Pressure Washing Cost by Surface Type: Concrete, Timber, Render, Roofs and Pavers Compared

Pressure washing quotes only look simple when the surface is simple. The same operator who can clean a plain concrete driveway cheaply may need a slower, more expensive soft-wash setup for rendered walls, roof tiles, painted cladding, or older timber decking. That is why surface type matters so much more than a broad "house wash" headline.

Typical Pressure Washing Cost by Surface Type

Surface	Typical range	Common pricing unit	Main cost risk
Concrete driveway	$150-$350	Per driveway or m²	Oil, tyre marks, moss
Pavers and paths	$8-$18/m²	Per m²	Joint sand loss and staining
Timber deck	$100-$300	Per deck or m²	Raised grain from over-pressure
Rendered walls	$250-$700	Per facade or house side	Soft-wash chemistry and mould
Roof cleaning	$300-$900	Per roof	Height, moss, tile fragility
Pool surrounds	$150-$400	Per area	Slip-risk algae and access

Why Concrete Is Usually the Cheapest Surface

Concrete driveways and plain paths are the easiest jobs to price. They tolerate higher pressure, need less hand-detailing, and do not usually require chemical-sensitive washing techniques. That does not mean every driveway clean is cheap. Heavy oil, rust, tyre staining, and north-facing moss growth can add chemical dwell time and multiple passes, which is why one driveway clean lands at $180 and another ends up above $300.

Driveways also benefit from straightforward access. If the operator can park close, connect to water quickly, and work without protecting delicate finishes, the job stays efficient. Once the driveway sits behind tight gates, slopes sharply, or includes decorative exposed aggregate that needs more care, pricing moves higher.

Pavers Look Simple but Carry Hidden Variables

Pavers are often sold as a routine wash job, but they create a different set of risks. Weed growth, moss, food staining, and joint contamination can make the clean slower than concrete. The real pricing issue is what happens after the wash. If the joints need re-sanding or the owner wants sealing, that is no longer just a wash quote. It becomes a presentation and maintenance package.

This is why paver jobs often compare badly when one quote includes only washing and another includes joint re-sanding or a follow-up seal. Ask whether the operator expects sand loss and whether they are pricing a bare clean or a full reset.

Timber Decks Need Lower Pressure and More Judgment

Timber is where cheap pressure washing can become expensive quickly. Operators should be using lower pressure, wider fan settings, and more patience than they would on concrete. A deck wash that is too aggressive leaves raised grain, splintering, striping, and extra sanding before oiling or staining. That means the best deck-wash quote is rarely the fastest one.

Deck pricing also rises when the wash is only part of a larger prep sequence. If the owner wants mould removal, tannin staining addressed, and a clean surface ready for oil or stain, the labour is different from a quick appearance-only rinse. In shaded suburbs with persistent mildew, post-wash treatment can also be worth pricing.

Rendered Walls Are Usually a Soft-Wash Job

Rendered walls sit in the difficult middle ground: visually dirty enough to need attention, but too delicate for hard pressure cleaning. Most good operators treat render as a chemical and low-pressure soft-wash task. That means solution mix, dwell time, controlled rinse, and protection of nearby paint, windows, and landscaping matter more than raw washing speed.

Quotes climb when mould is embedded, access is awkward, or the facade is tall. This is common in coastal and humid suburbs where owners think they need a standard pressure wash, when what they really need is a slower mould-removal process. If you are comparing render quotes, confirm the method. High pressure on render is not a bargain.

Roof Cleaning Has the Widest Price Spread

Roof washing prices vary because roof risk varies. Single-storey concrete tile roofs with moderate growth are one thing. Multi-level roofs, fragile tiles, steep pitch, lichen-heavy surfaces, and access equipment are another. Operators also differ on whether they include a post-treatment biocide that slows regrowth. Without that detail, two roof-clean quotes can look comparable when they are not.

Roof cleaning is also one of the clearest examples of where technique matters more than headline pressure. Soft washing with treatment often produces a better long-term result than a faster, harder clean. Owners who compare only the upfront number often end up paying again sooner because regrowth was never treated properly the first time.

How to Compare Surface-Specific Quotes Properly

• Ask the operator to state the method: full pressure wash, low-pressure wash, or soft wash.
• Ask whether chemicals, mould treatment, or post-treatment are included.
• Ask what protection is allowed for timber, render, painted cladding, and roof materials.
• Ask whether sealing, re-sanding, or prep-for-painting is part of the scope or extra.

How We Collect These Prices

WhatCosts compares real quote patterns across pressure washing jobs by surface type so owners can separate simple hard-surface cleaning from the slower, riskier work involved in timber, render, and roofs. We group pricing by technique, contamination, and access rather than assuming every wash job behaves the same.

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