One of the main reasons why you would lay composite decking over existing wood is simply to save time.
It’s quicker and easier to lay composite over an existing base than it is to remove the old decking and start from scratch. You can also avoid the waste and mess associated with demolition and disposal by reusing your existing deck framing.
That said, there are a few things you should keep in mind before laying composite decking over wood.
In this article, we’ll discuss whether it’s okay to install composite decking over wood, and what you should do to ensure a successful installation.
- 1 Should Composite Deck Boards Be Placed On Top Of Wood?
- 2 The Condition of the Existing Deck is a Factor
- 3 You Might Want To Take The Height Into Consideration!
- 4 You Could Be Limited in Your Choice of Composite Decking
- 5 It May Not Be Worth It In The Long Run
- 6 FAQs
Should Composite Deck Boards Be Placed On Top Of Wood?
It is entirely possible to lay composite decking boards on top of wood decking boards.
We would always recommend using screws specifically designed for composite decking when attaching the board to the frame as this will avoid the boards from splitting.
When installing composite decking over wood, you should never attach the two materials together with nails or screws.
The weight of the composite material will put too much pressure on the fasteners, which will eventually lead to the wood splitting.
The best way to install composite decking over wood is to use hidden fasteners.
These are special screws that are designed to grip the material without causing any damage.
You should also avoid walking on your composite decking boards when they are wet.
Wet composite decking is much more susceptible to damage and should be avoided whenever possible.
If you must walk on your composite decking, make sure that you wear shoes that have a soft sole.
This will help to avoid any scratches or gouges in the material.
The Condition of the Existing Deck is a Factor
The most important thing to consider is the condition of your existing deck. If it’s in good shape, with no rotting or warping, then you should be fine to lay composite decking over it.
However, if your deck is in poor condition, then you might want to consider starting from scratch.
You Might Want To Take The Height Into Consideration!
Another thing to consider is the height of your deck. If it’s more than a couple of feet off the ground, then you might want to consider removing the old decking and starting from scratch.
This is because composite decking is usually only available in limited thicknesses, so you might not be able to get the look and feel that you want if you’re trying to lay it over a high deck.
Related: Composite Decking Pros and Cons
You Could Be Limited in Your Choice of Composite Decking
If you’re dead set on installing composite decking over wood, then you might be limited in your choice of products.
This is because most composite decking is designed to be installed directly on top of joists, so it may not be suitable for laying over an existing deck.
That said, there are a few brands that do make composite decking specifically designed for installation over an existing deck, so it’s worth doing some research to see if you can find one that will work for you.
It May Not Be Worth It In The Long Run
Installing composite decking over wood may not be the best idea if you’re looking for a long-term solution.
This is because composite decking is designed to last for many years, while wood decking will eventually need to be replaced.
So, in the long run, you might end up spending more money by installing composite decking over wood.
Can I replace my wood deck boards with composite?
Yes, absolutely! In fact, we would always recommend using screws specifically designed for composite decking when attaching the board to the frame as this will avoid the boards from splitting.
What goes under composite decking?
A concrete base is excellent for composite decking. If you are installing the boards over an existing deck, make sure that the frame is in good condition and that the fasteners are properly secured.
Can I lay composite decking on top of ground?
Yes, but we would only recommend doing this if you are using a product specifically designed for installation over bare ground.
What is a decking subframe?
A decking subframe is the frame that your decking boards will be attached to. It’s important to make sure that the subframe is made from a durable material, such as pressure-treated wood, so that it can support the weight of the decking.
Does decking need a frame?
Yes, all decking needs a frame to be properly installed. The frame provides support for the decking boards and helps to keep them level.
Do I need to seal my composite deck?
Most composite decks come with a built-in sealer that doesn’t require any maintenance, but it’s always a good idea to check with the manufacturer to see if they recommend any additional sealing.
Can I use composite decking in a fire pit?
Yes, you can! Composite decking is actually quite resistant to heat and won’t be damaged by the heat of a fire pit. However, we would always recommend using a mat under the fire pit to protect the deck from any sparks.