Quick question regarding visqueen

[Jrobb2000]

Hi.

I have 600mm stone rubble filled walls. I am planning to build stud walls throughout the whole house (external walls only), and install kingspan between joists leaving a cavity to the loft space. I understand I have to install visqueen on the warm side of the kingspan my question is how do I terminate the visqueen at the top and bottom??

The floors are both contrete and suspended timer.

Any recommendation of visqueen grade??

Help is much appreciated.

Cheers, jj

 

[^woody^]

If you are using foil backed insulation, then you can just tape the joints and do away with a separate polythene vapour barrier.

Top and bottom edges can be taped, masticed (is that a word?) or just left butted