Parramatta
RISING DAMP
EXPERTS

Parramatta is one of the oldest settled parts of the country, so it holds early colonial cottages, grand Victorian homes and Federation houses alongside dense modern infill — all on clay soils near the Parramatta River. The older masonry was built with no effective damp-proof course on damp, low-lying river ground, while newer slab homes sit on reactive clay that cracks footings. Rising damp in the old stock and slab-edge moisture in the new are both common.

We confirm whether moisture is rising through the walls, sitting in the subfloor or coming through a cracked slab edge, then treat the real cause — a damp-proof course and breathable render for older homes, or slab-edge and drainage work for newer ones — so the repair holds.

Parramatta mixes heritage homes with no damp-proof course and newer slab homes on reactive river clay. Ground moisture rises through old brick or pushes in at a cracked slab edge, leaving salts that blister paint, blow plaster and rot timber — and if left, migrate into the structural masonry where repairs cost far more.

Musty smell or a damp subfloor → Subfloor ventilation

Parramatta's homes on river-flat clay hold damp under the floor. An underfloor ventilation system dries the subfloor and clears the smell.

Tide marks, peeling paint or salt on walls → Rising damp treatment

Older brick and historic homes near the river often lack a working damp course. Our DPC injection stops moisture rising.

Blown, crumbling or hollow plaster → Damp plastering

We re-coat with a breathable salt-resistant plaster system.

Mould on walls, ceilings or in cupboards → Mould remediation

Our mould remediation clears growth and resolves the damp cause.

Penetrating damp or wet areas → Waterproofing

We waterproof and tank below-ground walls and wet areas near the river.

Not sure which problem you have? → Free damp inspection

A free damp assessment pinpoints the cause with a fixed quote.