Perth’s climate has a bigger part to play in this decision than it may seem.
A comparison that makes sense in Melbourne or Sydney doesn’t necessarily translate here. In Perth outdoor surfaces spend months at a time in direct sun and families are outside for the better part of the year.
At gardenspec.com.au we’ve been installing paving across Perth’s western and northern suburbs for over 15 years.
The paving versus decking question comes up constantly and our answer is usually the same.
For most exposed outdoor areas in Perth, paving holds up better, costs less to maintain over time and is a more comfortable surface to actually live on through summer.
That’s what the evidence tells us after years of seeing both materials perform in Perth conditions.
Now don’t jump ahead too quickly because there are definitely situations where decking is the right call.
But if the question is which material serves a typical Perth alfresco or patio better over the long term.
The Heat Question
This is where Perth separates itself from the rest of the country and it’s the factor that gets glossed over most often in generic comparisons.
Timber decking absorbs heat. On a hot Perth afternoon a timber deck in direct sun can reach temperatures that are painful underfoot. If you have kids running around, or you yourself dont mind walking around outside barefoot, then this is a factor to consider.
Composite decking is often worse. The plastic content in composite boards holds heat longer than timber and releases it slowly, which means the surface can stay hot into the evening. If you a person that always wears shoes outside no matter the situation, then this factor probably doesn’t affect you at all.
But anyone who has watched children or a dog hesitate at the edge of a composite deck on a January afternoon knows exactly what this looks like in practice.
Natural stone behaves differently. Light coloured limestone and travertine reflect radiant heat rather than holding it and the surface temperature difference on a 38 degree day is noticeable.
Perth’s summers run hard from October through to April and for any outdoor area sitting in full sun through that period, the material you choose to walk across barefoot every day matters more than it might seem when you’re making the decision in winter.
Darker paving tones absorb more heat than lighter stone, so colour selection is also something worth thinking about.
What Maintenance Looks Like Over 10 Years
Treated pine decking needs oiling or staining every one to two years. Without it the timber greys, cracks and splinters. This process is accelerated by Perths UV, and if you live by the sea then the coastal salt air adds another layer.
Hardwood options like jarrah and merbau are far more durable, but still need regular oiling.
Composite decking removes the oiling requirement. The only downside is that the harsh UV can fade the colour. It should alos be carefully watched in shaded or damp areas as mould can devlop.
Natural stone paving properly installed and sealed needs a wash down a couple of times a year and a reseal every three to five years.
A limestone patio that’s resealed on a reasonable schedule looks much the same at year fifteen as it did when it was laid.
Over a ten to fifteen year period the total cost of maintaining a paved surface is consistently lower than maintaining a deck.
The upfront investment for paving is sometimes higher depending on the material and area, but the ongoing cost difference more than compensates for that over time.
How Long Each One Lasts
Natural stone paving on a proper sub-base lasts decades in Perth conditions. Limestone and travertine installations done correctly regularly hold up for 25 to 30 years without structural problems.
When paving fails it’s almost always a sub base issue rather than the stone itself.
Treated pine with consistent maintenance might last 15 years before boards need meaningful replacement. Hardwood performs better but at a higher cost from the outset.
The Cost Comparison Done Honestly
Entry level treated pine decking costs less to install than most natural stone paving.
But treated pine needs the most ongoing attention of any decking option and has the shortest lifespan of the common choices. So its worth considering whether the upfront price or maintence price will impact you more.
Mid-range limestone paving and mid-range composite decking are closer in upfront cost than most homeowners expect.
Getting quotes for both options before assuming one is more expensive is worth doing because the difference is frequently smaller than the assumption.
Bushfire Ratings – Worth a Check
For properties in bushfire prone areas of Western Australia, Bushfire Attack Level ratings affect what materials can be used.
Timber decking is restricted or prohibited at higher BAL ratings.
Paving is non-combustible and carries no equivalent restrictions.
If your property has a BAL rating this is worth confirming early in the planning process rather than after decisions have been made.
Where Decking Is the Right Choice
When the ground level changes significantly, decking is often the more practical and cost effective solution.
Building a raised deck over a slope is considerably simpler than excavating and retaining for a level paved area and the cost difference in that scenario can be substantial.
Decking also works well alongside paving rather than as a replacement for it.
A timber section next to a paved entertaining area around a firepit or as a transition between levels brings a material warmth that stone alone doesn’t provide and the combination can work very well when the levels are properly considered.
Covered outdoor areas change the calculation too. Timber protected from direct UV and rain lasts longer and performs better than timber in full exposure.
A covered alfresco with quality hardwood decking is a genuinely good outcome and the heat issue matters less when the sun isn’t hitting the surface directly.
Where Paving Is the Right Choice
Exposed outdoor areas in Perth’s climate suit paving better in most situations.
Pool surrounds, open patios, driveways and entertaining areas that sit in full sun through summer benefit from the heat reflection and durability of natural stone.
Around pools paving is almost always the stronger option. The heat issue is more pronounced when children and pets are moving between the water and the surrounding surface, and natural stone in a tumbled or brushed finish provides better grip in wet conditions than most decking alternatives.
For households that want a good looking outdoor space without a significant ongoing maintenance commitment, paving is the lower effort option.
What We See at Garden Spec
After 15 years on the ground across Perth’s western and northern suburbs, the most common job we get called in for is replacing a deck with paving.
The heat and maintenance reality of timber and composite in our climate becomes clear after a few summers and the cost of replacement is almost always higher than installing paving from the start would have been.
Decking is not the wrong choice in every situation.
But in Perth the conditions that favour paving come up more often than the conditions that favour decking and that’s reflected in what we see homeowners actually choosing when they’re doing it for the second time.
Our limestone paving page is a good starting point if natural stone is the direction you’re considering.
Common Questions
Is paving cheaper than decking in Perth?
Entry level treated pine decking costs less upfront than most natural stone paving. Over a ten to fifteen year period when maintenance and replacement costs are included, paving is typically the more cost effective option.
Which is better for a Perth pool surround?
Paving. Natural stone stays cooler underfoot and provides better grip in wet conditions than timber or composite decking. For pool surrounds in Perth’s climate paving is the stronger choice in almost every situation.
How long does paving last compared to decking?
Properly installed natural stone paving typically lasts 25 to 30 years or more in Perth’s climate.
Treated pine decking with consistent maintenance might reach 15 years before boards need significant replacement. Hardwood performs better.
Does decking get too hot in Perth summers?
Composite decking in direct sun can reach temperatures that are uncomfortable and sometimes unusable underfoot on a hot Perth afternoon.
It’s one of the most consistent things we hear from homeowners who have composite in exposed outdoor areas. Light coloured natural stone stays considerably cooler in the same conditions.
Can you mix paving and decking?
Yes and it can work very well. A paved area with a timber section around a firepit or at a level transition brings material warmth that stone alone doesn’t have.
Thinking About Paving for Your Perth Outdoor Area?
If you’re in the planning stage and are interested in what’s going to work best for your specific space, we’re happy to come out and take a look.
Garden Spec works across Perth’s western and northern suburbs and we know the conditions and the materials well.
