Browse Forums Building Standards; Getting It Right! Re: Decking joists splitting 7Jan 25, 2020 1:13 pm Sorry that was a typo. It’s almost a year and a half since installation. The problems started within a year of it being installed. Just having issues with the landscapers coming out to rectify. I took up one of the boards and the issue is worse than I thought. I’ve been trying to read the standards but there’s a few so not entirely sure which ones are specific. But it seems that screws have to be a minimum of 12.5mm from edge of boards, assuming this would be the same for joists, spacing has to be 8mm for wide boards. The average board spacing is about 4mm. Which is probably why they cupped so much pulling up the screws. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Many thanks for your reply. Yes I am concerned with the work done. I have another problem with my contractor and I hope this next investigation and review with the… 2 21557 Hi, as per the subject. Does anyone have any recommendations for the best value decking oil (Bunning is close to where I live) for a treated pine deck? Thanks 0 28076 ![]() Have you considered fixing a 50x50 galv angle along the bottom of the bearer to act as a ledger for the joists to sit on and then just bugle screwing the joists to the… 4 15177 ![]() |