Hallway Wall Moisture Readings
Hallway Wall Moisture Readings is a high-severity moisture defect SURE inspectors have documented across 289 inspection reports. Highest concentration in Ellenbrook.
Causes
- Condensation.
- Water ingress behind tiles at the poorly finished junction of window sill and tiled reveal finish
- Various water ingress issues (e.g., leaks, poor drainage, rising damp).
- Plumbing leaks (less likely without specific mention)
- Failed/aged waterproofing membrane in the bathroom
Symptoms to look for
- High moisture readings.
- High moisture readings on hallway wall linings adjacent to bathroom/shower
- Elevated moisture readings around the window frame or lining
- High moisture readings (detected by NDI moisture meter)
- Elevated moisture readings using an NDI moisture meter
Remedies
- Engage a carpenter or glazier for repairs.
- Contact a glazier for repairs.
- Engage a building expert to investigate the cause of the high moisture and determine the full extent of any damage and the estimated cost of repairs prior to contracts becoming binding.
- Accurate diagnosis of the cause and extent of the damp problem is very important and should be assessed prior to purchasing, as reinstatement of a damp proof course can be costly
- Engage a building expert to investigate the moisture and its cause and determine the full extent of damage and estimated cost of repairs prior to contracts becoming binding
Where we see this most
These suburbs show the highest concentration of hallway wall moisture readings in our inspection data (minimum five observations). Click a suburb to see its full defect profile.
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Curated entries in Moisture
- Curated 2–4/5Excessive Moisture Readings
A non-destructive moisture meter has detected elevated readings in wall or ceiling linings at the time of inspection. Elevated readings alone do not confirm the source - they indicate that water is present in a material and that further investigation is warranted to rule out active leaks, drainage failure, or concealed termite activity.
- Curated 1–4/5Deteriorated Splashback Sealant
Failed or missing sealant at the benchtop-to-splashback junction allows water to track behind the cladding and into the wall cavity, leading to substrate damage and potential mould growth. This junction is one of the most commonly missed maintenance items in kitchens across Perth's mid-century and newer housing stock.
- Curated 2–4/5Excess Moisture in Walls Adjacent to Wet Areas
Elevated moisture readings on wall linings next to bathrooms and showers indicate water is escaping the wet area - either through a failed waterproofing membrane or a leaking pipe inside the wall cavity. Left unaddressed, trapped moisture breaks down plasterboard, promotes mould, and can rot the framing behind the lining.
- Curated 1–3/5Tile Grout Deterioration in Shower
Grout failure in shower recesses is one of the most common moisture-pathway defects our inspectors record, present in 9.4% of all reports. Deteriorated or missing grout - including at screen junctions and wall-floor junctions - allows water to migrate behind tiles, saturating the substrate and ultimately causing waterproofing membrane failure, tile de-bonding, and concealed wall framing damage. AS 3740 requires shower wet areas to be fully waterproofed; grout condition is a primary indicator of whether that waterproofing system remains effective.
- Curated 3–5/5Bath Hob and Surround Missing Waterproof Membrane
I inspected the bath hob, step-down, and vertical wall returns and could not confirm a continuous waterproof membrane behind the tiling. Reference: AS 3740. In my experience overspray and splash then tracks into the sub-tile substrate over time. I see this most on renovations completed before the post-2004 tightening, and still on recent unlicensed work.
- Curated 2–4/5Shower Floor Fall Insufficient to Drain to Waste
I ran water in the shower recess and it ponded on the floor rather than draining cleanly to the waste - I measured a fall flatter than the 1:80 reference I work from (AS 3740). In my experience standing water then loads the grout lines, saturates the membrane at the low point, and tracks under the hob into the adjacent room. I often see this where the screed has been laid flat to suit a large-format tile layout.