<html><body><span style="font-family:Verdana; color:#000000; font-size:10pt;"><div>1865 farmhouse renovation- completely gutted second floor (approx. 500 sq.ft), the plan is to have a 'cathedral' ceiling (really more like a fisher-price church!) to at least make the small space feel a little bigger. We had to sister in new rafters, and 2x6s were as wide as we could get while still having usable space (the original rafters were roundwood, maybe 4" in diameter- I'm pretty amazed the roof has stayed up for 100+ years). The roof was not previously vented, and there isn't a realistic way to vent it now. My research suggests that sprayed closed cell polyurethane is the only way to go to insulate an un-vented cathedral ceiling. Not my ideal choice- the first floor was wet-sprayed cellulose, and we've been happy with that- but I haven't found any alternatives. In addition to not being thrilled with the composition, the cost of urethane is pretty high (though not unmanageable). I have read a suggestion of spraying a couple inches of urethane, then filling the rest of the space with fiberglas (also not my favorite stuff)- seems to me that still creates a potential for a moisture issue. Any alternative ideas would be welcome (except taking the entire roof off and rebuilding in a different way- in a perfect world, sure, but it isn't feasible).<br>Thanks<br></div></span></body></html>