"Stubby" wrote in message
. ..
My heat bills are about twice what neighbors pay in similar houses. And, I
get ice dams. So it seems there is heat leaking up into the attic. I
have soffit vents and a ridge vent. So I called 3 insulation contractors.
One said the 6" that is in the attic between the 2x4 joists is fine and
that adding more won't make a big difference. Two others wanted to add
another 6" of cellulose. Pink stuff is more expensive and doesn't fill
nooks and crannies as well.

My walls have 2" insulation which was standard back in 1970 when the house
was built. I replaced all the windows with double pane vinyl windows.
That was years ago and it did make a difference. I have a large aluminum
frame slider that I cover with film for insulation.

I'm hesitant to spend $1600 on additional insulation if it isn't going to
do anything. Can anyone suggest what is causing the heat loss?
Thanks.

If the pink stuff is cut correctly, there's no reason it won't fill the
spaces nicely. I haven't priced it in years (but I'm about to, this
weekend), so I may be talking through my hat, but wouldn't it be cheaper to
use the pink stuff, and install it yourself?