Thursday, 22 January 2015

insulation in attic.


Here is a picture of my attic currently


http://ift.tt/1CGbZUU


The joists are 2x4 with blown in insulation that is pretty sparse in some areas, and there is plywood over most of it. Needless to say it's a source of a lot of wasted electricity, and i have a slight mold problem from all the escaping warm air from my 2nd floor. I'd like to get an R value of somewhere in the 40s (live in maryland) but i'm not sure of the best way to do it since my joists are so short.


the best idea I've had so far was to slowly work my way across bagging up all the blow-in (using respirator, goggles, covering as much skin as possible) and put down R13 faced rolled insulation between the joists which is 3.5" high. I would then lay unfaced R30 on top of that but perpendicular to the joists. There would potentially be a 1/2" gap between the rolled insulation, but i imagine the R30 would kind of sink in between the joists a bit. Does this sound like a good plan?


Also, I'd like to maintain some storage space for things like christmas deccorations and what not along the middle stretch, I don't really care about the spots under the rafters to the sides. To do this, would you recommend running some 2x10s perpendicular to the existing joists in the middle area and then putting plywood on top of that? The R30 is about 9.5" high so it should provide enough space to still achieve an R value of 43 in the entire attic


Thanks for any advice. not really sure what I'm doing here mostly just compiling a plan from lots of googling.







Submitted January 22, 2015 at 11:22PM by 5GallonsOfMayonaise http://ift.tt/1JmVq2D

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