Subfloor Noggins

[MortarThePoint]

I'm going to lay T&G OSB and with its long edge perpendicular to joists, any short edges need to land on a joist or I have to add noggins. Same with chipboard I think. If it wasn't for the T&G, I think I'd just take the wastage and cut the sheets to fit the joists rather than adding noggins.

 

What's the best way to do this. I can think of three options in decreasing robustness order:

1. H shape with two noggins between joists and under board's long edges, then a noggin between those where the board's short edge is
2. Just the two noggins between joists and under board's long edges
3. A single noggin under the board's centre line parallel to the board's long edges

Edited May 20, 2024 by MortarThePoint

[nod]

If they are glued You don’t need nogs 

[joe90]

2 minutes ago, nod said:

If they are glued You don’t need nogs 

+1, the t@g supports the edges, you only need noggins if square edged sheets.

[MortarThePoint]

14 minutes ago, nod said:

If they are glued You don’t need nogs

 

11 minutes ago, joe90 said:

14 minutes ago, nod said:

If they are glued You don’t need nogs 

+1, the t@g supports the edges, you only need noggins if square edged sheets

 

That's not what the Sterling osb installation guide says though. Might be right for chipboard 

[MortarThePoint]

@Mr Punter did you use noggins with your 18mm T&G OSB? 

Edited May 20, 2024 by MortarThePoint

[nod]

16 minutes ago, MortarThePoint said:

 

 

That's not what the Sterling osb installation guide says though. Might be right for chipboard 

Use cabba deck then 

[Mr Punter]

On 20/05/2024 at 21:13, MortarThePoint said:

@Mr Punter did you use noggins with your 18mm T&G OSB? 

No I made sure the ends landed on a joist.