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.
Tell 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.
Three things decide it, and none of them can be judged from a photograph.
Before 1900 there is often no damp course at all. Between the wars there is usually a bitumen one that has aged out. On a modern slab there is a membrane and rising damp is not the mechanism.
On a Queenslander this is almost the whole question. The timber house on stumps cannot take rising damp. The block room added at ground level in 1985 can.
A garden bed, a path or a driveway sitting above the damp course carries water straight past it. Lowering the ground is often cheaper than any treatment.
That is what the assessment is for, and it is the cheapest step.
Why Ipswich homes get rising damp: Ipswich is the oldest provincial city in Queensland, and it has the housing to prove it. The centre and the older suburbs carry solid masonry from the 1860s onward, built before the damp proof course was standard practice and in many cases built without one at all. A solid wall is a single continuous path from the footing to the plaster, so whatever is in the ground has a route all the way up.
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.
Rising damp only affects ground floor walls, because the water comes up out of the soil. If you can see any of these low on a wall, get a full assessment. A specialist takes moisture readings inside and out, checks the ground levels around the house, and puts the cause in writing — before the plaster and the skirtings are damaged, and before anyone quotes a repair.
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.
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.
On a Queenslander this is the whole question. The original house is on stumps and dry; the room added at ground level is where the water is getting in.
The internal readings say how high and how wet. The external check says why — ground levels, paving, garden beds, downpipes, and render that stops the wall drying.
Remove contaminated render, let the wall dry, and finish in a breathable system. Skipping this step is the most common reason a damp repair comes back looking like a failure.
The full sequence is set out on our how rising damp works page.
A Queenslander on stumps cannot get rising damp in its timber walls. The room somebody built in underneath it can, and almost never has a damp proof course in it.
Flood salt sits at the flood height for years and needs no ongoing water to keep looking terrible. A damp course will not touch it, and that question comes first.
We work out which cause fits before anybody drives to you. Several of them are cheaper than rising damp and worth ruling out first.
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.
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.
A great deal of Ipswich sits on reactive clay, and reactive clay cracks buildings. A crack lets water in, and then the wall looks damp.
On a timber house, damp is a ventilation problem far more often than it is a damp course problem - and ventilation is much cheaper.
Injection is the standard way to put a barrier into a wall that never had one, or one whose original course has failed.
This is usually the larger half of the bill, and it is the half a cheap quote leaves out.
We are asked about these constantly, so here is a straight answer rather than a sales pitch in either direction.
An assessment should tell you what you have, not sell you a treatment. On a fair share of Ipswich enquiries the honest finding is that this is not rising damp at all.
Indicative ranges, what each one includes and what it does not, so you can sanity-check a quote before you accept it.
Rising damp is ground water soaking up into a wall from the soil underneath it. Brick, stone and mortar are full of tiny holes, and water climbs those holes the same way it climbs a paper towel. It stops about a metre up, where it evaporates as fast as it arrives. That is why it leaves a level line rather than a patch.
Not in its timber walls. A house standing on stumps with air underneath has no contact with the ground for water to climb. What can get it is anything built in underneath later — a brick or block ground floor room, a laundry, a garage — because that work sits on the ground and almost never has a damp proof course. In Ipswich that is the most common version of this problem.
Almost certainly not. A modern slab has a membrane under it and the brick skin stands clear of the ground on its own edge beam. There is no route for ground water. A wet wall in a house that age is a leak, a shower, a drainage fault or condensation, and you need a different trade.
Timing and shape. Rising damp is worst through the wet summer months, sits in the first metre of the wall and draws a level line. Condensation is worst on cold mornings, appears on the coldest surfaces in the room, often high in corners and around windows, and does not respect a horizontal line. In this climate condensation is the more common of the two.
No, and it matters. Flood water saturates a wall through its full thickness and leaves salt behind at whatever height it reached. That damage can look exactly like rising damp years later. The difference is that flood salt does not need an ongoing water source, so installing a damp course will not fix it. The salt has to be drawn out of the wall.
Usually not directly. Much of Ipswich sits on reactive Walloon clay, which swells when wet and shrinks when dry, and that movement cracks render. A crack then lets water in, so you get a wet wall — but the mechanism is movement, and injecting a damp course will not stop it. A stepped crack through brickwork should be looked at by a structural engineer before anyone quotes on damp.
It stops new water climbing. It does nothing about the water and salt already in the wall, which is what you can actually see. If the contaminated render is left in place, the wall will keep showing marks and the job will look like it failed. Budget for both halves.
A treated wall dries at roughly a month per 25mm of thickness, in good conditions. A 225mm solid wall is therefore most of a year. Anyone promising a finished, repainted wall a fortnight after injection is either not treating rising damp or is about to trap the moisture behind new plaster.
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.
Rising damp is gradual deterioration, and home policies almost universally exclude it. A sudden event — a burst pipe, a storm, a flood where you hold flood cover — is a different matter and may well be covered. Read the wording on gradual damage before assuming either way.
An independent damp specialist holding a current QBCC licence in the relevant class. This site is a referral service. We put you in touch and we do not carry out the work ourselves, which is also why nothing on this page is a fixed quote.
If you are buying, yes, and read what it says about moisture carefully. A building and pest report flags moisture but is not a damp diagnosis, and the two get confused. If a report has flagged damp on a house you are buying in Ipswich, that is exactly the point at which a specific assessment is worth the money.
Not if the cause was dealt with rather than covered. A correctly installed barrier does not wear out on any timescale you need to care about. What does come back is damage from salt left in the wall, and damp from a garden bed rebuilt against the wall a year later. Both are avoidable, and both get blamed on the treatment.
You can, and it will look better for a season. Sealing the inside face of a wet wall does not stop the water arriving, it only stops it leaving where you were watching. It generally reappears higher up the wall or in the adjoining timber, and the second round of damage is worse than the first.
The damp itself is not, but persistently damp walls support mould, and mould matters for asthma and allergies. If someone in the house has a respiratory condition, that is a fair reason to deal with it sooner rather than watching it for another season.
Yes. Ipswich has a great deal of nineteenth century commercial masonry, and it is exactly the stock most likely to have no damp course. Heritage listing does change what can be done to a facade, so tell us if the building is listed and the specialist will work to that from the start.
About an hour for a typical house, longer where there is a built-in-under level or several affected walls. The written finding follows within a few days. It is deliberately not a five-minute look — the external check is where the cause usually is, and that part cannot be rushed.
The whole Ipswich local government area and the western corridor — the CBD and the heritage suburbs, the eastern suburbs around Booval and Bundamba, the river suburbs, and out through Springfield, Ripley and Rosewood. If you are not sure, ring and ask.
We take enquiries across the Ipswich local government area and the western corridor.
Map data © OpenStreetMap contributors.
Rising Damp Ipswich