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The Prestige Standard Northern Beaches · Clontarf 2093

Sandstone Cleaning in Clontarf

Low-pressure biocide cleaning for Hawkesbury sandstone walls, steps and terraces, so the black lichen goes and the stone's skin stays. For Clontarf homes, on our Manly and harbourside run most weeks.

Price on request · Clontarf 2093 · Manly and harbourside
Sandstone Cleaning in Clontarf
$20M
public liability cover
11 yrs
in the exterior cleaning trade
5.0★
Google rating
7-day
re-clean promise in writing
Clontarf 2093

Sandstone Cleaning for Clontarf homes

Conditions
Harbourside Middle Harbour
Drains to
Middle Harbour
Typical surfaces
off-form concrete, frameless glass, sandstone, timber decks and render
How often here
every 12 to 18 months
Our crew
Local, Manly and harbourside run
Pricing
On request, fixed in writing

Clontarf sandstone cleaning is shaped by salt and algae on frameless glass balustrades, tannin streaks on off-form concrete, and lichen on sandstone walls and steps that lead down to the water. Harbourside the sandstone retaining walls and stairs face Middle Harbour humidity; lichen and moss are removed with a biocide and brush, and the stone's surface skin is kept intact.

Waterfront and water-view houses on Monash Crescent and Peronne Avenue, many architect-designed with off-form concrete, sandstone, timber screens and frameless glass balustrades, above 1960s brick homes on the slopes. We work around Clontarf Beach and reserve, Sandy Bay and the Spit Bridge approach, on streets such as Monash Crescent, Peronne Avenue, Cutler Road and Ogilvy Road.

Field note from Clontarf. Off-form concrete on the Monash Crescent waterfronts marks if you pressure wash it; we soft wash it with an oxalic-free chemistry and rinse at low pressure so the board-form texture is kept and nothing is etched. Nathan G, Founder

Run-off in Clontarf. This part of the peninsula drains to Middle Harbour. On every Clontarf sandstone cleaning job the kerb inlets are bunded and rinse water is captured or sent to garden, as Northern Beaches Council requires.

In Clontarf we usually recommend sandstone cleaning every 12 to 18 months, and the cycle is written on the quote.

What is included

Every sandstone cleaning job in Clontarf includes

Absorption test and method statement
Biocide treatment of lichen and algae
Soft brushing and low-pressure rinse
Poultice treatment of rust and tannin
Optional breathable sealer
What we see in Clontarf

Clontarf surfaces and how we treat them

Off-form concrete: biocide soft wash, low-pressure rinse to keep the board texture
Frameless glass: pure water and soft pad, spigots with a non-acid cleaner
Sandstone: biocide dwell, soft brushing, rinse under 500 psi, no acid
Timber decks: oxygenated timber cleaner and soft brush, no wand
Render: hypochlorite soft wash under 100 psi, rinse under 500 psi
Protecting the garden and drains during sandstone cleaning in Clontarf
Our method in Clontarf

How we do it, and what we protect while we work

Each wall or flight gets a test patch first. A quaternary ammonium biocide is laid on and kept wet for 20 to 30 minutes, the dead growth is brushed off with stiff nylon brushes, and the stone is rinsed with a wide fan under 500 psi held well back. Iron bleed and leaf tannin get a reducing poultice instead of acid.

Pressure capped at 500 psi on all sandstone
Lime mortar joints protected
Carved detail brushed by hand
Heritage documentation on request
How it works

From your first message to the photo report

1

Tell us about it

Call or send the form with your suburb, the surfaces and what is bothering you. A few photos help us quote faster.
2

Fixed price within a day

We measure the property from aerial imagery, settle the method for each surface and send one written price with the guarantee on it.
3

Done and photographed

Your named technician protects the garden and drains, does the work and sends before-and-after photos that afternoon.
Who does the work

Your Clontarf sandstone cleaning team

N
Nathan G
Founder & Lead Technician · 11 years in the trade

Nathan founded The Prestige Standard in 2015 after six years in heritage sandstone restoration. He scopes every substantial Northern Beaches job himself and still runs the soft-wash rig most weeks.

Nathan has scoped sandstone cleaning across our Manly and harbourside run, including Clontarf, Balgowlah Heights and Seaforth.

Credentials: Working at Heights (RIIWHS204E), EWP Yellow Card (WP), Soft Wash Systems certified applicator, NSW Police Check and WWCC.

M
Marco Bellini
Stone & Sealing Specialist · 9 years

A former stonemason, Marco leads the division's sandstone, limestone and travertine work, including the soft, hand-cut Hawkesbury sandstone of the Pittwater slopes.

Credentials: Certificate III in Stonemasonry, Dry Treat and Aqua Mix applicator training, heritage masonry cleaning (ICOMOS Australia short course).

Before we quote Clontarf

What we check on the property

Run-off: this property drains to Middle Harbour, so kerb inlets are bunded and rinse water is captured or sent to garden
Foreshore building line and harbour scenic protection
Bushfire-prone land near Castle Rock and the Spit to Manly walk
Bushfire-prone land: gutters, valleys and roof surfaces cleared before the season and photographed for your records
Pools shielded, pool-safe chemistry on coping, and a note for your pool technician

Written from our own Northern Beaches jobs and reviewed by Marco Bellini, Stone & Sealing Specialist. Last reviewed 1 November 2026. Council and hazard references checked against Northern Beaches Council and the NSW Planning Portal spatial viewer.

Our own job photos

Before and after: our sandstone cleaning work

Real before-and-after photos from our own jobs, never stock. Left is how we found it, right is handover.

Full Gallery
Before and after: Sandstone Garden Steps Restored Before After
Sandstone Garden Steps Restored The orange and purple banding in the stone came back, the treads have grip again, and the stone surface was left whole.
Before and after: Moss and Algae Removed from Shaded Stone Steps Before After
Moss and Algae Removed from Shaded Stone Steps Clean stone, safe footing, and growth that is far slower to return.

What our clients say on Google

We are extremely happy about Nathan's work. Our house is totally transformed after he pressure jet the place. The sandstone stairs and surround have restored to its former glory. Driveways are like new.

Lillian Lau
Google review · Sandstone Cleaning

Highly recommend The Prestige Standard, they cleaned my sandstone, it looks perfect!

Caspar Howard
Google review · Sandstone Cleaning

I recently had my brick pavers cleaned by Prestige Standard and I couldn't be happier with the results. The team was professional, punctual, and paid great attention to detail. My pavers went from looking dull and stained to fresh and almost brand new again.

Dorris Barratt
Google review · Paving Cleaning & Re-sanding

5.0-star rating on Google. Read all reviews.

Sandstone Cleaning in Clontarf: your questions

Not answered here? Call 0494 810 609 or use the form and Nathan will reply personally.

Where we work

Sandstone Cleaning in Clontarf: where we work

Clontarf 2093, on our Manly and harbourside run. Same-day runs often include Balgowlah Heights, Seaforth and Balgowlah.

Book sandstone cleaning in Clontarf

One fixed written price within a business day. If anything we quoted is not clean at handover, we come back within seven days and redo it free.

Get a fixed quote

Tell us about your Northern Beaches property

Four short questions, about a minute. Every Northern Beaches enquiry is read by Nathan, who measures the property from aerial imagery and replies with a fixed written price within one business day.

Fixed written price, no deposit
$20 million public liability
Most jobs booked within 7 to 10 days
Photo report the same day
Step 1 of 4
What needs cleaning?

Tap everything that applies. You can add detail later.

Where is the property?
Property type
Anything we should know?

All optional. Photos and a street address let us measure from satellite and quote without a visit.

Where do we send the quote?

We reply within one business day. By contacting us you agree to our Terms of service and Privacy Policy.

Call 0494 810 609Request a Quote