The Dangers Of Inadequate or Ungraded Battens
Roofing battens are one of the few timber construction products where there are
failures. Although few in number, the consequences can be costly and serious,
if not fatal. Failure is due to the widespread practice of using battens which
are below recommended sizes, or which have serious flaws or defects. This means
it may not be possible to secure adequate mechanical fixings into the battens
or the batten may not be able to support the loads on the roof.
- Battens are fundamental to the roof structure. They are load bearing and carry both the load of the roof tiles as well as any other imposed loads such a snow or wind. Importantly they also should also be able to bear the weight of a person walking on the roof after completion (although it is not recommended and crawling boards should always be used, see HSE note 33 working on roofs).
- Battens also should be sufficiently thick - important when looking at the withdrawal resistance of nails.
- They should be an even thickness so that the roof tiles or slates lay evenly.
- They should be treated to BS 8417 and have a 60 year warranty.
In addition inadequate or ungraded battens:
- Have a significant health and safety impact for those working on roofs.
- Could result in the roof having to be replaced.
- May result in the roof tile guarantees becoming invalid
- Cause non compliance with warranty bodies such as NHBC, Zurich, Trustmark, NFRC Co-partnership, Roof Sure, Roof Sure Plus and other Guarantee Schemes invalidating the warranty.
But most importantly they should comply with BS 5534:2003.
We believe our customers, and their workforce, deserve the best.
