Aerobarrier booked for Tuesday

[Post and beam]

I have been speaking to Aerobarrier for a couple of months and took the plunge, they arrive this Tuesday to demonstrate how badly or how well a job i did of my airtightness detailing.  Anyone want to predict a before and after score?   SIPs built, 200 square metre Potton framed 2 storey. All of the airtightness work has been done by me, for better or for worse. 

[JohnMo]

1 m³/m² at 50Pa, as found by them.