Hollowcore

[RossH]

Hi all,

 

Have found this forum helpful over the last year while completing my self build in Ireland.

 

I am wondering if anyone has advice on the best way to seal Hollowcore ends before pouring the next lift of ICF walls.

 

Currently weighing up a sand and cement mix vs a rockwool plug (both pushed 100mm inside the core). Curious whether there are other better suited options I haven't considered.
 

Thanks

Ross

[saveasteading]

I don't recall ever doing it. But your way seems sensible. Push a plug of rockwool to give a stop  then a sharp sand mix as facing.

[-rick-]

What is your air tightness strategy and target?