Spend over £100 (ex. VAT) for FREE Delivery

Customer Support 0800 22 77 77

Near You - Local Branches Nationwide

Hollow Vs Solid Composite Decking - What lies beneath?

Hollow Vs Solid Composite Decking - What lies beneath?

Wood composite decking is a high quality, long lasting, low maintenance alternative to timber, which is perfectly suited to every style of outside space. However, not all composite deck boards are the same and while many may look identical the quality below the surface may differ dramatically.

There are two main types of composite decking construction, hollow and solid, and whilst both have their merits, it’s important to be aware of what you’re buying and whether it’s the best choice for you.

Safe, sound, and solid

The first option is solid composite decking. Solid boards tend to be a higher quality than their hollow counter parts due to their increased strength. This combination of quality and solidity also means these composite deck boards have a longer life span and do not need to be replaced as often as hollow boards. Both our Reversible Ribbed or Grooved Composite Decking and Wood Effect Composite Decking ranges come with a 25-year warranty, demonstrating our belief in their quality and providing you with the peace of mind that you’ve bought a high-quality product.

Another advantage of solid wood composite boards is sound absorption. The polymers and wood fibres assist in dampening sound levels when the boards are walked on. This is compared to hollow boards which contain voids around which sound can resonate.

In addition to their strength and sound reducing properties, solid boards also allow for a far more flexible approach to installation, as installers do not need to worry about screw placement. This can help speed up installation as well as improve the finished look of the decking.

An economical choice

Hollow composite decking boards are a cheaper alternative to solid wood composite deck boards mainly due to the reduction in materials used. While this makes them lighter and easier to manoeuvre, it can compromise their structural integrity which results in a reduction in strength.

Although a less expensive option, hollow boards tend to be of a lower quality than solid composite boards. Also, once installed they have an exposed edge which can gather water and debris so it is imperative you keep this internal structure clear of rubbish as it can cause damage to the boards and shorten their lifespan – so if you’re looking to reduce your gardening maintenance jobs, this may not be the right choice for you!

Hollow or solid – choosing the best board for its situation

Both types of decking have their place. Hollow decking is less expensive, but it does have a shorter life expectancy, require more maintenance and can be noisy to walk on. Solid composite decking is more durable and long lasting - and although it is more expensive, it is an investment that will provide many years of repair free enjoyment.

If you’re still unsure if a solid wood composite decking board is the right choice for you, why not request a sample and see the quality for yourself?



National Plastics is a trading name of Specialist Building Products Limited, a wholly owned subsidiary of the Epwin Group Plc. Specialist Building Products Limited is registered in England & Wales. Company Registration number: 1268689. Registered Office: 1B Stratford Court, Cranmore Boulevard, Solihull, B90 4QT VAT Registration No. 864 4507 10