I live in an old house with lots of eaves and no insulation. The rafters are 90-100mm deep, and my plan so far has been to put 50mm PIR between them as thats the most I can fit while still allowing a suitable airflow gap.
I’m planning a new roof soon, and I know when its over 25% of the roof that building regs need to be met regarding insulation.
Obviously I can’t meet the U value on my eaves as theres physically no room. I’ve considered a second layer or PIR internally, but the room size and eaves height is already limited.
Has anyone else had a similar issue? Is this a case where It’s probably ok to do just 50mm PIR as thats all I can realistically do?
I don’t want to spend time rippin
