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, 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 accredited and individually marked on each batten.
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. (Marking only applies to battens that fall within
the BS 5534:2003 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 |
* sizes indicated require BS Standard marking
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, 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.
CHECKLIST:
|
Other Roofing Battens |
JBI Roofing Battens |
JB-GREEN Roofing Battens (Standard John Brash Battens) |
JB-RED Roofing Battens
(Factory Graded to
BS 5534:2003) | |
|
Dimension (Full Measure) |
Check or Grade on Site |
Done |
Done *** |
Done |
|
Length |
Check or Grade on Site |
Done |
Done |
Done |
|
Knots |
Check or Grade on Site |
Check or Grade on Site |
Check or Grade on Site |
Done |
|
Wane |
Check or Grade on Site |
Check or Grade on Site |
Check or Grade on Site |
Done |
|
Slope of Grain |
Check |
Done |
Done |
Done |
|
Species |
Check or Grade on Site |
Done |
Done |
Done |
|
Fissures |
Check or Grade on Site |
Done * |
Done * |
Done * |
|
Rate of Growth |
Check or Grade on Site |
Done |
Done |
Done |
|
Decay & Insect Attack |
Check or Grade on Site |
Done |
Done |
Done |
|
Treatments (60 year
warranty) BS-8417:2003 |
Check or Grade on Site |
Done |
Done |
Done |
|
Identification & Marking |
Check or Grade on Site |
Done ** |
Done ** |
Done |
|
FSC/PEFC accreditation |
Check with supplier |
Available when ordering |
PEFC accredited and individually marked |
FSC or PEFC accredited and individually marked |
* Graded at point of manufacture, end splits can occasionally subsequently
occur.
** Marked with TB33, the John Brash mark for battens that require a final grade
on site.
*** Improved machined finish.
John Brash offer battens that are high quality, competitively priced and in stock
for rapid delivery. John Brash Battens are recognised as the premier market leading
brand in the industry, offering consistently high quality product and service.
Most importantly all John Brash battens are either fully graded, or suitable
for final grading on site
Service:
All products are available from stock or via our network of distributors. Stillage
deliveries and self unloading crane vehicles are available.
John Brash maintains large stocks to enable a rapid delivery service. Full technical
support is available from the sales office, alongside a full range of literature
and point of sale materials.
