JB Green & JBI
JB-GREEN - traditional roofing battens
Why JB-GREEN?
JB-GREEN is our traditional batten that has been used for many years and is fully graded to all aspects of BS 5534:2003+A1:2010 with the exception of a final grade for knots and wane, which must be carried out on site. This batten is now machined to improve its consistency in dimension and handling.
JB-GREEN is fully marked with manufacturer, size, species and grade. The TB33 marking is the John Brash code to indicate that a final grade for knots and wane is required.
All JB-GREEN battens are PEFC or FSC accredited.
JB-GREEN is only produced from side boards where the knots are straightforward to assess. It is in principal square-edged.
Part of the JB-GREEN range includes traditionally used sizes that are no longer recognized in BS 5534:2003+A1:2010 (Marking only applies to battens that fall within the BS 5534:2003 +A1:2010 table of sizes - see Table 2).
Packaging:
All timber from John Brash comes in small, easy to handle packs of approximately 1.5m3:
Table 2
|
Batten Size
MMxMM |
Linear Metres
Per M3 |
Pieces Per Bundle |
Bundles Per Pack |
|
19x38 * |
1385.04 |
10 |
48 |
|
19x50 * |
1052.63 |
10 |
36 |
|
25x38 ** |
1052.63 |
10 |
40 |
|
25x50 ** |
800.00 |
10 |
30 |
Storage:
JB-Green Roofing Battens can be safely stored outdoors. The battens will weather but this does not affect their life span. The green colour will first darken and then bleach to a grey colour. Battens should always be safely stacked and stocks should be rotated.
JB-GREEN:
- Meets all the requirements of BS 5534:2003+A1:2010, with the exception of a final grade for knots & wane
- Marked showing supplier, size, specie, grade (TB33) and treatment
- Manufactured from high grade European Redwood (PNSY) or European Whitewood (WPCA)
- Treated to BS 8417:2003, using Osmose Naturewood
- Carries 60 year lifetime warranty against insect attack and wood rotting fungi (when used above dpc)
- Packaged in easy to handle bundles of 10
JBI:
JBI is our most popular product and has all the features of JB-GREEN but is a sawn batten rather than machined.
For advice regarding grading on site consult the handy, pocket sized John Brash Grading Guide (updated version available shortly).
Most importantly all John Brash battens are either fully graded, or suitable for final grading on site.




