Bradford Optimo™ Underfloor Insulation
Bradford Optimo underfloor insulation batts is a premium glasswool insulation batt designed for the underfloors of homes with suspended timber floors. Optimo floor insulation helps reduce draughts, minimise heat loss in winter, and lessen reverberation and noise through the floor cavity for a quieter, more comfortable home. Easy to install, Australian-made, and backed by CSR Bradford's 70-year product performance warranty.
Features and Benefits
Bradford Optimo Batts floor insulation helps keep homes warmer in winter and more stable year-round by insulating the floor and limiting cold air movement from the subfloor. The dense glasswool body also reduces floor echo and noise transmission. Installation is straightforward: batts friction-fit between timber joists and hold their shape; use Optimo Saddles or Straps where joist spacing varies or extra support is needed.
Key Features
Thermal performance
Helps cut heat loss through suspended timber floors for steadier indoor temperatures
Airflow control
Helps limit cold air entering from the subfloor to improve comfort above
Acoustic comfort
Dense glasswool helps reduce reverberation and noise through the floor
Easy to install
Friction-fits between joists for a neat finish; Optimo Saddles or Straps available for support where needed.
Technical Specifications
Optimo Underfloor Batts
Material R-Value | Thickness (mm) | DImensions | Pieces per Pack | m2 per pack | Packs per Multi | Product Code |
2.5 | 90 | 1160mm x 415mm | 8 | 3.851 | 5 | 114650 |
2.5 | 90 | 1160mm x 565mm | 8 | 5.243 | 5 | 114692 |
- Suspended timber floors with an accessible, ventilated subfloor
- Residential and light commercial projects with suspended timber floors
- Retrofits and renovations where underfloor access is available
- New builds seeking improved comfort and efficiency.
Performance Guaranteed


Australian Made
Licensed by Australian Made Campaign Limited to use the Australian Made logo.


90 FBS-1 Glasswool
FBS-1 Glasswool Insulation products are classified as Non-Hazardous according to the Globally Harmonised System (GHS) and Safe Work Australia.


Sensitive Choice
Certified by an independent expert panel to meet the health and safety standards of the Sensitive Choice program for asthma and allergy friendly products.


ISO 9001
Meets the ISO 9001 standards for quality management through independent verification.