Subfloor mould in Figtree is less common than the condensation mould that dominates this suburb’s brick-veneer and double-brick housing, but it’s a genuine issue in the minority of older elevated timber homes scattered through the streets closer to Mount St Thomas and the creek lines. Indicative treatment pricing sits around $1,500-$6,000, depending on subfloor size, access and how much ventilation work is needed. If your Figtree home has a raised timber floor rather than a slab, here’s what to look for and what a fix typically involves.
Why Subfloor Mould Shows Up in Some Figtree Homes and Not Others
Most of Figtree’s housing stock, developed from the 1950s through the 1980s as Wollongong’s population pushed inland and south, is solid brick, double-brick or brick veneer on a slab, which simply doesn’t have a subfloor cavity to worry about. That’s the main reason subfloor mould is a smaller share of Figtree enquiries than it is in the older fibro suburbs further north. But a minority of homes in the suburb, particularly older cottages nearer Mount St Thomas and along the creek systems draining toward Lake Illawarra, sit on stumps or piers with a genuine timber subfloor, and those follow the same rules as raised-floor homes anywhere in the region: block subfloor vents with garden beds, paving or added decking, add ground moisture from nearby creek lines, and mould on bearers, joists and the underside of flooring is close to inevitable over time. Our Figtree location page covers the suburb’s wider housing mix and why brick construction dominates the mould pattern here.
Signs Your Figtree Subfloor May Have a Problem
- A musty or earthy smell that’s noticeably stronger near floor level than at ceiling height
- The smell intensifies in winter or for a day or two after rain
- Floorboards that feel soft, springy or slightly cupped underfoot in specific spots
- Visible staining or mould on the underside of boards, if you can see into the subfloor via an access hatch
- A cold, damp feel to one room that doesn’t match the rest of an otherwise dry house
One of these alone is worth a look; two or more together is a reasonably strong signal that the subfloor needs a proper inspection.
What Subfloor Treatment Involves in an Older Figtree Home
The sequence for a genuine subfloor job is the same wherever the house sits:
- Entry and assessment. A technician physically enters the subfloor via the access hatch to assess the extent of affected timber, the condition of existing vents, and how wet the ground actually is.
- Antimicrobial treatment of affected bearer, joist and flooring surfaces, rather than replacement, unless timber is structurally compromised.
- Ventilation correction. Clearing vents blocked by garden beds, paving or decking added over the years, and adding additional vents where the existing pattern was never sufficient for the site.
- Drainage referral where needed. If water is pooling under the house after rain rather than draining away, that’s a separate job for a licensed plumber or drainage contractor, and treating the mould without fixing the water simply invites it back.
Our subfloor and roof void mould treatment service covers this process in full, and our subfloor ventilation guide explains appropriate vent sizing for this climate.
How Much Does Subfloor Mould Treatment Cost in Figtree?
| Job type | Indicative price range* |
|---|---|
| Mould inspection / moisture investigation | $300-$800 |
| Subfloor treatment + standard ventilation correction | $1,500-$6,000 |
| Subfloor treatment + mechanical ventilation or drainage referral | Toward the upper end of the above range, scoped after inspection |
*Indicative and region-general only. Final pricing follows a site inspection and formal written quote. See our mould removal cost guide for the full breakdown across job types.
Frequently asked questions
How do I know if my Figtree home even has a subfloor cavity?
If your floors are tiled or carpeted directly over a slab with no step up at external doors, you almost certainly don’t have one, and the vast majority of Figtree’s brick and brick-veneer homes are built this way. If there’s a noticeable step up from ground level at the front or back door, or you can see vents in the low brickwork around the base of the house, it’s a raised timber floor and worth checking.
We have a musty smell but no visible mould anywhere in the house. Where do we start?
An inspection covering both the subfloor (if present) and the roof void is the logical first step, since a musty smell with no visible growth commonly traces back to one of those two hidden spaces. A moisture meter and, where useful, thermal imaging will usually locate the source without lifting any flooring.
Is subfloor mould less of a problem in Figtree than in Farmborough Heights or the northern suburbs?
Generally, yes, purely because so much of Figtree’s housing stock doesn’t have a subfloor at all. Where a Figtree property does have one, typically an older cottage on stumps, the same risk factors apply as anywhere else: blocked vents, shaded aspect and ground moisture.
How long does subfloor treatment take on a typical Figtree home?
A standard subfloor treatment on a suburban home usually takes half a day to a full day, depending on subfloor size and how much ventilation work is needed. Larger or more waterlogged subfloors can take longer.
Get a straight answer on your Figtree subfloor
Send us a photo of the subfloor access if you have one, along with a description of when the smell is worst, and we’ll give you an honest indicative price and the right next step. Get a free quote.