Roofing batterns are believed to be the only timber product where grading is not consistently applied. But if they fail the consequences can be costly and dangerous. Pre-grading batterns at the sawmill, rather than inexact grading on-site, has not previously been possible but pioneering work and over ?2 million of investment at John Brash has seen the development of such a process and the product is called JBRED. The procedure involves optical and laser scanning to ensure every battern is analysed.

This product appeared in Building Products more than 12 months ago. Please contact John Brash & Co Ltd directly for further details.