Composite decking costs more upfront but typically lasts two to three times longer than softwood timber and needs significantly less maintenance. Timber is cheaper to buy; however carries more maintenance costs, so the right choice depends on your budget, how long you plan to keep the deck and how much upkeep you are willing to do.
What is composite decking?
Composite decking combines wood fibre with recycled plastic. PlastixPlus supplies WPC, or wood plastic composite, and MBC, or mineral based composite, alongside premium options including Millboard, Deckorators and Triton. Boards may be capped or uncapped, which affects their appearance, durability and maintenance requirements.
What is timber decking?
Timber decking is usually pressure treated softwood in the UK, although hardwood options such as oak, balau and Ipe are also available. Softwood generally costs less upfront, while hardwood offers a different appearance and performance profile.
Composite vs timber decking: what are the key differences?
| Composite decking | Timber decking | |
| Upfront cost | Higher | Lower |
| Expected lifespan | Around 25 to 30+ years | Around 10 to 15 years for softwood |
| Maintenance | Sweep and wash | Clean, sand and re stain or oil |
| Rot, warp and splinters | Reduced risk | Can develop over time |
| Colour | May fade initially before settling | Weathers and greys without treatment |
| Installation | Standard tools and hidden fixings | Standard tools and simple cutting |
How much does composite decking cost compared to timber?
Composite costs more per square metre than softwood timber, but the total project cost also depends on joists, fixings, substructure and installation. Always compare supply only prices on a like for like basis.
How long does composite decking last compared to timber?
Composite decking can last around 25 to 30+ years, while softwood timber decking typically lasts around 10 to 15 years, depending on installation, drainage and maintenance.
Which works out cheaper over time?
Composite can become more economical over the life of the deck because it avoids repeated staining and earlier replacement. Timber may be the better choice for a tight upfront budget, temporary project or natural weathered appearance.
Does composite decking need maintenance?
Yes, but much less than timber. Sweep regularly, wash occasionally and keep the drainage gaps clear. Composite can still stain or develop algae in damp, shaded areas.
Is composite decking worth the extra cost?
For long term homes, rental properties and anyone who wants less maintenance, composite can justify its higher initial cost. PlastixPlus supplies Millboard, Storm Triton, Ronjack and Dex decking.
See full size displays at our showroom before you buy. Call the trade counter for a quantity take off, substructure advice and trade pricing.
