Decking materials compared

Best value

Pressure-treated pine

Cheapest to buy, easiest to work, and every board is replaceable for the price of a board.

Longest life

Ipe

Extremely dense and naturally durable. It outlives the frame it sits on if the frame is not detailed as well.

Lowest maintenance

Capped composite

Washing, and that is the list. No sanding, no stripping, no recoating cycle.

Pencil sketch of four decking board samples fanned on a bench
Four decking board samples fanned out on the bench.

Side by side

Our pick — Cedar

Decking materials compared — comparison matrix
CriterionTreated pineCedarCompositeIpe
Rots if detailed badlyHeartwood resistsVery resistant
Splinters as it weathersLess
Can be sanded and refinished
Needs a finish to look goodOptional — silvers evenlyOnly for colour
Pre-drilling requiredPer system
Hard on saw bladesModerate
Hot underfoot in full sunLessLessMoreModerate
Own joist-spacing rule
Single board replaceable to matchIf still made
Weight to handleHeavy when wetLightHeavyVery heavy

Treated pine

The default. Cheapest, universally available, easy to cut and fix — and the one that most rewards a finish it will probably not get.

Costlowest
Workabilityeasy
Movementhigh
Upkeeprecurring
Barefootsplinters later

Cedar

The best-behaved wood. Stable, light, pleasant to work and to walk on. Grade decides everything — sapwood is not durable.

Costmid
Workabilityeasy
Movementlow
Upkeeprecurring
Barefootgood

Composite

Not wood and does not behave like it. No rot, no splinters, no finish — and no sanding out a scratch either.

Costhigh
Workabilityown rules
Movementthermal
Upkeepwashing
Barefoothot in sun

Ipe

Very dense tropical hardwood. Superb durability and a serious install — pre-drilling everything, and tools that wear out doing it.

Costhighest
Workabilityhard
Movementlow
Upkeepoil for colour
Barefootvery good

Four materials, three different questions

These are not four points on one scale. Treated pine and cedar are wood and behave like wood — they move, they weather, they can be sanded and refinished, and they want a finish on a cycle. Composite is a manufactured board that trades repairability for the maintenance cycle. Ipe is wood that behaves almost like a mineral: superb outdoors, punishing to install.

So the choice is not "which is best" but which trade you want to live with: cost now, effort later, or effort during the build.

What the table cannot tell you

Price. Deliberately absent. Decking prices move by season and vary sharply by region, and the gaps between these four move with them. A number typed here would be wrong somewhere and stale everywhere. Get four quotes on the same board count from your own yard — the board calculator gives you the count to quote.

Service life. Also absent, and for a better reason: it is not a property of the material. The same cedar deck lasts decades detailed well in a dry climate and fails in years detailed badly under trees. Detailing and drainage beat material — that is the whole argument of how long does a deck last.

Prices move weekly and by region. Enter the unit price your yard quoted you — the defaults are round placeholders, not a market average.

The install differences that surprise people

Composite has its own rulebook. Maximum joist spacing, expansion gaps at butt joints and ends, approved fasteners — all specified by the manufacturer and all conditions of the warranty. It also expands and contracts with temperature rather than moisture, so the gapping rules are unlike wood's.

Ipe is a different trade. It is dense enough that almost every fastener needs pre-drilling and countersinking, blades dull quickly, and the boards are heavy. A deck that takes a weekend in pine can take several days in ipe, and that is the real cost people underestimate.

Treated pine arrives wet. It shrinks and can twist as it dries, so gap it accordingly and expect to reset a fastener or two in the first year.

A quick way to decide

Budget is the constraint → treated pine, and spend the difference on detailing the frame properly.

You want wood and will look after it → cedar. It is the nicest wood deck to build, to walk on and to maintain.

You will not look after it → composite. Be honest about this; it is the most useful piece of self-knowledge in the whole decision.

You want the deck to be the thing → ipe, with the install time and the oiling ritual understood up front.

Before you buy

  • Get physical samples and leave them outside for a week. Colour, texture and surface temperature are decided by touch, not by a screen.
  • For any wood, ask about GRADE, not just species — cedar sapwood and low-grade pine are different products from what the comparison assumes.
  • For composite, read the installation instruction for joist spacing, expansion gaps and fastener type BEFORE framing.
  • For ipe, budget for pre-drilling every fastener, extra blades, and a longer install. The labour difference is real.
  • Price all four over YOUR deck at YOUR yard. The gaps between them vary hugely by region and season.

Sources

Nothing here is asserted as a current figure. This page compares properties and trade-offs, and says how to get your own number where a price would have gone.

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