Even with good ceiling insulation and well-sealed windows, a significant amount of heat loss can still occur through uninsulated walls. In fact, more than 50% of heat loss in some homes can occur through wall cavities.

The same applies in summer, where unwanted external heat penetrates through the walls and cool air escapes, placing additional strain on heating and cooling systems. Wall insulation plays a major role in maintaining comfortable indoor temperatures and reducing energy costs year-round.

Cavity wall insulation – New construction

For new builds, spray foam insulation is applied directly to the cavity wall lining at approximately 90–100mm thickness. Once cured, the foam is trimmed flush, creating a smooth surface ready for plaster installation.

In addition to thermal performance, spray foam insulation also offers:

• Up to 75% noise reduction, ideal for homes close to neighbours or busy areas
• A solution that does not sag or deteriorate over time
• A hypoallergenic option suitable for people with asthma or allergies
• Lower electricity costs and reduced greenhouse gas emissions

All spray foam products used comply with Australian Standards.

Cavity Wall Insulation – Existing Houses

One of the major advantages of spray foam wall insulation is how effectively it can be retrofitted into existing homes.

For existing houses, foam insulation is injected into wall cavities through small access holes, which are then sealed. This method is far less disruptive than traditional insulation materials.

Unlike batts or rigid foam panels, which often require wall linings to be removed, spray foam insulation can be installed without major demolition.

This makes it particularly suitable for:

• Double brick homes
• Brick veneer houses
• Homes where internal wall removal is impractical

Why Choose Spray Foam Wall Insulation?

• Reduces heat loss and heat gain through walls
• Improves indoor comfort in all seasons
• Lowers heating and cooling energy costs
• Reduces noise transfer through walls
• Long-lasting, stable insulation solution
• Environmentally responsible insulation choice

Spray foam insulation combines high thermal performance with air sealing, making it one of the most effective wall insulation solutions available.

Ready to Improve Your Home’s Comfort?

Wall insulation can make your home warmer in winter, cooler in summer, and cheaper to run.