Sick of pressure cleaning the same mould again and again?
Every pressure clean without sealing opens the pores wider — so mould and algae return faster. Seal it once and break the cycle for years.
- Stops mould, algae & black staining coming back
- Repels water, wine, oil & pet stains — see the demo
- 15 year sealer product warranty option available
- Fixed price after a free on-site inspection
Real Sydney homes. Real results.
Every job below was completed by our team. Drag the slider on each photo to see the difference sealing makes.
Three steps. Split over two days.
A meticulous process designed to protect your stone for years to come.
Free on-site quote
We visit within days, inspect your stone and give you a fixed price. No sales pitch.
Deep clean + prep
We strip mould, algae and old sealant so the new sealant penetrates properly — not just sits on the surface.
Premium sealant applied
Choose our water-based sealer or upgrade to the solvent-based sealer with a 15-year product warranty. Deep-penetrating protection against water, wine, oil and staining.
The Ascent Standard · Sydney NSW
Every unsealed day is damage compounding.
Mould & algae eat into stone
Unsealed stone is porous. Mould doesn't just sit on top — it roots deep and etches permanent black and green stains no amount of scrubbing removes.
Pressure cleaning makes it worse
Every clean without sealing opens the pores wider, so mould returns faster and grout erodes. You end up on a treadmill.
One seal breaks the cycle
A professional impregnating sealant repels water, oil and organic growth. Upgrade to the solvent-based option for a 15-year product warranty.
Rated 5.0 on Google across Sydney.
Every review below is a real customer. Read them — and hundreds more — straight from our Google Business profile.
"Our travertine looked black under the trees. After Ascent sealed it, six months on and it still hoses off in five minutes."
"Wish I'd called them the day we installed our pool tiles. The colour is back and now it's protected."
"Straight shooter, fixed price, showed up on time. The stone looks like new."
Backed by a 15-year product warranty option.
Choose our water-based sealer, or upgrade to the solvent-based sealer that comes with a 15-year manufacturer product warranty. Either way, the sealant molecules keep protecting your stone from stains long after the initial water-beading effect softens.
Answered before you ask.
How long does the sealant last?+
We offer two options: a water-based sealer, or a premium solvent-based sealer that comes with a 15-year product warranty. The sealant molecules keep protecting the stone from stains long after the initial water-beading effect softens.
Do you need to strip old sealant first?+
Usually yes. Applying new sealant over failed or contaminated sealant traps moisture and shortens its life dramatically. We inspect and recommend the right prep.
Will my stone look different after sealing?+
No — we use deep-penetrating sealers that protect the stone from within. No sheen, no plastic-looking film. It just looks natural and clean.
How much does it cost?+
Most residential jobs land between $18–$35/m² depending on stone type, condition and access. You get a fixed written price after the free on-site quote — no surprises.
How long does it take?+
We split most jobs over two days — cleaning on day one, sealing on day two. This gives us the flexibility to apply either water-based or solvent-based sealers under the right conditions for a proper, long-lasting result.
What areas do you service?+
We cover most of Sydney. Regulars in Lower North Shore · Eastern Suburbs · Upper North Shore · Inner West · Sutherland Shire. Message us with your suburb — if we can't help we'll refer you to someone who can.
Winter's here. Your stone can't wait.
The longer stone sits unsealed through wet months, the deeper the damage. Book a free quote today — most customers hear back within 2 hours.