Roof battens are long strips of either steel or timber that are fixed across the roof trusses or rafters. They create a framework to support the roof covering, such as metal sheets, cladding or tiles. Battens can also be used in walls to provide additional strength and stability.
Understanding what roof battens are can help you make an informed decision for your construction project. This blog explores the function of roof battens, the different types and the factors that affect their installation.
The Role of Roof Battens
- Roof Covering Support: The primary purpose of roof battens is to provide a secure fixing for the roof covering materials. Battens are fastened to the roof structure and provide a level, reliable foundation to attach the sheets or tiles to the underlying roof structure.
- Load Distribution: Roof battens help distribute the weight of roofing materials across the whole roof structure. This prevents any potential damage and stress to the roof.
- Ventilation: Battens also create airflow between the roof covering and the insulation layers. This dissipates heat and moisture, preventing the risk of mould or condensation in the ceiling.
- Creates Insulation Cavity: Additionally, battens create room in the roof structure for insulation to be installed.
- Wall Support: While battens are primarily used in roofing, they can also be used in wall cladding and ceiling for support.
The Role of Roof Battens
- Roof Covering Support: The primary purpose of roof battens is to provide a secure fixing for the roof covering materials. Battens are fastened to the roof structure and provide a level, reliable foundation to attach the sheets or tiles to the underlying roof structure.
- Load Distribution: Roof battens help distribute the weight of roofing materials across the whole roof structure. This prevents any potential damage and stress to the roof.
- Ventilation: Battens also create airflow between the roof covering and the insulation layers. This dissipates heat and moisture, preventing the risk of mould or condensation in the ceiling.
- Creates Insulation Cavity: Additionally, battens create room in the roof structure for insulation to be installed.
- Wall Support: While battens are primarily used in roofing, they can also be used in wall cladding and ceiling for support.
Timber vs Steel Roof Battens: A Side-by-Side Comparison
The most common materials used for roof battens in Australia are timber and steel. Timber roof battens are typically made from treated pine or hardwood. Steel battens are a popular choice in harsh environments and areas prone to bushfire, like Australia. They offer a lightweight and durable option that is also resistant to wrapping or splitting.
Here is a quick comparison of key differences between timber and steel roof battens:
| Steel Roof Battens | Timber Roof Battens | |
|---|---|---|
Durability |
Can last over 100 years. Resistant to pests, decay and rot. |
Susceptible to pests and rot if not treated properly. |
Strength |
High strength-to-weight ratio for heavier loads. |
Lower strength-to-weight ratio |
Cost |
Higher raw material and installation costs. |
More affordable upfront costs, but more ongoing maintenance costs. |
Fire Resistance |
Non-combustible. |
Flammable but can be treated. |
Environmental Sustainability |
Natural product from a renewable resource. Can be sourced from a sustainable supplier |
Recyclable but more energy-intensive to produce. |
Roof Batten Sizes and Spacing
Getting roof battens installed correctly is crucial for a roof’s stability and durability. The spacing between battens will vary depending on the type of roofing material you’re using and the weight it needs to support. Other factors that affect the size and spacing of roof battens include the roof covering, house design, location, structural information and Australian building standards. A structural engineer will need to take all this into account and calculate the amount of roof battens needed.
Need Steel Roof Battens for Your Home?
For steel roof battens that provide strong, long-lasting support, choose Dynamic Steelform. We manufacture our battens using galvanised steel, making them resistant to moisture, fire and pests. Our roofing battens are designed to be easily lapped, so you won’t need to cut them on-site. This ensures quicker and hassle-free installation. Get in touch with our team to discuss your building project today.