after blowing half of saturday in bed with a migrane, having really weird dreams about spinach and tractors, i managed to actually do something to the house.
about 2/3 of the basement ceiling/lower level floor is insulated. had to remove some incredibly dusty/dirty/cobweb ridden tongue and groove siding that was haphazardly placed in spots along the ceiling, likely filling my lungs with all sorts of fun stuff (even though i wore a 3M mask; i don’t believe them to do much of anything).
since i’ve lost any fear of getting fiberglass on me, insulating went pretty quickly. grab a piece, unfold the backing, slide it in place overhead, reach in and slam a bunch of 9/16″ staples along the edge. pretty regularly had fiberglass rubbing all against my arms and neck; no itch. i’ll tell ya, though… get that stuff in a cut and it just plain doesn’t feel right. didn’t itch… didn’t hurt… just felt like there was something there that was wrong. as i’m pretty sure fiberglass doesn’t actually belong inside open wounds, that was the likely culprit. by the time i finished for the evening, the small cut had closed up pretty well. either the blood washed the fiberglass out… or the fiberglass is now part of me, and will give me at least a mild superhuman strength or ability. it happens. i’ve read comic books.
~
today, we tackled part of the attic. not really “demo”, as we’re trying to salvage just about everything up there… but we’re removing it all, down to the studs. then we’re removing many of them, too.
the roof is framed with 2×4s, stick/barn style.

close to a century of gravity, and there are areas of sagging. the sheathing and shingles are about 7 years old, so no sense in removing any of that… we’ll sister larger rafters along the 2×4s, jacking them straight along the way.
the front dormer on the house is currently just cosmetic. i’m not entirely sure why, as it wouldn’t have been difficult to have framed it to be used, rather than how it is now… and actually might have been easier…

so we’ll pull it all out, put in a header and walls, have a nice 10′ x 12′ area that’ll look cool in the new master bedroom.
now here’s where the problems and decisions begin. putting 2×8 rafters along the current 2×4s will give us 7.5″ of space from the deck. for a cathedral ceiling in this area of the country, R38 insulation is recommended . R38c fiberglass is 10.5″ thick + 1″ for air circulation… made to sit in 2×12 framing. yeah, that won’t work. why don’t we just put 2×12s in, instead of 2×8s? because we’d lose quite a bit of legal square footage, keeping the average ceiling height above the bare minimum… and that minimum is a bit on the claustrophobic side.
staying with 2×8s, the most fiberglass we can place would be R21. getting close to R38 with spray polyurethane could probably be done, although the cost is insane. oh, and that 40 year roof would completely lose it’s warranty.
ok, now what? we can go with R19 + prodex foil/foam/foil between the fiberglass and ceiling material, giving us about R33.. using deck vents, we can actually use a 2×6 rafter with the R19 between ‘em (yeah, tight… but breathable with the vents), plus the foil/foam laid completely across the rafters… ceiling flush to the foil/foam insulation… sealed well, and we should be able to keep all that (expensive) heat inside the house during the winter… and have a decent ceiling height.
what about the summer, and trying to keep the house cool? since the prodex (i just keep switching what term i use for the stuff… here, i’ll do it again: FfmF) is primarily a radiant barrier, it should keep what heat gets past the fiberglass, within the fiberglass. since owens corning (the manufacturer of the fiberglass) has no warranty issues with this, nor does the maker of the prodex (sorry, let’s say “foil-polyurethane-foil” this time), nor the manufacturer of the shingles… we should be golden. plus, even with absolutely zero insulation, it was quite bearable during the hottest days of this past summer. keeping warm is more important
if all goes to plan, we’ll use the tongue and groove cedar that we’re removing, on the new ceilings. haven’t worked that into the equation yet, but i’m sure 3/4″ thick cedar has to have some insulating value, right? laid on top of completely sealed (hmmm, what term this time?) thin layer foil/foam insulation, should be at least as good as drywall, right? i dunno… it’ll look nicer, though.
guess that’s the end of decision time, right?
probably not… i’m sure something will come up.
we’ve got a bunch of R19 sitting in the basement, just waiting to go up to the attic. we’ve got a bunch of R13, waiting for the walls (R11 is all that’s called for, here). we even have R13 for the interior walls, between the rooms (sound deadening makes for happy families). gotta get some cellulose to lay heavily under the front dormer (above the front porch), and a ~R14 layer of cellulose between the first floor and 2nd floor/attic, partially for sound deadening, partially for zone heating efficiency.
now we just have to finish tearing it all out…