Call Now

04 0768 8800

Subfloor Ventilation Experts in Sydney— Stop Damp, Mould, and Musty Odours

We diagnose moisture issues, design a custom ventilation system, and install low-noise fans that protect your home from rot, allergens, and structural damage.

Free Moisture & Damp Assessment

    No obligation. We’ll call within 1 business day.

    We Work with

    Hidden Damage Under Your Floors

    A correctly engineered subfloor ventilation system removes moisture-laden air and replaces it with fresh, dry air — stopping damp at the source.

    Engineered Ventilation That Actually Solves the Problem

    Diagnose. Design. Install.

    Step

    Subfloor Assessment

    Moisture readings, airflow mapping, and access check to identify causes and ventilation paths.
    Step

    System Design

    Balanced extraction using low-noise inline fans, ducting, and weather-proof vents to create consistent crossflow.
    Step

    Professional Installation

    Discreet vents, sealed penetrations, electrical by licensed techs, test and commission, photo report.

    Stop Damp at the Source

    Book your free moisture assessment and tailored ventilation plan

    What you’ll notice after installation

    Service Areas

    Typical configurations and running costs

    Single-zone extract

    Dual-zone crossflow

    Perimeter ducted

    Running cost guide: From roughly the cost of a small light bulb per fan, per day. Fans are designed for continuous or timer-controlled operation.
    Compliance and safety We specify AS/NZS-compliant components, fit RCD-protected circuits, seal penetrations, and ensure bushfire-appropriate external venting where relevant. Before/after proof block

    Title: Real Results, Measured

    This Month’s Offer

    and get a free moisture report with before/after humidity readings, plus $150 off multi-fan installations.

    Frequently Asked Questions

    A fan-assisted system that extracts humid air from under your floors and draws in drier replacement air to keep timber and structure dry.

    Signs include musty smells, mould, cupping floorboards, damp or flaky paint on skirting, condensation, or visible moisture under the house.

    Most homes are completed in 1 day; larger or complex layouts can take 1–2 days.

    We use low-noise inline fans mounted on isolation to minimise vibration. Indoors you typically won’t hear them.

    If true rising damp is present, we’ll advise on complementary treatments. Ventilation addresses humidity and stagnant air that drive mould and timber decay.

    Fans are efficient and often run on timers or humidity controllers. Expect modest running costs.

    10-year fan warranty, 12-month workmanship. Optional annual airflow and moisture check-up.

    Call Now

    04 0768 8800

    Email Address

    mirageconstructions@gmail.com

    Location

    Po Box 753 Rockdale NSW 2216

    Copyright © 2025 Mirage Constructions All rights reserved