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Installing a composite deck over a wooden deck

If your wood deck has begun to creak, wobble and rot, the signs are there that you should probably start thinking about getting it replaced. Not only will it start to look bad, but a deck that has surpassed its time can be a major safety hazard. By replacing your wooden deck, you'll be doing yourself and others a huge favour. 

Since wooden decks have a limited life span, composite decking is often turned to as it is much more durable. The question many homeowners ask, however, is can you install composite decking over wood decking? Well, let's find out! 

Laying composite decking over wood 

The most logical reason for laying composite decking over an existing wood deck is the time that it can save. But can you do such a thing? In short, yes you can. You are more than capable of placing composite deck boards over existing wooden ones in order to save time and money from building an entirely new frame. However, despite the fact that you can do, should you do it? 

Should you place composite deck boards over wood?

So, we've gathered that you can place a new decking over your old wooden one, but is this something that you should do? Well, not really. While it does seem like the logical choice when we think about time and money, doing so has several downsides. 

Before you begin any rebuilding work, you need to first think about the quality of the existing wood deck. How old is it? Is it fairly new? Or has it begun to rot and now needs to replaced? These questions are crucial questions to ask because when you begin to place new materials over existing decking, the latter can directly impact the former. In the case of wooden decking, if the existing boards are old and rotting, the new composite boards on top will have their lifespan reduced. Despite composite deck boards offering great resistance to rotting, the surrounding structure will unfortunately suffer. Moisture will begin to get trapped underneath and will damage both the pre-existing wood decking and the new composite one. By placing new composites over wood, you may be doing more harm than good and in the end, it will cost you even more money to replace. 

On the other hand, if your wooden deck is relatively new and the materials have been pressure-treated, there's a good chance that it won't affect the overall quality and lifespan of your new composite boards. Even if it did, it will not cause as much damage as an old deck would cause. But the question remains, why would you want to build over a new-ish deck? Before carrying out any sort of work, you should consider the price of the materials needed since composite decking does have a high initial cost. 

Knowing that installing composite decking over existing wood decking isn't recommended, what else can you do if you need to replace it? 

How to replace your wooden deck 

If you have an old, tired, rotting wooden deck, instead of building a new composite deck over it and causing further potential issues later on down the line, simply replace your wooden deck boards with composite ones! Yes, it's that simple. It does mean that you'll have to rip out each of your existing boards and adjust the existing frame to be able to hold the weight of your new composite deck. But by doing this, you will be saving yourself a whole lot of trouble, time and money. Replacing an old deck is fairly straightforward, but if you need some direction, you can watch our video which explains the steps you need to take. 

Replacing Your Existing Deck >


If you require more information on replacing your wooden deck with a new composite one or for some advice on laying composite deck boards over an existing wood deck, please do not hesitate to get in touch with the TimberTechUK team - we'd be more than happy to help! 

Splitting your garden over different layers is a great way to maximise space. In fact, adding tiered decking and steps is one of the best-known tricks in the garden design industry to help make small gardens appear bigger. When your entire garden exists on one plane, things can look flat and uninteresting. That's why outdoor steps are becoming increasingly popular. Of course, when you decide to add outdoor steps to your garden, you want to feel reassured that they'll look good, last a long time and be perfectly safe for everyone in your household to use.

Here at TimberTech, we provide a range of high-quality composite decking which will allow you to create outdoor steps that tick all the boxes. We've helped so many of our clients to expand their outdoor living space with additional tiers and levels, and we're sure that your garden (no matter how big or small) could benefit from some outdoor steps too.

Looks Good

One of the main reasons that our clients choose us over other composite decking suppliers is that we offer products that look and feel just like real wood. People often worry that composite decking will have a plastic/fake appearance, and this can definitely be the case with cheaper boards. We make sure that all of our composite decking ranges, whether you choose Edge, Edge+ or Reserve, are designed to high standards, so your finished outdoor steps will be the envy of your visitors and neighbours alike!

Lasts a Long Time

If you go to the trouble of redesigning your garden so that it includes some attractive outdoor steps, then the last thing you want is for it to be ruined in a matter of years. All of our composite decking ranges come with a 25 or 30-year warranty, so you can rest assured that you can take full advantage of your new garden steps years to come. The reason our composite decking is so durable is that it features a polymer sleeve. This sleeve protects the inner composite core from water ingress, stains and general outdoor wear and tear. 

Maximum Safety

We pride ourselves on offering slip-resistant composite decking that's perfect for creating outdoor steps. Our decking takes on less than 1.2% of surface water, so it's much less likely to end up developing mould, or ice - both of which can be a real slip hazard on outdoor steps. Even on rainy days, you shouldn't have to worry about the boards getting wet and slippery. Composite decking dries very quickly (within 30 minutes), so even when the British weather catches you out, your outdoor steps will be perfectly fine to use.

To help you move up and down your new outdoor steps, day or night, we recommend installing some deck lights. These are fitted flush to your outdoor steps (removing another trip hazard), and come in a range of colours.

Learn more about deck lights >

We honestly do believe that composite decking is the best material for outdoor steps. It's far more durable than timber boards, it looks beautiful and it will last you a lifetime. To find out more about our composite decking products, give us a call on 029 2080 3756.

easyclean reserve storm grey

When you decide to add a deck to your garden, it's not a decision that you take lightly. There's planning, installation and maintenance to think about before you embark on your garden renovation. After all, you want to make sure that the decking you choose isn't going to need ripping up and replacing in only a few years time!

One of the main reasons that homeowners choose TimberTech composite decking is because it lasts so much longer than traditional timber boards. Where wood is susceptible to rot, water damage, splitting and splintering (not to mention the hours of maintenance it demands), composite decking has a polymer sleeve which eliminates all these problems!

So how long will composite decking last? Let's take a closer look at some of our different ranges to give you an idea of the lifespan:

EasyClean Edge & Edge+

EasyClean Edge & EasyClean Edge+: 25 years!

If you're on the market for an affordable composite decking option, EasyClean Edge and Edge+ are great choices. Both ranges boast a contemporary grey and a traditional brown shade option, as well as a natural wood texture that you're sure to love. Edge boards come in a striking Maritime Grey or Dark Teak shade, while Edge+ boards come in a luxurious Sea Salt Grey (shown above) or Oak finish. 

These two wonderful ranges are designed to last you a quarter of a century, that's right, a full 25 years of composite decking glory! With a life expectancy that long, you'll be loving and using your deck from the day your kids are born until long after they move out... fingers crossed.

EasyClean Reserve

EasyClean Reserve: 30 years!

Our longest-lasting composite decking is the reserve range - it really is hard to beat. With an understated matte finish, a rough wood-effect finish and 3 different colours to choose from, this really is the crème de la crème of composite decking.

We put this decking's impressive durability down to its 4-sided polymer cap. This cap helps to prevent fading, rot, splitting and staining and means you won't find yourself spending hours maintaining your new deck. Choose from one of three gorgeous shades, Storm Grey, Driftwood or Dark Roast (shown above). We love it, and we think you will too!

So, now you can see how long composite decking lasts, you can make your purchase with confidence. Get in touch with our team if you're interested in ordering some of our long-lasting composite deck boards. 

Grey deck in back garden with dining set

When you make improvements to your property, you increase its potential resale value, meaning that you'll be able to ask a higher price for it should you ever decide to sell.

Building an extension is a popular way to boost home value, but there are also plenty of things you can do in the garden to make your property more desirable.


There's a common misconception that composite decking has a 'plastic' or 'fake' appearance. Back when composite decking first appeared on the market, this might have been true, but now we have manufacturing tools that allow us to create composite deck boards with all the character and charm of real wood. 

One of the many drawbacks of choosing the real thing is that it actually loses its beauty over time because it's easily weathered. (Take a look at the comparison image above if you don't believe us!)For that reason, you're actually better off choosing composite decking if you want to keep a real wood look for longer than a few years. Unlike real wood, composite decking doesn't need to be sanded, stained or sealed to keep it looking fresh.


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