Underfloor ventilation fans pull damp air out of the subfloor and replace it with drier outside air.
5.0 from 57 Google reviews · A-Grade licensed · REC 33326
We assess subfloor moisture, access, existing vents, airflow paths and drainage before deciding whether mechanical ventilation is appropriate. The quote covers the agreed fans, ducting, controls, dedicated supply, installation and commissioning. For extraction, cross-flow design, humidistat controls and installation details, see the full detail on underfloor ventilation.
After the First World War, cheap land in Ferntree Gully drew people into fibro houses with wood stoves, and postwar urbanisation followed with weatherboards and brick veneers. Most of those homes were built on stumps with a crawl space underneath, and 88.0% of dwellings were separate houses at the 2021 Census. Where the suburb rises towards the hills at around 150 m, sloping blocks give many of them a subfloor that is cramped on one side and roomy on the other.
Damp air collects in the tight, low corners, and passive vents can't reach it. A powered system pulls it out: fans placed where the air stalls, inlet vents opposite, and a humidistat that switches on when the moisture rises. The Scoresby Research Institute station, about 11 km away, averaged a July minimum of 5.9 °C over the years from 1948 before closing in August 2026, so winter is the main season. Fans run from an RCD-protected circuit. Parts of Ferntree Gully are in a Bushfire Prone Area and a Bushfire Management Overlay, and new vents in those parts are screened with metal mesh.
A-Grade licensed, REC 33326, fully insured, CEC accredited.
Luke and his team installed our solar panels over the space of 2 days. Great service arrived on time and communicated well, took away all rubbish made sure the place was left tidy and walked me through the app and next steps. Would highly reccomend!
Christie V · Solar install
We cover Boronia, Knoxfield, Lysterfield and Rowville alongside Ferntree Gully, and a job in any of them is quoted on the same basis.
Ferntree Gully falls under Knox, postcode 3156. No permit is needed for standard work of this kind.
It fixes the subfloor moisture that feeds it. If there's an active leak or a drainage problem, that has to be sorted too, ventilation manages humidity, it doesn't stop water coming in.
Tell us about the damp, odour or floor symptoms you have noticed. We’ll assess access, airflow and moisture, then provide a clear ventilation scope where appropriate. Book an assessment or call our Boronia crew to discuss the work.
5.0 from 57 Google reviews
