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MOULD REMEDIATION · SYDNEY

MOULD REMOVAL THAT TREATS THE CAUSE

Scrubbing and bleach only buy you a few weeks — the mould comes back because the moisture feeding it is still there. We remove the mould safely and fix the damp behind it, so it doesn't return. Free inspection, fixed price, lifetime guarantee.

Licensed & insured Lifetime guarantee We fix the moisture source Free inspection

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15 years' experience
1,000+ homes treated
Lifetime workmanship guarantee
Free inspections, fixed prices
Licensed in-house across Building · Electrical · Waterproofing · Ventilation — Excel Building Services t/a Rising Damp Sydney, Licence No. 366160C
Mould removal Sydney

SURFACE CLEANING DOESN'T FIX MOULD

Mould is a living organism, and the spots you can see are only part of the problem. Over-the-counter sprays and bleach kill what's on the surface, but they don't touch the moisture the mould is living on — so within weeks it's back, often worse. Real mould remediation means removing the mould safely and fixing the dampness causing it. That's where most "mould removal" services fall short, and where we don't.

Because we're damp specialists first, we find what's actually feeding the mould — and in Sydney homes it's almost always moisture: rising damp in the walls, trapped subfloor moisture under the floor, a leak, or condensation. Fix that, and the mould has nothing to grow on.

Signs you have a mould problem

Black or green spots on walls, ceilings or grout
A persistent musty, earthy smell
Mould that returns within weeks of cleaning
Condensation on windows and damp patches
Worse sneezing, allergies or asthma indoors
Mould low on walls or under the house

Mould isn't just unsightly — its airborne spores can trigger respiratory issues and hit children and anyone with a weakened immune system hardest, so it's worth dealing with properly. If the moisture is coming through a slab, basement or wall, that may be a waterproofing job; a free damp inspection pinpoints the source.

What it actually does

WHAT MOULD DOES — TO YOUR HOME AND TO YOU

Mould is never just a surface stain — it's the visible sign of a moisture problem behind it. Wipe it off and it comes back, because the damp feeding it is still there. Left to spread, here's what it does.

What it does to your home

  • Black, green or white growth spreading across walls, ceilings, grout, skirtings and behind furniture.
  • Staining and discolouration that bleeds back through fresh paint.
  • Breakdown of plasterboard, timber, fabrics and soft furnishings as the material slowly rots.
  • A persistent musty smell that soaks into carpets, curtains and clothing.
  • Spores spreading to new rooms through the air and air-conditioning.

Because mould follows moisture, clearing the surface without fixing the cause — rising damp, a leak, condensation or a damp subfloor — only ever buys a few weeks. That's why we find and fix the source, not just the symptom.

What it means for the people living there

Damp and mould are well-recognised contributors to poor indoor air quality. Australian health authorities note that living in a damp or mouldy home is associated with a higher risk of respiratory issues such as coughing, wheezing and worsening asthma, along with eye, nose and throat irritation and allergic reactions — with children, the elderly and anyone with asthma or a weakened immune system most affected.

This is general information, not medical advice. If you're concerned about health symptoms, speak with your doctor.

Our process

HOW WE REMEDIATE MOULD

01
Free inspection & diagnosis

We assess the mould, find the moisture source behind it and quote a fixed price — no guesswork.

02
Safe removal & treatment

Affected materials are removed and surfaces properly treated — not just wiped over — to clear the mould at the source.

03
Fix the cause

We treat the damp driving it — rising damp, subfloor moisture, a leak or condensation — so it can't grow back.

04
Prevent & guarantee

We leave the area dry and protected, with the work backed by our lifetime workmanship guarantee.

Real results

BEFORE & AFTER

Add BEFORE photo
Before — black mould across wall and ceiling line
Add AFTER photo
After — mould removed, moisture source treated, surfaces restored
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FAQs

MOULD, ANSWERED

Because cleaning and bleach only remove surface mould — they don't address the moisture feeding it. Until the damp source (rising damp, subfloor moisture, a leak or condensation) is fixed, the mould returns. We treat the cause, not just the surface.

Mould releases airborne spores that can trigger respiratory problems and aggravate asthma and allergies, and it's a particular concern for children and anyone with a weakened immune system. It's worth dealing with promptly.

Yes — that's the whole point. We diagnose the moisture source first, whether it's rising damp, trapped subfloor moisture, a leak or condensation, and fix that so the mould can't return.

It depends on how widespread the mould is and what's causing it, so we give a fixed price upfront after a free inspection — no hourly rates and no surprises.

It depends on the cause. If the mould results from a building defect or maintenance issue, it's generally the landlord's responsibility; if it's caused by how the property is used, it can fall to the tenant. An inspection that identifies the cause helps settle it.

Yes — we cover all of greater Sydney, including the Inner West, Eastern Suburbs, North Shore, Northern Beaches and Parramatta, with same-day inspections available Monday to Saturday.

BOOK YOUR FREE MOULD INSPECTION

We'll find the moisture behind the mould and quote a fixed price to fix both — no obligation.

Where we work

SERVING ALL OF GREATER SYDNEY

From the Inner West to the Northern Beaches, the Eastern Suburbs to Penrith and the Blue Mountains — Rising Damp Sydney treats rising damp, mould, subfloor moisture and waterproofing problems right across the greater Sydney region. Free inspection, fixed price, same team from first call to final coat.

Northern Beaches North Shore Sydney CBD Eastern Suburbs Inner West Parramatta Sutherland Shire Penrith Blue Mountains

RISING DAMP SYDNEY

Sydney's trusted rising damp, mould & subfloor specialists — licensed, insured and lifetime guaranteed.

Service areaAll of greater Sydney & the Blue Mountains
Phone02 9158 9901
HoursMon–Fri 7am–5pm · Sat 8am–2pm