Plaster cracks

[Pocster]

26 minutes ago, Ian said:

@pocster

Isn’t this the usual way of doing it: insulation between rafters and wall studs then continuous layer of PIR over the face then battens to create a wiring zone.

So battons over the 'final' pir - plasterboard fixing to that?

[PeterW]

Just now, pocster said:

So battons over the 'final' pir - plasterboard fixing to that?

 

Yes unless you do what we did and go with board between the battens. You’re talking about a cold bridge 50mm square at best that is made up of 200mm of timber - it’s got about the same loss overall as one of your windows so don’t panic ..! Much easier to get a flat finish too. 

 

 

This then has 100mm foil tape over it to form the VCL. 

[Dreadnaught]

@lizzie, found your original post: 

 

 

Edited February 27, 2019 by Dreadnaught