Despite clear guidance being readily available concerning the correct installation and maintenance of decks, the reality is that shortcuts are sometimes taken on the substructure (which is not usually visible post-installation). Property owners often make little attempt to clear vegetation and/or debris which accumulates beneath a deck, restricting air movement and trapping water. In addition, it is common for deck joists to be set directly on or very close to the ground.
In due course WPA and TDCA will be working with the Timber Trade Federation to adopt this change in policy across the membership of all three partner associations, so as to help them transition to the new requirements in time for the publication of the revised BS8417 (towards the end of 2020).
Original Article provided by WPA Wood Protection Association