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Question:

What kind of insulation can be added to 20 year old fiberglass in NE cape style house?

House two stories full basement 1500 square feet without unheated basement., Basement 1/3 insulated with cement foundationInsulation fiberglass batsPrimary heat pellet stove used 4 tons to heat 2007/2008 winterOil furnace backupAssume some type of blow in insulation woud help plus question what to do about the unheated uninsulated basement concrete wall which are two thirds uninsulated.

Answer:

Read a recent article by James Dulley, expert on everything, and he stated that no matter what, if you do not insulate your basement walls you are going to have cold air transferHe suggested firring and insulation, plus either drywall or other solid wall coveringAs for the rest of uour place, any kind of blow in insulation will work and not cause a problem for your existing bats, if those are horizontalThe fiberglass is going to give you better R value than cellulose whether blown into wall spaces or on top of batting in attic Right now Home Depot and a couple others are adv compacted blow in fiberglass for 21 cents per foot, don't mention how thick but think that is cubic footThat is cheap compared to roll and battingThey will also either provide for a day or rent you the machine for blowing the insulation inHowever, a word of adviceThis is a three person jobOne to handle the hose, and one to cut the compacted packages into thirds, and one to input those thirds into the machine's hopper/blowerOtherwise you have down time with only one person trying to manage the packagesAnd for heaven's sake, wear more than one of those surgical looking masks; even a cheap filtration mask set up is better than thoseThey fog your glasses, get clogged fast, and don''t really filter the fine particlesA wet bandana would be more effective than the surgical type masks with the rubber band attached by staples on each side.
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