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Mould & Damp Inspection in Retreat
Mould in Retreat is usually wind-driven rain and a high water table. A diagnostic inspection establishes which of the three damp mechanisms is at work before you spend anything, because the repairs are completely different and the wrong one is the most common expensive mistake. Expect R1,800 to R4,500 and a written report within 48 hours.
What causes mould in Retreat
Wind-driven rain and a high water table. The Flats are flat and exposed, with little natural shelter, so wind-driven rain reaches elevations on every side rather than one. Low-lying sections sit on made-up or reclaimed ground with a seasonally high water table, so subfloor moisture and settlement occur together.
Made-up ground in places, producing settlement cracking that is often mistaken for structural failure.
How to tell which type you have
Damp on several elevations rather than one, floor-level moisture that worsens through winter, and cracking that appears alongside it.
- Rising damp
- Reads high at the base of the wall and falls with height. Stops at a consistent level, usually with salt crystals at the tide line.
- Penetrating damp
- A patch unrelated to floor level that darkens during and after rain and dries between.
- Condensation
- High surface moisture with a comparatively dry wall behind it. Worst in the coldest corners, behind furniture and around windows — and it occurs in buildings that are not leaking at all.
The pattern is the diagnosis. An inspector takes moisture readings at three heights plus humidity and surface temperature, because each mechanism leaves a different signature — and a thermal camera on its own does not see moisture, only temperature difference.
What it costs to put right in Retreat
External drainage and ground-level correction first, which is cheap; wall treatment only after the water is being taken away from the building.
| Item | Indicative range |
|---|---|
| Mould & damp diagnostic inspection | R1,800 – R4,500 |
| Laboratory sample (per sample) | R900 – R2,500 |
| Chemical DPC injection (per linear metre) | R900 – R1,800 |
| Replaster after damp treatment (per m²) | R350 – R700 |
| Roof or balcony waterproofing (per m²) | R250 – R650 |
| Mechanical extraction to a bathroom or kitchen | R2,500 – R8,000 |
Indicative market ranges for guidance, not quotes. Full mould & damp guide →
Also common in Retreat
- Asbestos cement sheeting on pre-1990 roofs, which must never be pressure-cleaned
- Original electrical installations, frequently found on the same inspection
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Frequently asked questions
Why does the damp keep coming back in Retreat?
Almost always because the water source was never found. Painting over mould or sealing the inside of a wall removes the evidence and leaves the cause running. In Retreat the usual cause is wind-driven rain and a high water table, and until that is dealt with the stain returns.
How much does a mould inspection cost in Retreat?
Between about R1,800 and R4,500 for a diagnostic inspection with a written report, depending on the size of the property and access. Laboratory sampling, where it is genuinely warranted, adds R900 to R2,500 per sample — but for most homeowners who can already see the mould it adds cost without changing the remedy.
How do I know which type of damp I have?
By the pattern, not the appearance. Damp on several elevations rather than one, floor-level moisture that worsens through winter, and cracking that appears alongside it. An inspector takes moisture readings at floor, mid-wall and ceiling height, plus humidity and surface temperature, because rising, penetrating and condensation damp each produce a different signature.
What will it cost to fix?
External drainage and ground-level correction first, which is cheap; wall treatment only after the water is being taken away from the building.
Is the mould in my home dangerous?
Indoor damp and mould are associated with respiratory symptoms, asthma exacerbation and allergic rhinitis, and the risk is higher for children, elderly occupants and anyone with asthma or a weakened immune system. It warrants prompt repair of the water source rather than alarm — and South Africa has no statutory indoor mould exposure limit, so be wary of anyone whose first recommendation is a laboratory test.
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Full home inspection in Retreat → · The complete guide to mould & damp →