John Brash has updated its Pocket Grading Guide for Roofing Battens following the recent publication of the new British Standard for roofing battens BS5534:2003 +A1: 2010. The Grading Guide sets out the latest grading requirements to meet the new Standard, for roofing battens that have not been pre-graded or there is doubt over the grade. BS5534:2003 +A1: 2010 rectifies an …