck installation.

Multi-Level-Deck

Susceptibility to Mold and Mildew

Composite decks will not rot or mold. However, mold can still form on it, particularly in moist or dark regions. The porous structure of composite materials absorbs moisture and can create an ideal environment for mold growth. This problem can be minimized by cleaning on a regular basis and ensuring proper air circulation and drainage. Therefore, homeowners should address this issue, particularly in wet or gloomy regions.

How to Prevent Composite Decking Defects

Select a Reputable Composite Deck Brand

High-quality composite decking is more durable and has fewer issues. As a result, using a well-known composite deck brand can reduce the number of issues that may arise with the deck. Trex, COOWIN, Timbertech, EVODEK, Fiberon, and Aezk are among the most popular composite deck brands on the market today.

Proper Installation

Following the manufacturer’s installation instructions can significantly reduce the number of difficulties with composite decking. Allowing adequate distance while installing composite deck planks will effectively prevent warping. A strong ventilation system is necessary to prevent moisture from accumulating underneath the deck. This reduces moisture buildup, which can lead to mold and decay in the structure beneath the deck.

Correct Use and Maintenance

Composite decking has the advantage of being minimal maintenance, but it does require some cleaning. You can clean the deck with mild soapy water or detergent. Regular cleaning of composite decking not only keeps it looking good but also prevents mold and mildew from growing on the deck’s surface.

Composite-Decking-2

What Deck Material Is Right for You?

Traditional wood decks are constructed from natural wood and feature a natural wood grain surface. You can treat or paint it to protect it from the elements. The disadvantage of wood decks is that their color can fade with time. In addition, traditional wood decks are susceptible to insect damage, which can be avoided by applying a sealer or coating.

Composite deck boards, on the other hand, are much more durable and require far less maintenance than wood deck boards. Wooden decks require regular painting and sealing. In contrast, composite decks do not require the use of sealers or paint. Furthermore, composite decks are more durable than wood, making them ideal for high-traffic areas.

As a result, the type of deck that best suits your needs is determined by your budget and lifestyle. Composite decking may be the best choice for low maintenance.

If you can’t live without the look of solid wood, select a wood deck. Although, wood decks are not as durable as composite decks. However, there are specialized sealants and maintenance methods that can help protect your wood deck.

Summary

Capped composite decking can help solve these problems. COOWIN’s composite decking utilizes state-of-the-art co-extrusion technology to solve many of the problems commonly associated with ordinary composite deck boards. This composite decking has a polymer shell that allows for a more durable and long-lasting product.

Unlike most composite decking, COOWIN’s capped composite decking will not fade. In addition, it has better resistance to scratches, water, and mold. So the deck can maintain its look and character for a long time. For those who want to solve the common problems of composite decking, COOWIN’s capped composite decking is a good choice.

Two-Tone-Deck

FAQ

What is Composite Decking?

Composite decking is a man-made deck board serving as an alternative to traditional wood decking. It blends wood fibers and plastic with a binding agent to create a durable, low-maintenance, and eco-friendly decking solution. It features the natural appearance and embossed texture of wood while effectively resisting common wood ailments such as rot, cracking, and insect infestation.

Does Composite Decking Fade over Time when Exposed to Sunlight?

Yes, composite decking will fade over time if exposed to sunlight for an extended period of time. The chemical bonds in the deck material are broken down by the sun’s UV rays, making it look less shiny. However, choosing a composite deck with a UV-resistant coating can reduce this effect.

Can Composite Decks Be Stained or Painted?

Most composite decking cannot be painted or stained. It is made from a mixture of wood fibers, plastic, and adhesives. Color is added during the manufacturing process and the color and finish will not fade after installation.

How Does Composite Decking Cope with Heat?

In very hot weather, composite decking has the potential to warp and buckle. Although composite deck boards expand less with heat, they will still expand. Therefore, it is important to allow for proper deck board clearance. Although high-quality composite decks are designed to minimize these effects. However, it is still important to consider this where there are large temperature variations.

Does Composite Decking Get Hot when Exposed to the Sun for Long Periods of Time?

In fact, composite decks can get hotter than regular wood decks when exposed to the sun for extended periods of time. The plastic material of composite decks absorbs and retains heat. However, choosing light-colored deck boards will help reduce heat absorption.

Are There Any Problems that Can Occur when Restoring a Composite Deck?

Some problems with composite deck boards are more difficult to fix than those with traditional wood decks. This is because you cannot sand or repaint individual boards. Damaged composite deck boards usually need to be replaced from top to bottom, which can be expensive. And because boards fade over time, they can cause color differences.

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Galen Content Writer
Galen is a content creator and decorator with five years of experience designing home decor. In his daily life, Galen is constantly on the lookout for the latest, great examples of house design and further optimizes his solutions. Additionally, he writes articles related to outdoor design, interior design, and architectural decorating materials to help brands build more engaging relationships with their audiences.
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