I need to insulated the roof of my 104 year old house in QC. The rafters are 2x6, 24 on center.
How do I do this best?
I know I need at least 1" for ventilation, that leaves me with 5" for insulation. Is it possible and smart to use rigid insulation between the rafters? Should I add to the rafters with framing from the inside?
How does one get an R-value of at least 30 when one only has 6" rafters?
Thank you for all tips or hints.
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