P5 flying joint between joists

[Digmixfill]

I can see why an unsupported short end flying joint at a floor perimeter is bad, but one elsewhere, glued in between other T&G boards shouldn't be detrimental?

I'm trying to think of ways to lessen waste from off cuts. Not cutting to have a joint on a joist would save a little.

 

Do or don't do?

[LA3222]

Don't do it, floor deck is cheap in the grand scheme of things.

[nod]

It’s normal practice to for ends not to be supported As long as all edges are glued 

I set ours at 600 center’s and they have been fine 

[Digmixfill]

1 for, 1 against. It's like the voices in my head

 

It will be 22mm board and the posis are at 400mm spacing, everything will be fully glued and screwed.

 

@LA3222 It's more about keeping waste down rather than the cost saving. Though any extra sawing time saved is a boon.

 

@nod Building control were happy with the joints in between the joists?

[nod]

Yes BC where fine ALL sites are done like this I set my joists at 600 and they are solid  

 

[Digmixfill]

Happy days. This makes things much simpler.

 

One cut per row and on to the next.

[Oz07]

I've known building control make people nog with like a H frame to support these ends when not on joists. I always try to make them land on joists providing the spacings aren't too crazy around staircases. Was very smug on the job where mine were all ok and bco made the other you need to as above. 

[tonyshouse]

Hate it but if you must a flat noggin under the join 

[nod]

Ask your deck supplier for a technical sheet and show it to BC if they or uncertain 

[Digmixfill]

The Egger fitting guide has this

 

"All short end joints should always fall on the centre of a secured joist,
including perimeter edges. Where this is not the case, please refer to the
relevant building guidelines."

 

Another guide has

 

"All short end joints should always fall on the centre of a secured joist
including perimeter edges. Where this is not the case refer to NHBC
guidelines"

 

And NHBC has

 

 

 

 

Edited May 24, 2021 by Digmixfill

[LA3222]

If you don't support it and then it flexes/squeaks or whatever later on down the line once its covered uo you will be miffed that you did it.

 

I'm just saying why run the risk? Support all the joins and then you can be certain you're not storing up trouble for the future. 

 

As you've demonstrated, all literature says to support them....I dont get why you wouldn't?‍♂️

[Digmixfill]

6 minutes ago, LA3222 said:

As you've demonstrated, all literature says to support them....I dont get why you wouldn't?‍♂️

 

Every second board would have a strip discarded. Just erks me.

[PeterW]

All sides glued and first row always cut to fit joist a spacing then the rest get done as they fall as long as they span over min 2 joists. No squeaks or movement.