Damp Proofing · Brisbane
“Damp” isn't one problem — it's at least four, and each needs a different fix. Treating the wrong one wastes thousands. We diagnose which type of moisture problem your home actually has, then apply the treatment that matches it, backed by a 2-year warranty.
Tell us what you're seeing — or what your building report said — and we'll arrange a no-obligation on-site inspection and written quote.
We connect you with QBCC-licensed damp specialists servicing inner Brisbane. No obligation. The specialist's assessment fee is $450 plus GST. That includes up to two hours on site diagnosis, that may include camera inspection of the stormwater drains.
Diagnosis first
The visible symptoms — stains, mould, peeling paint — look similar, but the causes and cures are completely different. This is the single biggest reason damp repairs fail: the wrong problem gets treated.
Ground moisture wicking up through masonry with a failed or missing damp-proof course. Peaks around a metre with salt tide-marks. Fix: chemical DPC injection.
Treatment →Moisture pushing sideways through a wall from garden beds, paths or hillside soil. Follows the ground line, flares after rain. Fix: remove the bridge, tank and drain.
Treatment →Trapped humid air under the house condensing on timber, feeding mould and musty smells. Fix: restore and mechanise subfloor airflow.
Treatment →Hygroscopic ground salts left in the wall that keep destroying plaster even after moisture is stopped. Fix: strip, desalt and salt-retardant render.
Treatment →Our approach
Every job starts with instruments, not assumptions. Moisture-meter mapping tells us which of the four problems you have — sometimes it's two at once, which is common in older Queenslanders.
Moisture mapping across the affected walls and subfloor identifies the moisture source and rules out plumbing or roof leaks.
DPC injection, tanking and drainage, or ventilation — whichever the diagnosis calls for. Never the treatment we happen to sell; the one the wall needs.
Salt-contaminated plaster stripped and re-rendered with salt-retardant systems; timber and finishes made good.
2-year workmanship warranty on the treatment. If the damp comes back, so do we.
In Brisbane's Queenslanders
Common questions
It depends entirely on which damp problem you have: subfloor ventilation typically runs $900–$3,500, chemical DPC injection about $200–$400 per linear metre, and lateral damp fixes range from simple landscaping to tanking systems. The cost guide has the full breakdown; the assessment fee is $450 plus GST and it includes the written quote.
Very commonly — an older Queenslander might have rising damp in its base walls, salt contamination in the plaster, and a sealed subfloor feeding both. The assessment maps all of it so the quote covers one complete fix rather than a series of surprises.
Left alone, damp rots floor joists and skirtings, crumbles mortar and brick faces, and feeds mould that affects air quality. The repair cost grows with the damage — a wall treated early is a far smaller job than one where the timber and brickwork have gone.
Our focus is structural damp — rising, lateral, salt and subfloor moisture in existing homes. Wet-area membrane work for new bathrooms is a different trade specialty; if that's what you need we'll tell you straight rather than quote outside our lane.
That's exactly what the free call is for. Describe what you're seeing and we'll bring the moisture meters.
We connect you with QBCC-licensed damp specialists servicing inner Brisbane. No obligation. The specialist's assessment fee is $450 plus GST. That includes up to two hours on site diagnosis, that may include camera inspection of the stormwater drains.
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Rising Damp