actionjackson

I thought I would resurrect this post as I'm faced with a very similar position as you and would be keen to know how it went. I have been researching methods to remove ventilation in our attic roof space (cold roof construction) during a major property renovation and came across this discussion. As we are installing EWI and taking lots of steps to improve U Values and air tightness, I believe the draughty attic is a weak link in our quest. I have shared this "method" with my builder and he has responded with the same questions, especially the detail around the wall plate and how to airtight seal around all the trusses as we simply can't "wrap around" the Tyvek Supro. Any further pointers appreciated.

My building contractor is also suggesting Cortizo sliders on our renovation project (he has them fitted in his own home). Is the view this system is not fit for purpose in the UK climate?