Plastering over the end of hollowcore

[MortarThePoint]

@Conor I pinched part of one of you pictures above. How did your plasterer deal with the ends of the hollowcore? I have this in some places too.

[Conor]

We gyplined over it 😄 

 

Alternative would to spend a day with a kango chipping it right back. We didn't do any wet palstering at all so no idea how you'd fill the ends - I'm guessing expanding foam the trim back.

[MortarThePoint]

5 minutes ago, Conor said:

I'm guessing expanding foam the trim back.

I'm avoiding spray foam so not that. It does overhang slightly in one area.

 

I need to wet plaster so more tricky. 

 

@nod any tips?

[Canski]

 I seem to remember years ago filling these in with snapped headers and lots of mortar.

[nod]

9 minutes ago, MortarThePoint said:

I'm avoiding spray foam so not that. It does overhang slightly in one area.

 

I need to wet plaster so more tricky. 

 

@nod any tips?

We normally just nip the edges every 50 mil top and bottom with a grinder and break off with a chisel Hours topps

Then fix a a sheet of stainless mesh over 2.4 x 600 Then scratch over Don’t fill the holes prior 

[MortarThePoint]

On 07/04/2023 at 13:57, nod said:

Then fix a a sheet of stainless mesh over 2.4 x 600 Then scratch over Don’t fill the holes prior

 

Is it Stainless mesh because it's not sealed on the other side?

[nod]

16 minutes ago, MortarThePoint said:

 

Is it Stainless mesh because it's not sealed on the other side?

It just stops it rusting over time 

We normally use stainless screws and 40 mil washers 

 

A galvanized mesh is ok also if your having trouble getting stainless 

But stick with stainless fixings 

Edited April 15, 2023 by nod

[MortarThePoint]

On 15/04/2023 at 08:48, nod said:

It just stops it rusting over time 

We normally use stainless screws and 40 mil washers 

 

A galvanized mesh is ok also if your having trouble getting stainless 

But stick with stainless fixings 

Is that because of the hollow core holes or would you use stainless mesh when meshing other interior walls

[nod]

6 minutes ago, MortarThePoint said:

Is that because of the hollow core holes or would you use stainless mesh when meshing other interior walls

Mainly the hollow core 

Anything internal can have a board over it 

You can also mesh and render over plasterboard internally 

[MortarThePoint]

3 hours ago, nod said:

Mainly the hollow core 

Anything internal can have a board over it 

You can also mesh and render over plasterboard internally 

Ah, the hollow core holes I asked about are internal but in a wall to be wet plastered. So should that be stainless mesh if outside being rendered and galvanised mesh inside if being wet plastered? Or still go with stainless mesh if covering hollow core holes, but galvanised mesh OK internally elsewhere?

[nod]

Yes 

Galvy internal Stainless external