Timber frame VCL detail query

[Annker]

Appreciate any ideas on the following issue to overcome.

When constructing my stick build TF extension I mistakenly left out a strip of VCL that I believe is now (at fit out stage) needed to link together with the VCL proper.

The design for the VCL was either going to be the PIR foil layer taped as required, or the addition of a sheet VCL.

 

My designed TF build up is broadly as section below:

 

 

I'm at the stage now of measuring up insulation and looking back at an old thread I see I missed installing a strip of VCL around the joist ends as per image below:

 

 

 

 

So now I am wondering how best to detail/install the wall VCL at the ceiling/floor joist to wall junction as its now built

Do squares of VCL need to be cut in around each individual joist void pocket and taped to the joists or can the VCL be simply taped along the continuous top plate?  

  

    

 

 

Similarly, at 1st floor ceiling/roof level I'm unsure how the wall VCL should be terminated.

I have a VCL installed externally above the osb, so again I will not be now able to link it to the internal wall VCL.

 

[Redbeard]

44 minutes ago, Annker said:

I'm at the stage now of measuring up insulation and looking back at an old thread I see I missed installing a strip of VCL around the joist ends as per image below:

 

Yes, that's effectively the 'Tony Tray' that many on here have discussed.

45 minutes ago, Annker said:

Do squares of VCL need to be cut in around each individual joist void pocket and taped to the joists

 

Arguably yes, though it won't be as perfect as a Tony Tray

 

46 minutes ago, Annker said:

or can the VCL be simply taped along the continuous top plate?  

 

Which continuous top plate? Not sure I get this bit. Can you explain, perhaps with a felt-tip annotation?

[Annker]

3 minutes ago, Redbeard said:

 

Yes, that's effectively the 'Tony Tray' that many on here have discussed.

 

Arguably yes, though it won't be as perfect as a Tony Tray

 

 

Which continuous top plate? Not sure I get this bit. Can you explain, perhaps with a felt-tip annotation?

Yes the "Tony tray", I had it well researched but must have been rushing and its inclusion was forgotten.

 

By top plate I'm referring to the horizontal top plate of the studded wall.

Basically just end the VCL along the ceiling line, don't fit it in around the joists and tape it along the top plate of the studded wall.

   

The option to have the VCL cut in around the joist will be a bit of a faff alright, however if its required I will do it. 

[Nickfromwales]

23 hours ago, Annker said:

 

The option to have the VCL cut in around the joist will be a bit of a faff alright, however if its required I will do it.

You can spray this with a closed cell foam, and it'll do a better job than trying the PITA and knuckle-scraping with membrane and tape.

 

https://insulation-more.co.uk/products/soudal-soudafoam-maxtwo-polyurethane-spray-foam-insulation-kits-complete-sets

[Annker]

14 minutes ago, Nickfromwales said:

You can spray this with a closed cell foam, and it'll do a better job than trying the PITA and knuckle-scraping with membrane and tape.

 

https://insulation-more.co.uk/products/soudal-soudafoam-maxtwo-polyurethane-spray-foam-insulation-kits-complete-sets

Looks like a good solution but as I've only about a dozen pockets to do it's probably too expensive an option.