Vapour Control Barrier

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Hello again

A quick question regarding Vapour control barriers.

Existing walls are double skinned brick, no cavity no insulation, I plan to fix 3x2 battens insulate Between with 50mm celotex.

My question is regarding the VCL.

I read somewhere about taping up the edges of the celotex where it meets the edges of the battens to create a VCL like that.

Is this an accepted method?

If so what tape would I use.

If not acceptable, would I be placing the vcl over the battens or just over the insulation and taping.

If I do place the VCl over the battens then when I screw in my plasterboards won't that damage the vcl?

Many Thanks
 
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Use foil tape for the inso' joints.

You could always use duplex plasterboards for belt and braces.

All vcl's get punctured one way or another.
 

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