Decking
Timber decking or composite decking: which suits your garden?
The visible board matters, but drainage, ventilation, subframe and edge details determine whether either deck performs well.
Start below the boards
A deck is a small outdoor structure, not simply a surface laid over the garden. The base, supports, joist spacing, ventilation, drainage and separation from the building all affect performance.
Premium boards on an unsuitable frame will not create a premium result. Ask what subframe and fixing system are included in the quotation.
Timber decking
Timber has a natural grain and can be cut, detailed and repaired using familiar construction methods. Its colour changes outdoors and it can be cleaned and refinished over time.
Maintenance depends on the timber and finish. Leaves, shade and standing moisture should be managed, and coatings need following according to the selected product.
Composite decking
Composite boards provide a controlled profile and colour range with no routine painting or staining. Hidden fixing systems can create a clean surface, and matching trims help finish exposed edges.
Boards expand, drain and span according to the manufacturer’s system. Joist spacing, end gaps, ventilation and colour-related heat should be considered during design rather than after installation.
Choose for the way the space will be used
Consider dining furniture, play, planters, steps, shaded areas and the route from the house. Ask to see completed projects in similar colours and light conditions.
The right decision is rarely “which board lasts longest?” in isolation. It is which complete deck can be installed correctly on your site and maintained in a way that suits the household.
Common questions
Questions this guide often raises.
01Is composite decking slippery?
02Does composite decking get hot?
03Can composite boards go over an old timber frame?
Related installation services
Keep planning
Related practical guides.
What affects the cost of decking installation?
Deck area alone does not define the price. A low platform on open ground is different from a raised deck with steps and finished edges.
Read the guide
How to plan decking around doors, drainage and garden levels
Good deck design starts with water and access. Finished board level should never be chosen before the surrounding thresholds are understood.
Read the guide
Does garden decking need planning permission?
Many low domestic decks are permitted development, but height, coverage, listed status and local restrictions can change the position.
Read the guide