Underfloor Insulation
Showing all 12 results
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Pink Soundbreak Insulation Batts
$118.80 Buy Now! This product has multiple variants. The options may be chosen on the product page -
Polyester Solutions Polyester Underfloor Insulation Roll
$52.14 – $75.66 Buy Now! This product has multiple variants. The options may be chosen on the product page -
Pink Batts® Floor Insulation Batts
Sale! $145.96 Buy Now! -
High Performance Polyester Acoustic Batts
$77.95 – $112.01 Buy Now! This product has multiple variants. The options may be chosen on the product page -
Greenstuf Polyester Underfloor Insulation
$86.96 – $174.48 Buy Now! This product has multiple variants. The options may be chosen on the product page -
Bradford™ Polymax Acoustic Insulation Batts
From $9.75 p/m2 inc GST Buy Now! This product has multiple variants. The options may be chosen on the product page -
Kingspan Aircell Permifloor Insulation
$676.62 Buy Now! -
Kingspan Aircell Permifloor 500 Insulation
Sale! $414.22 Buy Now! -
Kingspan Kooltherm K3 Floor Board
$682.04 – $955.70 Buy Now! This product has multiple variants. The options may be chosen on the product page -
Knauf Earthwool Underfloor Insulation Batts
$85.87 – $124.98 Buy Now! This product has multiple variants. The options may be chosen on the product page -
Bradford Optimo™ Underfloor Insulation
From $14.33 p/m2 inc GST Buy Now! This product has multiple variants. The options may be chosen on the product page -
Expol Polystyrene Underfloor Insulation
$69.71 – $81.40 Buy Now! This product has multiple variants. The options may be chosen on the product page
Showing all 12 results
What is Underfloor Insulation?
Underfloor insulation generally refers to insulation to underneath the ground floor of a home. This is not to be confused with under soffit, under slab or between floors insulation.
It prevents cooling and heating from escaping through the floors. Even a sealed floor will allow the cold and heat to pass through because of the materials thermal transfer. The bigger the temperature difference between inside and outside, the more you’ll notice that you need underfloor insulation.
How to Choose the Best Underfloor Insulation
The right under floor insulation depends on your floor type, climate, and personal needs.
| Insulation Type | Product Example | Best For | Key Features |
|---|---|---|---|
| Glasswool Batts | Pink Batts Floor Insulation Batts | Excellent thermal insulation | Energy efficiency, soundproofing, moisture resistance |
| Polyester Batts | Greenstuff Polyester Underfloor Insulation, Bradford™ Polymax Acoustic Insulation Batts | Safe, thermal & acoustic insulation | Good thermal & soundproofing, high moisture resistance |
| Polyester Rolls | Polyester Solutions Underfloor Insulation Roll | DIY-friendly, flexible installation | Good thermal & acoustic properties, high moisture resistance |
| Foil-Faced Acoustic Insulation | AngelStep Gold4 & Gold8 – Acoustic | Premium soundproofing & heat reflection | Reflects radiant heat, very high soundproofing, moisture resistance |
| Soundproofing Panels | AngelStep 220, 48P, 630 – Acoustic | Apartments, vinyl floors & carpet tiles | High soundproofing, thermal insulation, moisture resistance |
| High-Performance Thermal Insulation | Kingspan Aircell Permifloor Insulation, Kingspan Aircell Permifloor 500 Insulation | High energy efficiency & floor insulation | Great thermal insulation, soundproofing, high moisture resistance |
| Rigid Floor Insulation Board | Kingspan Kooltherm K3 Floor Board, Expel Polystyrene Underfloor Insulation | High-performance thermal insulation | Excellent thermal insulation, soundproofing, high moisture resistance |
| Earthwool Insulation | Knauf Earthwool Underfloor Insulation Batts | Natural, low-itch insulation | Good thermal & soundproofing, high moisture resistance |
Climate Considerations
Cool-Temperate Climate (Melbourne):
- Cold winters and mild summers mean higher R-values (R2.5 – R3.5) are ideal to retain warmth efficiently.
- Glass wool batts or polyester rolls provide excellent thermal insulation
Warm-Humid Climate (Brisbane & Gold Coast):
- Hot, humid summers and mild winters require breathable insulation that allows airflow while preventing moisture buildup.
- Polyester insulation rolls are a great choice as they are moisture-resistant and mold-resistant.
- Reflective foil insulation can be used to reduce heat buildup in summer while maintaining comfortable temperatures year-round.
Signs Your Home Needs Underfloor Insulation
Here are the top signs you should insulate your floors:
✔️ Your floors feel cold even when the heater is on
✔️ Your energy bills are increasing despite heating/cooling adjustments
✔️ You feel cold drafts around your feet
✔️ Uneven room temperatures – Some areas feel much colder than others