Cityshine — Sydney's sandstone specialist
Sydney is built on sandstone. From the Heads to the Hawkesbury, sandstone defines our city's heritage architecture and our most prized residential homes. Cityshine has spent over two decades cleaning, restoring and sealing Sydney sandstone — for heritage estates, period homes, commercial buildings, council assets, and modern residential builds where sandstone is used as a feature.
Sandstone is also one of the most demanding surfaces to look after. It's porous, soft compared to granite, and vulnerable to salt damage, biological growth and surface erosion. Working on it requires the right products, the right techniques, and the kind of careful judgement that only comes with years of doing it well.
Sandstone surfaces we restore
- Heritage sandstone driveways and entries
- Sandstone feature walls and cladding
- Sandstone pool surrounds and copings
- Sandstone steps, paths and patios
- Sandstone retaining walls
- Heritage building façades and commercial sandstone surfaces
What sandstone needs protection from
- Biological growth — moss, algae and lichen love sandstone's porous surface
- Salt damage — particularly near pools and coastal homes
- Black staining — from organic build-up over time
- Surface erosion — soft sandstone loses material faster than harder stones
- Failed previous sealers — sandstone needs the right sealer; the wrong one traps moisture and accelerates damage
- Heritage compliance — many sandstone surfaces fall under heritage controls requiring careful, reversible treatments
How we restore sandstone
Sandstone restoration is not the same as concrete cleaning. We use lower-pressure techniques, neutral pH treatments, and breathable penetrating sealers designed to let sandstone "breathe" while protecting it from water ingress and biological growth.
- Heritage-aware site assessment — We confirm the sandstone type, identify damage and previous treatments, and check heritage status where applicable.
- Gentle deep clean — Soft-wash or low-pressure techniques calibrated to the stone's age and condition.
- Biological treatment — Targeted treatments for moss, algae and lichen, without damaging the stone.
- Salt and stain neutralisation — Where required, salt damage and deep stains treated before sealing.
- Breathable sealer — Premium penetrating sealer from PCA, formulated specifically for natural stone in Sydney's climate. Lets sandstone breathe; blocks water and salt.
- Final inspection and care guidance — Walkthrough plus surface-specific maintenance advice.
What proper sandstone sealing delivers
- Restored natural colour — sandstone's warm tones brought back to life
- Biological growth prevention — moss, algae and lichen kept at bay
- Salt and water damage protection — critical near pools and the coast
- Surface preservation — the stone itself protected from erosion
- Heritage-appropriate care — reversible, stone-respecting treatments
- Long-term value protection — sandstone is a feature material; it's worth looking after
FAQ
- How often does sandstone need resealing? Every 5–8 years for most residential applications, sooner for high-exposure surfaces like pool copings.
- Will sealing change the look of my sandstone? You choose. Penetrating sealers preserve the natural matt look; colour-enhancing sealers deepen the warm tones; topical "wet look" sealers create a richer finish.
- Can you remove old paint or failed sealers? Yes — old coatings can be stripped before resealing. We assess and confirm before starting.
- Is your process heritage-compliant? Where heritage controls apply, we use reversible treatments and document the approach. Confirm your heritage status with us during the assessment.
- Can you do indoor sandstone? Yes — sandstone floors, walls and feature surfaces, indoors and out.