Deck Maintenance Cost in Perth — Annual Costs by Material Type | Endure Decks

What you'll actually spend keeping a Perth deck working, year on year. The Equisol oiling cycle on a real schedule, what composite asks for (and what it doesn't), and when maintenance crosses over into restoration.

Endure Decks — Perth deck builders · Updated 28 May 2026

Two very different stories depending on what your deck is made of.

A timber deck wants real maintenance. A proper oiling cycle costs roughly $300–$600 a year if you handle it yourself with the right product, or — through a service like DeckCare — sits on a per-m² rate (see the four-tier section below for indicative bands). Skip the maintenance and the timber goes silver, loses surface protection and works its way toward a sand-and-restore job that costs more than the years of small annual outlays you skipped. Skipping maintenance is the most expensive thing you can do to a timber deck.

A composite deck wants almost nothing. A wash with mild detergent twice a year, an occasional fastener check — call it $0–$150 a year in materials and an hour or two of your time. That's the maintenance trade-off composite buys with its higher initial cost. Across 15 years, composite saves you several thousand dollars in maintenance spend; on the flip side, the boards cost more on day one.

When timber maintenance has been deferred long enough, it crosses over from oiling into restoration — sand the deck back, re-finish the surface, replace any fixings or boards that have gone too far. A sand-and-re-oil through DeckCare on a typical Perth deck runs $1,500–$3,500. Below that point you're still in maintenance; above it, you're approaching re-decking territory (re-decking cost guide here).

The honest planning frame: think of timber maintenance as a small annual line you should expect, not a surprise.

A timber deck and a composite deck don't need the same things from you to keep going. The materials are different, the failure modes are different, and the maintenance schedules look almost nothing alike.

Timber needs ongoing surface protection. Timber is a natural material under Perth's UV, heat and rain. Left alone, it weathers. The colour goes silver-grey within a couple of years. The surface dries out, loses its sealed top layer, and starts to crack and splinter at the edges over a longer timeframe. None of that is a deck failing — it's just timber doing what timber does without protection. The job of maintenance on a timber deck is to slow the weathering and keep the surface sealed.

Composite needs occasional cleaning, not protection. Composite boards don't weather the way timber does — they're capped, UV-stabilised, engineered for it. They don't need an oil. What they do need is the surface kept clean (a wash twice a year removes pollen, dust, leaf debris that can cause surface staining over years) and the fixings checked at the same intervals every quality deck wants checking. That's it.

Most of the rest of this article is about timber, because that's where the maintenance money goes. The composite section is short because composite's whole pitch is that it isn't.

Every timber deck we hand over carries the same maintenance approach: we only use Equisol, and the schedule runs off a visible signal, not a calendar.

The cycle. Equisol is a penetrating oil — it conditions the timber from the inside, repels water, and doesn't form a film on top the way coatings do. When the oil is working, water beads off the deck and runs. When it stops working, water absorbs into the timber and the surface starts looking dry. That's the signal to recoat. Most Perth hardwood decks need a recoat every 12–18 months for the best result — sometimes a little longer on covered or low-exposure decks, sometimes a touch sooner on full-sun decks in coastal air.

What an annual oil involves. Clean the deck (a hose, a stiff broom, sometimes a mild detergent for trafficked sections), let it dry properly, then apply two coats of Equisol with a roller or brush — typically half a day of work on a deck of 30 m² or so. Equisol is sold in 4-litre tins; one tin covers roughly 20–25 m² per coat depending on how thirsty the timber is, so a typical Perth deck takes one or two tins per cycle.

DIY cost. Materials per cycle on a typical Perth deck land at $80–$160 depending on size, plus your half-day. Across a year (one cycle, usually) the materials run $80–$160. Stretched across multiple cycles for older or larger decks, $160–$300 in materials a year.

Via DeckCare cost. Endure runs a productised maintenance line — yearly clean and oil, on the schedule, by the same crew that built the deck. Pricing is per square metre of deck, not per tin of oil. On the indicative bands below, a typical 30 m² Perth deck on Maintain lands around $1,200–$1,800 a year — a kept-up Refresh job sits lower at $900–$1,200 on the same deck. See the four-tier section below for the full bands (and the caveat that tier pricing is still firming up).

Why through DeckCare rather than DIY. Two practical reasons. Time — most homeowners under-estimate how long a proper clean-prep-and-oil takes on a 30 m² deck. The four hours you budget become a Saturday. Product knowledge — most Perth bunnings-bought oils are coatings, not penetrating oils. Used on a hardwood deck they look fine for six months then start to flake. Using the wrong product is worse than not oiling at all because the failing coating has to be removed before the timber can be re-protected properly — and that's a sand-and-restore job. (More on that below.)

Endure's DeckCare service has four tiers, each with a specific job. The per-square-metre rates below are indicative bands — not yet finalised. The tiers and inclusions are locked; the exact pricing will firm up as DeckCare scales. Pricing is per m² of deck, not per tin of oil — a common misread on maintenance quotes.

• Refresh — the lightest tier. A clean and oil on a deck that's been kept up well. The annual maintenance default for most Endure-built decks. Indicative band: $30–$40 per m².
• Maintain — the recurring, locked-in version of the service. Year-on-year scheduled maintenance with the same crew. One scheduled visit per year. Indicative band: $40–$60 per m².
• Restore — for decks that have missed a cycle or two and need a deeper prep before the new oil goes on. Indicative band: $80–$120 per m².
• Maintain+ — same per-m² rate as Maintain, but with an extra scheduled visit per year built in (so two visits annually instead of one). The right call for decks in tougher conditions — full-sun coastal, heavy traffic, near a pool — where one annual visit isn't quite enough to keep the surface ahead of the weather.

The tiers map to the condition of the deck, not just the size. A neglected 30 m² deck might land in Restore; a kept-up 60 m² deck might still land in Refresh. The site visit is what decides which tier.

Where sanding sits. If a deck has weathered far enough that a sand-back is part of the prep, that's not a Refresh — it's effectively a Restore, and it's priced POA (price on application). A working reference frame: sander hire runs around $200 a day, and a day's work for one person on the tool costs roughly $800 all-in (cost plus margin) for the sanding portion alone. That sits on top of the new oil and any board or fixing work the sand-back uncovers. Restore-tier jobs that include sanding move out of the indicative bands above and get a job-specific quote.

For new Endure builds, the first year of DeckCare Maintain is included on every timber deck handover — you don't have to remember the first oil; we'll be back at the 12-month mark to handle it.

A composite deck doesn't ask for oil. It doesn't need penetrating treatment, surface protection, or refinishing. What it does want is occasional housekeeping:

A wash twice a year. Hose, mild detergent (a household dishwashing liquid works), soft brush or broom, rinse. Removes pollen and dust that would otherwise show up as surface staining over years. Costs you $0–$15 in detergent and an hour each time.

A fastener check. Once a year, walk the deck and look for any board fixings that have worked loose, any loose joist hangers visible underneath, any signs of movement in the substructure. Most years this returns nothing; the few times it returns something, you've caught it early. Costs nothing if you do it; the DeckCare annual visit includes it for Endure-built composite decks.

Annual total. $0–$150 across a typical year — and a chunk of that is just detergent. The boards themselves are doing the heavy lifting under the manufacturer's 25-plus-year warranty.

The thing composite doesn't escape is the subframe. The boards on top don't rot, but the timber underneath them can — and a composite deck on a subframe that fails years before the boards do is a much shorter deck than the box says. Subframe maintenance is the same on a composite deck as it is on a timber one: built right, it asks for almost nothing; built cheap, it asks for everything. Detail in the substructure cost article.

Adding it up — what you'll actually spend on a Perth deck across the warranty window:

Two honest reads of that table.

Composite saves you several thousand dollars in maintenance. Across 15 years, the gap between composite and timber-via-DeckCare is meaningful. If the homeowner doesn't want to handle the timber maintenance themselves and would default to a service, composite is genuinely cheaper to own over the warranty window. That's the maintenance side of the timber-vs-composite decision the composite cost article walks alongside the up-front cost.

Timber owned properly is roughly cost-neutral with composite over 15 years if you DIY the maintenance. A merbau deck costs less up front and asks for $80–$300 a year of materials and a Saturday a year of time. If you'd rather not pay yourself a service rate for that work, the lifetime cost of a DIY-maintained timber deck is roughly in the same band as a composite deck. The choice between them comes down to look, feel, the time you want to give it, and how heavily you discount your own labour.

The fork that doesn't work is timber + neglected maintenance. Skip the cycle for five years on a timber deck and you cross from maintenance into restoration — and the cost-of-skipping is genuinely larger than the cost-of-doing across the same period.

A timber deck that has missed enough oil cycles eventually can't be maintained back to a finished surface with a normal recoat. The surface has weathered too far, the fibres have lifted, the colour has gone, and any oil applied to that surface goes straight in without doing anything useful. At that point you need a sand and re-finish — a restoration job, not a maintenance one.

What it involves: the deck gets sanded back to fresh timber across the full surface, any boards too far gone are replaced, fixings are checked and replaced where needed, and the deck is then oiled to the same standard as a new Endure handover. It's typically a 2–4 day job on a 25–30 m² deck.

What it costs: a sand-and-re-oil through DeckCare on a typical Perth deck lands in the $1,500–$3,500 band, varying with size, condition and how many boards or fixings need replacing. Above that figure, you're approaching territory where a re-deck is the better answer.

The math worth doing here: the cost of skipping five years of maintenance is roughly equal to or greater than the cumulative cost of doing the maintenance over the same five years. Maintenance compounds in your favour — small recurring spend that keeps the surface in working condition. Restoration compounds against you — a single large bill to recover what could have been protected with consistent small ones.

Beyond the numbers, what consistent maintenance buys is lifespan.

A merbau deck on a properly-built substructure, oiled to the Equisol schedule, comfortably clears 15 years and aims for 20+. The same deck without maintenance — same boards, same structure — starts looking sorry at year five and is heading into restoration territory by year eight. The difference between those two outcomes is genuinely small annual amounts of money and time, applied consistently.

It also buys you the surface you paid for. The colour you fell in love with on day one is held by the oil. Without it, the deck goes its natural silver-grey within two to three years and stays there. There's nothing wrong with the silvered look — plenty of Perth homeowners deliberately let merbau weather and like the result — but it's a choice that should be made deliberately, not by neglect.

One. What oil do you specify, and is the first oil included? A good answer names a specific product. We use Equisol because it's a penetrating oil that conditions the timber rather than coating it — and we include the first oil on every Endure timber build. A vague answer ("a quality decking oil") is information.

Two. Do you offer a recurring maintenance service? Many Perth deck builders hand the deck over and you never hear from them again. We run DeckCare as a productised line — same crew, scheduled visits, four tiers depending on the condition of the deck. The service exists because most decks don't fail from being built wrong; they fail from being abandoned.

Three. What does year-one look like? The first year of any new Endure timber deck includes a DeckCare visit at the 12-month mark — we come back, check fasteners, check the surface, and apply the first homeowner-year oil. You don't have to remember it; we will.

The full version of the framework is in the hub on Perth deck pricing.

How much does deck maintenance cost in Perth per year? Timber via DIY (Equisol cycle): $80–$300 in materials a year, plus your time. Timber via DeckCare is priced per square metre of deck — indicative bands by tier (not yet finalised): Refresh $30–$40/m², Maintain $40–$60/m², Maintain+ same per-m² as Maintain plus an extra annual visit, Restore $80–$120/m². Composite: $0–$150 a year in detergent and an hour twice a year.

Do composite decks need maintenance in Perth? Almost none. A wash with mild detergent twice a year removes pollen and dust; an annual fastener check catches anything before it becomes a problem. Composite boards don't oil, don't seal, don't refinish. That's the maintenance trade-off composite buys with its higher initial cost.

How often should I oil my timber deck in Perth? Watch the surface, not a calendar. When water stops beading off, or the deck starts looking a little dry — that's the signal. Most Perth hardwood decks need recoating every 12–18 months. Covered decks can stretch a little longer; full-sun coastal decks can need it sooner.

What's the difference between maintenance and restoration? Maintenance is the annual cycle — clean and oil to keep the surface protected. Restoration is the bigger sand-back job needed when the surface has weathered too far for an oil to grab — typically required after 4–6 years of skipped maintenance. A sand-and-re-oil through DeckCare runs $1,500–$3,500 on a typical Perth deck.

Is it cheaper to maintain a timber deck or own a composite one? Across 15 years: composite is meaningfully cheaper to maintain. Timber via DeckCare across that window adds up; timber via DIY is roughly cost-neutral with composite once you discount your own time. The choice between them comes down to look, the time you want to give it, and your tolerance for the maintenance rhythm.

What's included in DeckCare? DeckCare runs in four tiers — Refresh (annual clean and oil on a well-kept deck), Maintain (the recurring locked-in service, one scheduled visit a year), Restore (deeper prep after missed cycles, sometimes including sanding), Maintain+ (same per-m² rate as Maintain plus an extra annual visit, for decks in tougher conditions). Pricing is per square metre of deck, not per tin. The first year of Maintain is included on every new Endure timber deck. Tier pricing bands are indicative — see the article body for current figures.

What happens if I skip maintenance entirely? The deck weathers to silver-grey within two to three years; surface protection drops off; cracking, splintering and edge damage compound after about year five; and you're heading into restoration or re-decking territory inside a decade. Skipping maintenance is the most expensive thing you can do to a timber deck. The cumulative cost of recovery is generally larger than the cumulative cost of doing the work on schedule.

If you've got an Endure deck and you're wondering whether it's due for a service, or if you have an old deck you're not sure is past its best — book a site visit. We'll walk the deck, tell you whether it's still in maintenance territory or whether restoration is the honest answer, and give you a real number either way.

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