1.5 story insulation
I live in a 1.5 story cape cod in the Philadelphia suburbs (Zone 4A) built in the 1950s. As expected the second floor has no air sealing and basically no insulation. I am leaning towards using dense pack cellulose to fill the 2×6 rafters as this will not require a total tear down of the drywall. I know without using a vent channel this would require me to use foam on top of the roof deck with at least R-15. I have read all the articles on the site that have to do with my situation but I still have a few questions about this before I get the work started.
Would it be ok for me to wait a few months between getting the cellulose installed and adding the foam to the top of the roof deck (I need to get a new roof this year as well so the timing works)?
If I add 3″ of foam on top of my roof, would I still be able to add solar panels in the future or would the connection be compromised?
The drywall on the ceiling does not continue along the rafters to the ridge but flattens out in the middle. Should I have the cellulose installers fill this entire triangular area (and of course seal up the existing gable vents)?
Thanks in advance. Love the site.
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