experts in whole home ventilation sub floor damp condensation control mould prevention musty smell prevention trapped heat extraction

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(02) 9427 8800
eXperts in home ventilation, sub floor damp, mould, condensation control + heat extraction
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Xchange air has the solutions to make your home healthier

Underfloor Insulation Sydney

Create a warmer, drier and more energy-efficient home with professionally installed subfloor insulation from Xchange Air.

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Experience superior comfort, energy savings, and service backed by real customer satisfaction.

Benefits of Underfloor Insulation

Timber floors look beautiful, but without insulation, they can allow cold air and moisture to rise into your home, and let valuable heat escape.

Installing high-quality underfloor insulation creates a protective barrier, helping you enjoy a more comfortable, energy-efficient home with benefits such as:

Our insulation works like a double-glazed window, the air gap between your floor and the insulation blanket provides the barrier that keeps your home more comfortable.
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  • Year-round comfort: Maintain consistent indoor temperatures, regardless of the weather.
  • Lower energy bills: Reduce heat loss through timber floors, cutting down on heating and cooling costs.
  • Reduced draughts: Stop cold air rising from your subfloor and seal gaps that make floors uncomfortable.
  • Improved air quality: Helps block moisture, condensation and dust, supporting a healthier home environment.
  • Enhanced soundproofing: Absorbs noise and makes your home quieter and more peaceful.
  • Increased property value: Energy-efficient homes are more attractive to buyers and can boost your property’s appeal.
  • Sustainability: By reducing the energy needed to heat and cool your home, you lower your carbon footprint and make your home more eco-friendly.

Premium Australian-Made Subfloor Insulation

At Xchange Air, we proudly use Australian-made subfloor insulation designed specifically for local conditions.

R-Value:

R 2.04 Inwards / R 2.63 Outwards (similar to roof insulation ratings)

Durable & long-lasting

won’t sag or collapse

Safe & compliant

with Australian Standards

Acoustic benefits

reduces noise transfer through timber floors
This ensures your investment delivers maximum performance for decades to come.

How Underfloor Insulation is Installed

Our trained technicians install insulation blankets neatly between the joists under your timber floor, leaving a 100mm air gap to optimise thermal efficiency.

We install insulation alongside our subfloor ventilation systems, giving your home complete protection against moisture, mould and energy loss.

Who Benefits Most from Underfloor Insulation?

Underfloor insulation is ideal for homes with:

Timber or suspended floors

Older homes without floor insulation

Cold draughts rising from the subfloor

Rooms above damp or poorly ventilated areas

Mould thrives in humidity
10 %

Mould requires 70-90% humity to trive which is common in the coast regions of Australia.

What our Customers Say

“We first had the subfloor ventilation and subfloor insulation installed to combat the mould and moisture problem we had under the house that also had started to creep in to the house.”
Mick Waterloo NSW
“After the positive pressure install we’re even comfortable during the night when the temps currently drop to 0 degrees … We’re very happy with both installs …”
AnnaWestleigh NSW
“The difference your installations have made are very noticeable, and we are delighted with the end result.”
Gerry & InaCastle Cove NSW

Frequently Asked Questions (FAQs)

Is underfloor insulation worth it?
Yes! By reducing heat loss through timber floors, insulation can lower energy bills and improve comfort in winter and summer.
The price depends on the size of your home and accessibility of the subfloor. We provide free on-site assessments and quotes.
Most installations are completed in just one day with minimal disruption.
Absolutely. In fact, we recommend combining insulation with a ventilation system for the best results in controlling moisture and improving indoor air quality.
We only use premium Australian-made insulation designed for local climate conditions, giving you reliable thermal and acoustic performance.

Get a Free Measure & Quote for your Underfloor Insulation

Don’t put up with cold floors and wasted energy. Contact the team at Xchange Air today and experience the difference professional underfloor insulation can make.
Call us on (02) 9427 8800
Book Your Free Underfloor Insulation Assessment

Underfloor Insulation Projects

Sub Floor Ventilation:

At xchange air there are a number of sub floor products we install to suit every type, size and shape of home. These mechanical ventilation systems we install will be located under your floor and are there to protect your home from damp musty smells, mould + mildew, termites and help protect your timber floors from the damp ground beneath. Our Ultrafan range of ventilation systems are designed to create a constant cross flow of fresh air beneath your floors to stop the damp, moist air from entering the living areas of your home. Sub floor damp is very common but if you don’t treat it correctly it can have a very damaging effect on people’s homes and health
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POSITIVE INPUT VENTILATION

Essentially the concept of our whole home ventilation systems (PIV) is the introduce fresh, filtered air into the dwelling at a continuous rate, encouraging movement of air from inside to outside.

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POSITIVE PRESSURE VENTILATION

This system is designed to introduce clean, dry, healthy air into our homes. This is the only system on the Australian market that can heat the incoming air if the temperature drops too much.

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Subfloor Insulation

They say that you gain 15% of the cold in your home through a timber floor and you lose 20% of your heat through your floor. Save on your energy consumption and insulate your floors! We use the latest and greatest products! 1) Fibre-free, non-allergenic 2) Helps achieve a 6-star house energy rating 3) Anti-bacterial and anti-fungal and; 4) Rodent and insect resistant. Call our office on 9427 8800 to find out more on this and all our other amazing cost saving products for keeping your home warmer, dryer, fresher this winter!
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Real Estates or Strata Companies

With over 17 years’ experience in the industry and a very strong database of Real Estates and Strata Companies we understand and value the importance of the confidential nature of our relationship with you.
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