Urgent - How to Fill gap under P/Board

[Spinny]

Just realised I have a significant gap at the bottom of the plasterboard either side of my pocket door.

I need to fill this urgently as the flooring people are coming - how can I do this ?

 

I can actually push an LVT strip right through the wall from one side and out of the other. This is a problem because:

1/ I can't have floor leveller running into the door pocket and potentially causing fouling with the bottom of the door inside an inaccessible pocket

2/ This means sound can go straight under the wall despite it having two layers of p/board on each side.

 

So I need something which will close the gap, have reasonable acoustic value, and can be easily fixed in place without a long drying time.

 

Can't use expanding foam as it will expand into and block the pocket.

 

Cut thin strips of something ? ply, timber, plasterboard ? And how to fix them in place ?  Would AC50 be any good to fix something in place ?

[Nickfromwales]

7 minutes ago, Spinny said:

Just realised I have a significant gap at the bottom of the plasterboard either side of my pocket door.

I need to fill this urgently as the flooring people are coming - how can I do this ?

 

I can actually push an LVT strip right through the wall from one side and out of the other. This is a problem because:

1/ I can't have floor leveller running into the door pocket and potentially causing fouling with the bottom of the door inside an inaccessible pocket

2/ This means sound can go straight under the wall despite it having two layers of p/board on each side.

 

So I need something which will close the gap, have reasonable acoustic value, and can be easily fixed in place without a long drying time.

 

Can't use expanding foam as it will expand into and block the pocket.

 

Cut thin strips of something ? ply, timber, plasterboard ? And how to fix them in place ?  Would AC50 be any good to fix something in place ?

They just lay the flooring slightly under, and then your skirting sits on top?

[Spinny]

About 6mm leveller going on the ply, then LVT. Don't want leveller going inside the pocket as no idea what level it might settle at, so need to close the gap to stop leveller running in.

[Spinny]

So I was able to cut a narrow 19mm piece of Habito plasterboard and trim/shape it to fit nicely into the gap. It is actually amazing how the Habito can be ‘sculpted’ with a multi tool. As it is super strong with reinforcing fibres in, it still holds together where standard plasterboard would have crumbled to dust.