Johnny Jekyll

Advice Needed - Cold Bridge Behind Full Fill PIR Insulation

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15 hours ago, Johnny Jekyll said:

May I ask how you properly seal the cavity at the top?

 

You can use a fireproof barrier like Rockwool cavity sock.  Stuff it in before you get the wall plate and trusses on.  Get your roof insulation to meet with it so you don't have any gaps around the eaves.

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