Can You Install Composite Decking over The Wooden Deck?
In recent years, composite decking has gradually become an alternative to traditional wood decking. This is because it is durable, environmentally friendly, and reliable. However, many homes face a common question: can you install composite decking over a wooden deck?
To answer this question, we first need to consider safety. Of course, practicality and long-term durability should also be guaranteed. Our advice is that you can put a composite deck over a wood deck. But before doing so, you should consider a few things. In this article, we will show you how to use composite decking to remodel your old wooden deck based on practical experience.
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Table of Contents
Factors to Consider When Installing Composite Decking on Wood Decks
There are many things to consider when installing a composite deck over a wood deck. Technically, it is possible. However, whether this is possible depends on many factors. The main ones include the following:
Timber Type
The type of wood in your existing deck is a key factor in the installation. If your decking material is pressure-treated lumber, then it can provide a stable foundation for a composite deck. On the other hand, untreated wood that is more susceptible to damage poses a risk during installation and use.
Age of The Wood Deck
The age of a wood deck is an important issue. Newer wood structures may be adequate to support a composite deck. However, if your wood deck has been in use for many years, it could lead to structural problems. The safest thing to do in this case is to remove and install a composite deck.
Extent of Damage
Before you start the installation, you need to carefully inspect the wood deck for damage and the extent of the damage. If the wood deck already has areas of visible rot or breakage, it would not be a wise choice to lay composite decking over it. You will also need to check that the deck is draining properly.
Check The Solidity of The Wood Deck
In order to keep your outdoor activities safe, it is important to double-check the solidity of your wood deck. Generally, composite decks weigh more than wood decks. Therefore, in addition to checking for damage and rot, make sure that the base and joists are in good shape and strong enough. This is so that they can withstand the extra weight of composite decking.
How to Install Composite Decking over The Wooden Deck?
Generally speaking, the installation of composite decks is relatively simple. EVODEK can provide professional installation instructions. Installing a new composite deck over an existing deck structure requires some additional steps.
Clean The Surface of The Wood Deck
Before you begin, make sure the wood deck is clear of anything in the way, such as outdoor furniture. You will also need to remove the deck fence first. Thoroughly clean the wood deck and repair any areas that need fixing.
Remove Unwanted Boards
Use a drill, hammer, or pry bar to remove any boards you don’t want. In the process, you can redesign and plan your deck. Create an outdoor space that better meets your requirements and preferences. One thing to keep in mind is to be safe when removing. Use protective tools such as gloves and goggles to keep yourself safe from dust and wood chips.
Inspecting and Repairing Wood Joists
Carefully inspect the joists to find loose screws or damaged areas. You can use a screwdriver to probe the area in contact with the base. Repair any minor damage before you begin laying composite decking. To prevent joist rot and water ingress, you may also need to use joist protection tape to seal the deck bolts.
Laying Waterproofing
Waterproofing is very important when laying composite decking over wood decking. Use a waterproofing material to evenly cover the entire wood deck. This waterproofing helps prevent water from being trapped between the wood deck and the composite deck layers. This prevents them from mold and rot caused by moisture.
Installing Composite Decking Boards
Choose the right composite decking fasteners according to the needs and personal preferences. The composite decking boards are then measured and cut to fit the dimensions of the deck. Next, attach the deck to the support joists using a hidden fastener system. Be careful to make sure that you leave the right amount of space between the deck boards.
As a general rule, laying composite decking boards should start on the outside of the deck and work inward. Whether you are doing a DIY installation or looking for a professional to do the work, read the instructions provided by the composite deck manufacturer carefully. Follow the correct steps to ensure that the composite deck is installed as required.
What Benefits Can I Expect from Installing Composite Decking over The Wooden Deck?
Why do many homes choose to install a composite deck over an existing wood deck? Because composite decking offers the following benefits:
Improved Aesthetics
Without a doubt, the most obvious change that comes with installing a composite deck over an old wood deck is the appearance of the deck. EVODEK’s composite decks come in a variety of different styles of finishes and colors. It has a modern look compared to wood decks. In addition, it remains aesthetically pleasing for a long time without maintenance.
Extend The Life of Your Deck
You can easily enjoy years of outdoor living after installing a composite deck. This is because composite decks last much longer than wood decks. Of course, the service life of a composite deck installed over a wood deck also depends on the stability of the underlying structure. In addition, proper installation provides the safety and durability of the deck.
Saving Time and Money
There is another benefit to installing composite decking over wood decking. That is that this requires less cost and is faster than building a new deck from scratch. In addition, the fact that composite decks don’t require constant maintenance saves homeowners time and money.
Environmentally Friendly
Replacing a wood deck with a composite deck made from renewable materials can also reduce the consumption of forest resources. If your wood deck is already in need of repair or replacement, why not choose a composite deck that is kinder to the environment?
Other Considerations
In some cases, it may be a good idea to install a composite deck over a structurally stable wood deck. However, if the wood deck is severely worn, rotted, or unstable, then it may cause problems in the future. This is because the wood structure underneath will continue to decompose, eventually leading to damage to the composite deck. This could reduce the safety and solidity of the composite deck.
If you inspect your wood deck and find that it is in poor condition, it is wise to replace it completely with a composite deck. You may think that this is a big project that will cost a lot of money. But it is more of an investment. It can make your deck last longer. In addition, a complete set of composite decking is not only more durable but also more aesthetically pleasing.
Conclusion
In conclusion, you can lay a composite deck on top of your existing wooden deck. However, you should carefully consider the condition of your wood deck before making this choice. The stability of the structure underneath will affect the longevity and safety of the deck. To ensure that your investment in a composite deck is safe and long-lasting, decide carefully. If the wood deck is in poor condition, the best thing to do is to replace it completely.
Regardless of the type of installation, be sure to read the composite deck installation guide to ensure proper installation. If you need help, please contact us. EVODEK can provide you with professional composite deck installation instructions.
FAQ
Which is Heavier, Wood Decking or Composite Decking?
Generally, composite decking is made of wood fibers and recyclable plastic and is therefore heavier than wood. In most cases, composite decking is 25% heavier than wood decking. Therefore, when installing it, it is also important to consider the load-bearing capacity of the underlying structure.
Should I Use Screws or Nails to Install The Composite Decking?
Generally, we recommend that you use the same fasteners that are used for composite decking. This prevents bending caused by the expansion and contraction of the composite deck. If you are going to fasten the composite deck with screws, make sure you drill holes in the deck in advance. This will help extend the life of the composite deck and give the deck an attractive surface.
How much would a 20×20 composite deck cost?
A professional installation of a 20×20 (400 sq. ft.) composite deck usually costs between $18,000 and $40,000. The average cost is between $30,000 and $40,000, or around $90 to $100 per square foot, depending on how complicated it is, the railings, and the materials used.
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