Roof Batten Requirement Calculator
Calculate the number of roof battens you need based on roof area and batten spacing.
For roof or facade substructures, area and batten spacing matter most. This calculator determines the total length and the number of battens needed.
Pro tips
- Batten spacing usually depends on the roof tile or panel format.
- Always plan 5-10% waste for joints and trimming.
Frequently Asked Questions
What batten spacing is typical for a roof?
Spacing depends on the roofing material (e.g. roof tiles) and is usually between 30 and 40 cm – check your specific tile manufacturer's instructions.
How many roof battens do I need?
It depends on the roof area and your chosen batten spacing – the calculator above works out the required number automatically, including a reserve.
What wood is used for roof battens?
Usually pressure-treated spruce or pine in structural timber grade (KVH), since the battens are permanently exposed to weather under the roof covering.
Why is batten spacing so important for roof tiles?
The wrong spacing can prevent tiles from hooking in properly or cause leaks – that's why the manufacturer's coverage width specification matters.