Both capped composite decking and capped polymer are two options that you can use to floor your outdoor space. They are not like real wood that cannot stand the test of time. Also, unlike timber, they are maintenance-free, splinter-free, and highly durable. If you are new to outdoor decking, choosing between capped composite and capped polymer can be difficult. In the end, you must select what works best for your flooring needs and your budget. This write-up addresses the difference between capped composite vs capped polymer. 

What Is Capped Composite Decking?

Capped composite decking is an outdoor flooring material that is made from wood dust and plastic. The inner core of the capped composite contains wood and plastic. As the caps in the name suggest, the plastic covers the decking boards’ surface to protect them from moisture. 

Another name for capped composite is wood-plastic decking. This flooring material is stronger and more durable than timber which is one of its constituent materials. Makers of capped composite decking make it in a factory where the materials are heated and bonded with an adhesive till they form composite boards. 

What Is Capped Polymer?

Like capped composite decking, a capped polymer is a synthetic material. But unlike capped composite, capped polymer does not contain wood dust as its component. The inner core of the capped polymer does not contain wood. Capped polymer or PVC is made of 100% plastic in a factor where they mix the materials till they form plastic decking boards.

 PVC decking is more durable than its wooden counterpart and will last longer when you install it outdoors. So, how do you comprehend which is better between capped composite and capped polymer? Let’s start by looking at the attributes of capped composite vs capped polymer. 

Aesthetic Value

Aesthetic value is one thing that distinguishes capped composite from capped polymer. If you are a decking owner that cares about beautiful decking, you should carefully select between capped composite decking vs capped polymer. Are you planning a contemporary decking in your garden, then you should consider capped composite decking for the project. This decking type has various attractive colours. 

Capped composite decking installed in a home

You can select between dark-coloured and light-coloured capped composite decking. There are dark-grey, dark-grey, grey, brown, oak composite boards. Aside from that, there is the matte-finished or the wood-grain composite boards. This kind of composite board is particularly appealing to homeowners that love timber decking material. Remember that timber decking has its disadvantage in that it will not last long and that the colour will fade quickly. Capped composite is the right replacement for timber. 

The colour of capped composite will not fade quickly like wood. Capped polymer is similar to capped composite in that it has attractive colours too. You can get brown, grey, and oak capped polymer for your outdoor project. But capped polymer does not come with the wood-grain or matte finishes. This is one setback of capped polymer, which gives capped composite an edge over it. 

Heat Absorbing Property

The heat-absorbing property of decking is what you should consider before you install it. Capped polymer does not absorb much heat like composite decking. The plastic surface of the capped polymer will reflect heat better when the sun shines on it. Dark colour capped composite will absorb heat better than light colour ones. So, if you dwell where the temperature fluctuates, you should install light-coloured capped compositor like light grey and brown. This decking type will reflect heat better than dark-grey or dark-brown. 

Water Resistant Property

Both capped composite and capped polymers have good water-resistant properties that make them different from wood. The capped surface of composite decking and PVC will prevent moisture from entering the boards. This will prevent rot, decay or splintering. Both capped composite and capped polymer score high when you compare their water-resistant properties. 


Most homeowners will say that polymer will last longer than composite decking. But that is wrong because capped composite will last longer than polymer. As a composite material, composite decking is stronger than plastics and wood. It will stand against rot, swelling, moisture, and changing temperature. This makes it last for as long as 25 years before it shows signs of wear. Capped polymers will not last that long. 


Comparing capped composite decking vs capped polymer will bring their properties to light. Both of them are good, but capped composite is better than polymer. 

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