2007-12-03 10:01:50 · 5 answers · asked by trace66usa 1 in Home & Garden ➔ Do It Yourself (DIY)
Check out the Owens Corning site for some good information. Also check out the Johm Manville web site which also has some good info.
2007-12-03 10:24:36 · answer #1 · answered by R P A 5 · 2⤊ 0⤋
enough that you cannot see the joists running accros the floor of your attic also know as "r30" if you already have some insulation up there you should contact a professional to get blown fiberglass or cellulose(recycled newspaper) in your attic. Blown insulation works much better then batt insulation because it gets into tighter spots that might not be covered by regular insulation. If you think you can do it yourself i believe home depot has a deal where if you buy 20 bags of cellulose you can use there blower free. That will require atleast 1 large truck for the blower and another vehicle that combined obviously can fit the 20 bags.
2007-12-03 10:26:52 · answer #2 · answered by decjr2006 2 · 4⤊ 0⤋
Go to the Department of Energy web site. They have tables with recommended R values for each region of the country.
2007-12-03 12:50:26 · answer #3 · answered by Glenn C 2 · 1⤊ 0⤋
get the building code for your area. each area is different and depends on location. climate plays a large part in the final decision.
2007-12-03 10:09:27 · answer #4 · answered by Centsible 3 · 1⤊ 0⤋
decjr200 is totally correct. I have marked his answer with thumbs up.
2007-12-03 18:26:51 · answer #5 · answered by Big Deal Maker 7 · 0⤊ 0⤋