PIR quality

[Russell griffiths]

7 hours ago, Ed Davies said:

From what I've read elsewhere PIR tends to shrink anyway given enough time so it might actually be better for long-term lack of thermal bypass to have stuff like this if it's already done all the shrinking it's likely to do. This is a major reason I plan to have a separate airtightness layer rather than taping the PIR foil.

My exact thoughts art this moment, I would be happy re,trimming to get a square edge back, I just want the supplier to know I’m not happy and send me some free goodies. 

[Russell griffiths]

My stuff that has shrunk is called ECOTHERM. 

50mm perfect

70mm terrible. 

[PeterW]

Speak to the merchant - it’s normally pretty good quality.