We’ve been selling composite decking for a long time, so we know a lot about it. Even while we strongly support these decking options, we would be negligent if we did not also discuss the numerous drawbacks they may have.
Equipped with this knowledge, you can decide intelligently if composite decking is appropriate for your project. The following is a compilation of the drawbacks of both installing and supplying composite decking for both residential and commercial buildings.
Composite Decking Drawbacks
Unfit for Painting
Composite decking is not intended to be painted or stained like traditional wood decking. This is because of its distinct makeup, which consists of a blend of binding chemicals, polymers, and wood fibers. During the production process, these materials are mixed and color-treated to create a final product that doesn’t need to be painted. However, this limits homeowners’ options for customization because the color and finish of the composite decking are set in stone once it is put, making it impossible to paint to change the look or renew the color.
Rotting Timber Subframe
The possible effects of composite decking on the underlying timber subframe are among its less evident drawbacks. Although composite decking is rot-resistant, if it is placed over a timber subframe, moisture that gets trapped between the two materials may eventually cause the subframe to rot. This is especially troublesome in places with high moisture content or poor drainage. In order to avoid moisture buildup, it is crucial to make sure that the subframe is treated for moisture resistance and that there is enough ventilation.
Retention of Heat in Extended Sunlight
Compared to typical wood decking, composite decking can get uncomfortable hot underfoot when exposed to extended sunshine. It may be challenging to walk barefoot on bright days due to the heat-absorbing and heat-retaining properties of composite decking’s plastic composition. For decking areas meant for play or leisure in warm weather, this might be a major disadvantage. Because lighter colors absorb less heat than darker ones, choosing lighter hues can help alleviate this problem to some degree.
Repairing Things Is Hard
Compared to typical wood decking, composite decking can be more difficult to repair. Composite decking cannot be sanded down or refinished like wood because of its synthetic nature. When a composite deck board is broken, it is frequently necessary to replace the entire board, which can be expensive and eventually cause color mismatches as a result of fading. As a result, the repair procedure becomes more challenging, possibly more costly, and less visually appealing.
Increased Initial Expenses
The initial cost of composite decking is more than that of traditional wood decking, which is one of its main drawbacks. Composite decking is more expensive due to its more complicated and resource-intensive manufacturing process, which blends plastic and wood fibers. For some homes, the initial outlay can be a major deterrent, so it’s crucial to balance the long-term advantages against the upfront expenses, even though composite decking can save money over time owing to lower care needs.
Comparing Artificial and Natural Wood Looks
There is still a noticeable difference in appearance even though composite decking can now nearly resemble natural wood thanks to improvements in manufacturing techniques. A disadvantage for people who appreciate the natural look is that some people feel that composite decking lacks the warmth and genuine charm of real wood. Composite boards’ artificial roughness and homogeneity can occasionally come across as overly flawless or artificial, without the distinctive variances and personality present in natural wood grains.
Damage from Contraction and Expansion
If not appropriately taken into consideration during installation, the expansion and contraction of composite decking materials due to temperature variations may eventually cause warping, splitting, or cracking. The deck’s structural integrity may also be impacted by expansion and contraction, therefore careful spacing and installation methods are required to account for these movements. This feature emphasizes how crucial expert installation is and could raise the project’s overall cost and complexity.
Exposure to Mildew and Mould
Despite its resistance to rot and decay, composite decking is nonetheless vulnerable to the growth of mold and mildew, particularly in moist or shady places. Because the composite material is porous, moisture may be trapped, creating an ideal environment for the growth of mold and mildew. Although this problem can be lessened with routine cleaning and proper drainage and ventilation, homeowners should still take it into account, especially in humid or wet locations.