T & G floorboard repair

[Coniferman]

I have this in the bathroom which is carpeted. (I know yuk, It needs a complete refit before long)

In the meantime, there has been rework in the past resulting in a cut/join between two pieces of the floorboards. (the big square ones)

It's not a huge problem but there is slight movement where the two pieces are not joined to each other, if I stand in the wrong place.

I know a proper fix, would probably be to cut out a hole and then fix a piece of wood underneath screwed to both pieces and then replace the cut out. The t&g goes under walls etc.

Is there some other quick fix that might work. The gap is only maybe 2mm so I don't know if some sort of glue would work or something else wedged in. Or some other fix?

 

[Nozzle]

Polyurethane expanding wood glue? It's a cross between expanding foam and wood glue. Fills small gaps, and is water proof. Moisten the area first with a fine spray, squidge a bit of glue it, leave it alone to set/expand for 30 mins. Looks a bit like tree sap when in the bottle

Nozzle

 

[foxhole]

I think Nozzle refers to p4 glue, it will not prevent the floor flexing if unsupported though.

 

[Deleted member 174758]

Or was that "D4"? Either way glue, expanding or not doesn't replace a proper repair job as Foxhole says
.
Also worth the OP noting that when you glue stuff together with any glue (D4, polyurethane or otherwise) that there is NO strength in a joint which has gaps in it. Wood joints need to be fairly good before glues get applied

 

[Nozzle]

I re-read the problem some kind of joint defo required - a dowel arrangement?

Nozzle

 

[Deleted member 174758]

I re-read the problem some kind of joint defo required - a dowel arrangement?

In general if you get a piece of flooring which has dropped like it tends to indicate that the problem is one of lack of support. All I'd do is lift the offending piece (if absolutely necessary cut it out), add (i.e. nail or screw) some support battens or noggins to or between the joists at the joints as needed, and if necessary some shim stock to level the floor through, then fix it back down. No glue involved and certainly no dowels. Simple ten minute job in the main