Nathan,
I've been doing some research and stumbled on some products that have all the components factory assembled, ready for fastening to the old decking. One is called Cool Vent and another is called Cornell Ventilated roof insulation.
Do you know about them?
Does Anyone?
I wouldn't mind paying more if I got a better result.

Regards,

Don


Septuagenarian living in a 200 year old TF house. I don't own it, it owns me.