Bradford Roof Valve & Roof Valve BAL Roof Ventilator
Bradford Roof Valve is a low-profile, static roof ventilator (no turbine) that quietly releases air from the roof space without using electricity. It's ideal above ceiling or exhaust fans, making it a simple way to remove air from bathrooms, kitchens and laundries through the roof.
For homes in bushfire-prone areas, Roof Valve BAL offers the same neat look with added bushfire confidence. When installed to specification, it is suitable for BAL 12.5-40, providing a compliant outlet for 150 mm ducted exhaust in wet areas while maintaining always-on ventilation. Australian made and tested, and supported by CSR Bradford technical advice and warranty.
Features and Benefits
Bradford Roof Valve products help control heat and moisture in the roof space so ceiling insulation works better and the risk of condensation, mould and musty odours is reduced. Because they're passive, there are no running costs or wiring, and the low-profile ASA plastic head sits neatly near the ridge on metal or tiled roofs.
Key Features
Bushfire protection
Suitable for BAL 12.5-40 when installed to specification (BAL model)
Heat and moisture management
Helps reduce heat load and the risk of condensation in the roof space
Energy efficient
Ventilates without electricity
Easy to install
Low-profile design for most metal and tiled roofs; 150 mm duct collar accepts standard flexible duct


Range
Available in clear or black options.
Roof Valve
Low-profile static vent with 150 mm duct collar for roof-space ventilation or ducted exhaust termination from wet areas (bathroom, kitchen, laundry)
Roof Valve BAL
BAL-rated, low-profile static vent for roof-space ventilation or as a 150 mm ducted exhaust outlet for bathrooms, kitchens and laundries. Australian made and compliant with AS 3959:2018 when installed to specification.
Technical Specifications
Colour | Roof Valve Product Code | Roof Valve BAL Product Code |
Clear | 468467 | |
Night Sky | 466758 | 481167 |
Roof Valve Static Ventilator Product Specifications
General | |
Ventilator Type | Static Ventilator |
Varipitch Diameter | 150 mm |
Minimum Open Area | 17,783 mm² |
Product Weight | 0.8 kg |
Roof Pitch | Tiled Roofs: 15° to 35° Metal Sheet Roofs: 3° to 35° Note: Where applicable all roof pitches must comply to AS1562.1, the NCC & Australian Standards weatherproofing requirements within the ranges above. |
Roof Valve BAL Static Ventilator Product Specifications
General | |
Ventilator Type | Static BAL Ventilator |
Head Diameter | 270.3 mm |
Collar Diameter | 147.0 mm |
Product Weight | 0.8 kg |
Roof Pitch | Tiled Roofs: 15° to 35° Metal Sheet Roofs: 3° to 35° Note: Where applicable all roof pitches must comply to AS1562.1, the NCC & Australian Standards weatherproofing requirements within the ranges above. |
Open Surface Area | 7400mm² |
Material | Roof Valve | Roof Valve BAL |
Ventilator Head | ASA | Aluminium |
Flashing | Aluminium (0.7mm thickness) | Stainless Steel Woven Mesh |
Flashing | Aluminium (0.7mm thickness) |
- Exhaustion of heat and moisture from the wet areas of the home
- Suitable for kitchen rangehoods, the laundry, or bathrooms
- Above ceiling or exhaust fans
- Suitable for metal and tiled roofs
- Residential homes and commercial/public buildings.
Performance Guaranteed


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


Bradford 90 Years
Bradford has been trusted for over 90 years, with products engineered to deliver superior performance in insulation and ventilation systems.


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.