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Yeah, to say I'm unhappy with what this guy has done is an understatement.

Yeah, and by aiming for air tightness, the empty sections between the bottom of the PIR and eaves walls would not give air tight performance. However, when I questioned the guy about it he said the empty sections would improve airflow and circulation around the loft.. which in part is true.. but...

I've made sure there's a 50mm air gap between the PIR and felt, it's more the large gaps between the bottom edge of the PIR and the eaves walls - installation technique states you should have a continuous seem free installation, which this is not. Am I over reacting, or will this create issues...

Hello, I'm new to DIYnot so I'll be interested to see what some of the more experienced tradesmen have to say here. I've recently had 50mm PIR installed in my cold pitched roof, but I'm concerned about the install. Every manufacturers installation guidelines and tutorial video state there...