I have to remove yellow tongue chipboard in the bathroom and will replace with Scyon Secura Interior. The chipboard was rotten in the shower area and there was cracking in the floor tiles, probably due to movement of the chipboard and perhaps bounce as well and maybe the reactive clay too.

A bunch of blocking (LVL) into joists 100 x 50 (probably hardwood with pre-drilling) is needed to stiffen things up as well as to provide adequate support for the new Scyon and the remaining yellow tongue chipboard cut edges.

Rather than skew nailing, which risks splitting the 100mm x 45mm LVL, how about end nailing through the joists in a staggered manner using 100mm x 4mm nails, 3 at each end?

Here's a diagram showing LVL blocking and Scyon sheeting, would appreciate (constructive) comments, thanks.

LVLScyon.jpg
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