Coraki sits at the junction of the Richmond and Wilson Rivers, about 30 kilometres downstream from Casino and 50 kilometres from the coast. It is a small town with deep roots in the agricultural Richmond Valley, and it is also one of the communities most profoundly affected by the 2022 Northern Rivers floods. The confluence of two major river systems meant that when both the Richmond and Wilson flooded simultaneously in February and March 2022, Coraki was among the most severely inundated communities in the entire Northern Rivers region.
The mould legacy of the 2022 floods is the defining characteristic of mould work in Coraki. Properties that were flooded to ceiling height, that sat submerged for days, and that were subsequently cleaned to a visual standard without professional remediation are the primary source of mould investigation and treatment requests in this community. For Coraki, this is not ancient history, it is an active, ongoing problem in homes that people are still living in.
The 2022 Flood Mould Legacy in Coraki
Severity of the 2022 Inundation
The February 2022 flood at Coraki was exceptional even by the Richmond Valley’s long flood history. The simultaneous peaking of the Richmond and Wilson Rivers produced flood heights that inundated the majority of Coraki’s residential areas, including streets that had historically been considered above flood level. Properties that had never flooded in living memory took water through the ground floor.
The water that entered Coraki homes was Category 3 contaminated floodwater by the IICRC classification: water carrying sewage, agricultural runoff, chemicals, and the accumulated contamination of two major river systems at peak flow. This is the most serious contamination category for building materials, materials saturated with Category 3 water require treatment as contaminated, not just dried.
What Happened After: The Gap in Recovery
Coraki is a small town with limited resources and a community under significant economic stress. Many homeowners did what they could: cleaned the visible mess, dried what they could access, and moved back in. In some cases, wall linings were replaced in the most visibly affected rooms. But in many properties, the thorough investigation and remediation that Category 3 flood mould requires, thermal imaging, moisture mapping, air sampling, full wall cavity inspection, did not happen.
Four years on, the consequences of that incomplete recovery are appearing in some homes as musty smells without visible cause, persistent low-level respiratory symptoms in occupants, and occasional visible mould breakthrough on wall surfaces that had appeared dry after the initial cleanup.
What a Professional Coraki Assessment Involves
A post-flood mould assessment for a Coraki property is more thorough than a standard Northern Rivers inspection. A thorough Coraki assessment combines moisture mapping across all affected wall faces, thermal imaging to identify moisture pockets invisible to the eye, air sampling to detect spore concentrations in enclosed spaces, and targeted invasive investigation where moisture readings or thermal anomalies indicate concealed mould. The result is a written report with photographic documentation that can support insurance proceedings, repair scoping, and remediation planning. Read about our water damage mould service.
Bathroom ceiling mould is one of the most common non-flood reasons Coraki households look for help, and it’s not always straightforward to tell whether it’s a simple ventilation issue or connected to the town’s 2022 flood history. Our bathroom mould removal in Coraki guide covers how to tell the difference and what treatment looks like for each scenario.
Beyond the Floods: Coraki’s Ongoing Mould Conditions
Coraki also has the standard Richmond Valley mould drivers: older timber and fibro housing, a warm and humid climate with high summer rainfall, and properties on low-lying river frontage that experience elevated groundwater and subfloor moisture even in non-flood years.
The town’s older housing stock, fibro and weatherboard homes from the post-war era through the 1970s, has the same moisture absorption characteristics as similar homes in Casino and Lismore. Bathroom ceiling mould and subfloor mould are endemic in this housing cohort in Coraki as elsewhere.
Services in Coraki
Post-Flood Investigation
Thermal imaging, moisture mapping, and air sampling for 2022 flood-affected properties, with written reports for insurance and remediation scoping. Read our post-flood process guide.
Full Post-Flood Remediation
Category 3 contaminated-water protocol remediation, including containment, material removal, HEPA filtration, antimicrobial treatment, and post-remediation clearance testing. For a closer look at this process and indicative pricing specific to Coraki, see our mould remediation in Coraki guide. For flood and water-damage mould specifically, including what a Coraki assessment covers and indicative pricing, see our flood and water-damage mould in Coraki guide.
Standard Inspection and Assessment
Professional inspection for non-flood-related mould, bathroom ceiling mould, subfloor mould, and other common presentations in older Coraki homes. Read about our inspection service. For more on what a Coraki inspection covers, including post-flood assessment specifics, see our mould inspection in Coraki guide.
Subfloor Treatment
Subfloor access and antimicrobial treatment for mould in the floor structure of older elevated homes. Read about our subfloor service.
Mould Removal Cost in Coraki
| Job Type | Typical Cost Range |
|---|---|
| Initial inspection and written report | $250 to $500 |
| Post-flood concealed mould investigation | $450 to $900 |
| Single bathroom ceiling treatment | $300 to $650 |
| Subfloor mould treatment | $650 to $2,500 |
| Single room post-flood remediation | $1,500 to $4,000 |
| Full property post-flood remediation | $6,000 to $30,000+ |
| Post-remediation clearance testing | $300 to $500 |
Coraki is at the lower-mid range of Northern Rivers pricing, consistent with the Richmond Valley property market. Travel time is factored into scheduling rather than pricing for standard jobs. Full cost guide.
Nearby Areas We Also Cover
We cover Coraki and the Richmond River communities including Woodburn, Broadwater, and the Bungawalbyn area. For larger centres, we cover Casino to the west and extend toward Lismore for flood-related work.
Frequently Asked Questions, Mould Removal in Coraki
Our home was flooded in 2022 and we had it cleaned at the time. Do we still need a professional assessment? If the clean-up at the time was visual, remove visible mud and debris, surface-clean, and let it dry, then yes, a professional assessment is still warranted. Category 3 flood mould can exist in wall cavities that look clean on the surface for months or years after the initial event. Thermal imaging and moisture mapping are required to identify what’s happening inside the structure. A visual clean in 2022 does not confirm that concealed mould is not present now.
What does Category 3 flood mould mean for my home? Category 3 water is the IICRC classification for grossly contaminated floodwater, water containing sewage, pathogens, and heavy contamination. Building materials saturated with Category 3 water are treated as contaminated rather than simply wet. This typically means removal rather than in-situ cleaning for porous materials like plasterboard and insulation. The mould that establishes after Category 3 saturation is treated under the same protocol, it cannot simply be wiped or fogged; affected materials must be removed and replaced. Read our full post-flood guide.
Can I claim on insurance for flood mould in Coraki? It depends on your policy and when and how you made your flood claim. If you have a live or outstanding flood insurance claim, mould remediation documentation may be included. If you made a claim at the time and it was settled, the situation is more complex, but the contractor can provide documentation that establishes the current condition and its likely causal relationship to the 2022 flood event, which some insurers have accepted. We recommend speaking with your insurer and seeking advice from the Financial Rights Legal Centre (a free NSW service) if you have a dispute.