Rising Damp Ipswich connects owners of older Ipswich homes with independent, QBCC licensed damp specialists. We start by working out whether what you have is actually rising damp — in this city it is very often condensation, a drainage fault, or a room that was built in underneath a Queenslander without a damp course.
Talk it throughTell us what the wall is doing.
We connect Ipswich property owners with independent damp specialists holding the appropriate QBCC licence. We are a referral service and do not carry out the work ourselves.
Rising Damp Ipswich arranges damp assessments across Ipswich and the western corridor. This page is about rising damp in Silkstone, QLD.
An even horizontal line, usually somewhere between 600mm and 1.2m above the floor, on a ground floor wall. It marks the height where water stops climbing because it evaporates as fast as it arrives. Condensation and leaks do not draw a level line.
Salt left behind when the water evaporates out of the wall. It can look like a dusty white fur, or like crystals in the mortar joints. It often looks worse in a dry week, which confuses people, because dry weather is when the evaporation is fastest.
Not a bubble in one spot but a strip of blistering that follows the same height along the wall. Modern acrylic paint on an old solid wall traps water behind it, so the paint lets go before the plaster does.
Timber in contact with a damp wall swells, then rots from the back. A skirting that gives under a thumbnail while the face still looks sound is a good early sign, and it is the one most often painted over rather than investigated.
Particularly in a room that has been built in underneath, or a front room that gets no sun. The smell arrives before the staining does, and it is the reason a lot of people ring in the first place.
The ceiling is dry, the top of the wall is dry, and the damage is all in the first metre. That distribution is the strongest single indicator that water is arriving from below rather than from a roof, a gutter or a pipe.
Silkstone was built for the mines and the workshops, and it shows in the housing: small, plain, close together and old. Cottages of this kind were built cheaply and correctly for their time, which usually meant no damp proof course at all. They have coped for a century because they were built to breathe, and they stop coping the moment they are sealed.
Modest timber and brick cottages, many extended at the back. The extensions are where the trouble concentrates. A 1990s addition on a slab, butted against a 1910 wall with no barrier in it, gives water a route from the new floor into the old brick, and the damage appears in the old part of the house while the cause sits in the new one.
Silkstone sits on the transition between ridge and flat, and the soil carries a good deal of clay. Clay holds water against a footing for days after rain rather than draining it away, which keeps a wall wet long enough for the water to climb. It also moves, which is why cracked render and damp so often turn up on the same wall here.
Ipswich has a humid subtropical climate with most of its rain arriving between November and March, often in heavy falls rather than steady drizzle. That pattern matters for damp in two ways. Ground that is saturated repeatedly through a wet summer keeps a wall wet long enough for water to climb it, and the same humidity produces condensation on cool internal surfaces through the cooler months. The two look alike to an owner and behave completely differently. A wall that is worst in February and improves by August is behaving like ground water. A wall that is worst on cold mornings, in a bathroom or a closed-up room, is almost certainly not.
In Ipswich the honest first answer is often no. Condensation, a shower leak, a failed downpipe and reactive clay all produce a wet wall, and none of them is rising damp.
Pre-1900 solid masonry usually has no barrier. Interwar brick usually has a bitumen one that is now old. Anything on a modern slab has a membrane and is not a candidate.
If the property has been through 2011 or 2022, some of the salt in that wall arrived from the river, not from the ground. That changes the treatment.
A chemical course injected into the mortar bed. It stops new water climbing. It does nothing about the water and salt already in the wall.
The full sequence, and why the order matters in Silkstone, is set out on our how it works page.
Rising damp is ground water climbing a wall. Everything else - the salt, the lifting paint, the smell - follows from that one fact.
This is the most common version of rising damp in Ipswich, and it is created by a renovation rather than by the original house.
Ipswich is the oldest provincial city in Queensland, which means a share of its masonry predates the damp proof course entirely.
A damp course is not permanent. The two materials Ipswich houses actually have fail in completely different ways.
This is the most common misdiagnosis in South East Queensland, and it goes both ways. Plenty of rising damp gets dismissed as condensation, and a great deal of condensation is treated as rising damp at considerable expense.
If your property has been through 2011 or 2022, this question has to be answered before anybody quotes on a damp course.
The item that surprises owners is not the injection. It is the making good. Removing contaminated render, waiting for a thick wall to dry, and re-rendering in a breathable system is usually the larger half of the bill, and a quote that leaves it out is not cheaper — it is incomplete.
Indicative ranges for damp work in Ipswich, so you can sanity-check a quote before you accept it. Every fixed price follows an on-site assessment, because the two things that drive the cost — wall construction and how much render has to come off — cannot be judged from a photograph.
| Work | Indicative range | What it covers |
|---|---|---|
| On-site assessment and written diagnosis | $450 plus GST | Readings taken at intervals up each affected wall, an external check of ground levels, paving, downpipes and any built-in-under work, and a written finding. Where there is cracking it also says plainly whether what you need is a damp specialist or a structural engineer. |
| Chemical damp proof course, injected | $180 to $320 per linear metre | Drilling and injecting a cream or fluid barrier into the mortar course, then making good. The range depends on wall thickness, whether it is single or double skin, and access. A solid nineteenth century wall costs more than an interwar cavity wall. |
| Salt-affected render removal and replacement | $120 to $260 per square metre | Taking off contaminated render and plaster, allowing the wall to dry, then re-rendering in a system that lets the wall breathe. This is usually the larger half of the bill and the half people do not expect. |
| Subfloor ventilation to a Queenslander or built-in-under room | $1,800 to $4,500 | Additional vents, or powered extraction where the underfloor cannot be ventilated passively. Often the entire answer on a timber house, where no damp course is involved at all. |
| Drainage and ground level correction | $900 to $6,000 | Lowering garden beds and paving away from the wall, correcting falls, and taking downpipes into a line rather than discharging at the base of the building. Frequently the cheapest item on this list and the one that does the most. |
Prices are indicative ranges only. Every fixed price quote follows an on-site assessment.
The independent evidence for electro-osmotic and wireless systems is weak, and several reviews have found no measurable effect against an untreated control. We would not recommend spending money on one before a physical barrier and the ground conditions have been dealt with. If you are considering one, ask the supplier for a controlled trial rather than testimonials, and get the guarantee terms in writing.
An assessment is $450 plus GST. Injection runs $180 to $320 per linear metre depending on wall thickness and access, and render replacement $120 to $260 per square metre. Drainage and ground level work runs $900 to $6,000 and is often the item that does the most. Every figure here is indicative and a fixed price follows the assessment.
Often, yes. If a garden bed, a path or a concrete driveway sits above the damp course, it is carrying water past a barrier that is working perfectly well. Lowering the ground outside is cheap, permanent and frequently the entire answer. A specialist who does not look outside before quoting is not doing the assessment properly.
Injecting a damp course and replacing render generally does not require development approval. Drainage work, retaining walls over a certain height and any structural repair can. Ipswich City Council is the authority and their planning team will tell you before you commit to anything.
Tell us what the wall is doing. Tell us what the wall is doing and roughly when the house was built, and we will put you in touch with an independent Ipswich damp specialist. If it sounds like condensation or a drainage problem rather than rising damp, we will tell you that instead of arranging a quote.
We connect Ipswich property owners with independent damp specialists holding the appropriate QBCC licence. We are a referral service and do not carry out the work ourselves.
We take enquiries across the Ipswich local government area and the western corridor.
Rising Damp Ipswich