OK. Question from planninportal.gov.uk.
I'm trying to figure out how to build my eaves. (PIR foam between and under rafters, wall cavity partial fill, unventilated roof, open interior roof space). This guideline (pic from UK planning portal), seems to fit the bill. I'm supposing rafters would be birdmouthed over the wall plate, but in this picture they seem to be floating mysteriously above it?
What's going on? Do I need lighter than air rafters?
http://www.planningportal.gov.uk/uploads/br/masonry_cavity_wall_insulation_illustrations.pdf[/url]
I'm trying to figure out how to build my eaves. (PIR foam between and under rafters, wall cavity partial fill, unventilated roof, open interior roof space). This guideline (pic from UK planning portal), seems to fit the bill. I'm supposing rafters would be birdmouthed over the wall plate, but in this picture they seem to be floating mysteriously above it?
What's going on? Do I need lighter than air rafters?
http://www.planningportal.gov.uk/uploads/br/masonry_cavity_wall_insulation_illustrations.pdf[/url]