Graded Roof Batten Treated 50 x 25mm x 3.6m
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Product Details
Graded Roof Batten Treated 50 x 25mm x 3.6m is a length of timber specifically designed for fixing roof tiles or slates, providing a secure and level base for roofing materials. The timber is pressure-treated to resist rot and insect attack, making it suitable for use in exposed roof environments. Its consistent size and grading ensure reliable strength and straightness, which is essential for even tile alignment and a professional finish. Commonly referred to as Treated Blue Graded Roof Batten, the blue colour indicates it meets strict building regulations for roofing applications. This batten is typically fixed horizontally across rafters and is suitable for both new roofs and repairs.
As of August 2026, PriceNailer data confirms that the cheapest price for Graded Roof Batten Treated 50 x 25mm x 3.6m is £2.16 from Selco across 5 suppliers. Prices have decreased by 8.6% over the last 18 months.
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Frequently Asked Questions
How many roof battens do I need per square metre?
The number of battens required depends on your roof tile gauge, typically ranging from 3-5 battens per square metre. For standard concrete tiles with a 300mm gauge, you'll need approximately 3.3 battens per square metre. Always check your tile manufacturer's specifications for exact requirements.
What does the blue colour on treated roof battens mean?
The blue colour indicates that the timber has been pressure-treated with preservative chemicals and meets British Standards for roof construction. This blue staining is proof of treatment penetration and shows the batten is suitable for structural roofing applications under building regulations.
Can I use 50x25mm roof battens for all tile types?
While 50x25mm is the most common size, some heavy tiles like clay pantiles may require larger battens such as 50x38mm for additional strength. Always check your tile manufacturer's installation guide and local building regulations to ensure the batten size is appropriate for your specific roofing material.
How should graded roof battens be fixed to rafters?
Roof battens should be fixed horizontally across rafters using galvanised nails or screws, with at least two fixings per rafter crossing. Ensure battens are straight and level, with consistent spacing as specified by your tile manufacturer. All fixings should penetrate the rafter by at least 40mm for secure attachment.
What's the difference between graded and ungraded roof battens?
Graded roof battens have been strength-tested and sorted to meet specific structural standards, ensuring consistent load-bearing capacity and straightness. Ungraded battens haven't undergone this process and may have inconsistent strength properties, making them unsuitable for structural roofing applications under current building regulations.