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Materials · PVC decking

PVC decks

PVC decking is made entirely of plastic, with no wood fibre at all. That makes it the most moisture-resistant board you can buy and one of the longest-lasting, which suits shady, damp yards. It's also the most expensive common option, usually 15 to 30 percent more than mid-range composite.

Installed
$75–120 per sq ft installed
Lifespan here
About 30–50 years
Upkeep
Wash now and then
Upkeep cost
About $0–150 a year

Common brands: TimberTech AZEK and others

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Pros

What it does well

  • No wood content for mould to feed on
  • Very high moisture resistance
  • Long warranties
  • Lighter than composite

Cons

What to weigh up

  • The most expensive common board
  • Expands and contracts more with heat
  • Fewer budget lines to choose from
  • The frame underneath is still wood
Best for: Shady or damp decks, and owners who want the longest life

In our climate

Best on the dampest decks

Where a deck sits under trees, close to the ground or on the north side of the house, PVC's lack of wood content is a real advantage. It doesn't take on water at all.

Like composite, it needs the right joist spacing and gapping for expansion, and it still sits on a wood frame that needs protecting. Ask your builder which product lines suit your exposure and colour choice.

Rough budget

A 300 sq ft low pvc deck

Installed
$22,500 – $36,000
10 years of upkeep
$0 – $1,500
10-year total
$22,500 – $37,500

Before railings, stairs, permits and GST. Raised decks cost more.

Price your own deck →

Questions

PVC decking questions

Is PVC decking better than composite?

It resists moisture better and can last longer, which suits damp, shady decks. It also costs more and moves more with heat. For most sunny decks, good composite is the better value.