Who this guide is for
- Owners choosing decking for a yard or patio.
- Households weighing maintenance against looks and feel.
- Anyone briefing a landscaper or builder on decking options.
Wood
Timber decking offers a natural look and feel that many prefer. It weathers and needs periodic maintenance — cleaning, treating or refinishing — that varies by species, and its longevity depends on detailing and exposure.
Composite
Composite boards combine wood fibre and polymers and are often chosen for lower upkeep than timber. Products vary widely in look, feel and heat in sun, so compare specific ranges and follow manufacturer guidance.
Metal supports
The structure beneath the boards — joists, posts and fixings — carries the load and decides the deck's safety and lifespan. Metal and treated-timber support systems each have detailing and corrosion considerations that are professional decisions.
Maintenance
Maintenance is a major differentiator: timber generally needs more regular care than composite, but composite is not maintenance-free. Choose for the upkeep you will actually do.
Moisture
Decking lives outdoors, so moisture handling — drainage, ventilation beneath the boards and gaps for water to escape — matters for longevity. These are details for the builder to get right.
Surface comfort and shade and exposure
How a board feels underfoot, including heat in direct sun, varies by material and colour. Shade, orientation and exposure affect both comfort and how the surface weathers, so factor in where the deck sits.
Professional review
Because decking is a load-bearing structure, design and construction should be carried out by qualified professionals to suit the site and loads. This page is for planning, not construction.
Decking material comparison checklist
- 1Decide the maintenance you are realistically willing to do.
- 2Compare specific composite ranges, not the category alone.
- 3Consider surface heat and comfort for sun exposure.
- 4Factor in shade, orientation and exposure at your site.
- 5Treat the supporting structure as a professional, load-bearing decision.
- 6Plan for moisture handling and ventilation beneath the boards.
- 7Weigh look and feel alongside upkeep.
- 8Confirm material suitability with a supplier.
- 9Have design and construction done by professionals.
- 10Confirm any permit requirements locally.
Common mistakes to avoid
- Choosing boards on looks and ignoring upkeep.
- Assuming composite is entirely maintenance-free.
- Overlooking heat underfoot in direct sun.
- Treating the support structure as an afterthought.
- Ignoring moisture handling beneath the boards.
- Building a load-bearing deck without professional design.
When to involve a professional
- Decking is a load-bearing structure — design and construction are professional work.
- Support systems and fixings should suit the site, loads and corrosion exposure.
- Moisture handling and ventilation beneath the deck should be detailed by the builder.
- Performance, lifespans and costs vary by product, installation and exposure.
- This page is an educational planning aid; it does not provide construction instructions.
Material reference
Decking material references
Material close-ups shown only as planning inspiration for decking direction. They are not construction documentation and not a representation of any real Build Design Hub project.
Visual references are educational planning inspiration. They are not construction drawings, not architectural documentation and not a representation of a real Build Design Hub project.
Frequently asked questions
Questions readers ask about this topic
Is composite or wood decking better?
Neither is universally better. Timber offers a natural feel with more upkeep; composite trades that for generally lower maintenance, though it is not maintenance-free. Compare specific products for your site and habits.
Does composite decking get hot in the sun?
It can, depending on the product and colour, as can some timber. Consider surface heat and shade for where the deck sits, and compare specific ranges.
Can I build a deck myself?
A deck is a load-bearing structure, so design and construction should be carried out by qualified professionals to suit your site and loads. This guide covers planning the material choice, not building.
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