The easiest way to see if you needed additional insulation, to begin with, would to have been is to have looked at your roof when there was a decent snowload on it...like back around Christmas time and the time frame right after that. If I remember correctly, you folks got "slammed" with quite a bit of snow during January and February.

You should have been able to compare your roof with any of the neighbors' with similiar lines and slopes. See if you still have snow and at the same thickness/level as they do. If you have more snow and theirs is gone, you're OK to stay. If, however, the snow is gone, you're losing alot of heat up through the attic and at that point, you might want to consider asking an insulation expert what, exactly, you'd need to install.

AAMOF, that's where I'd begin looking first...have a few folks, licensed and bonded, come through and give you an appropriate sense of what you'd really need.

One other simple way of checking if you'd be in the market for, at least, more attic insulation is the "hand test" - and that's just a simple matter of getting up on a decent ladder and placing your hand on the ceiling (that's under the attic area in question) and feeling if it's colder than the room itself...or in the summer time, way warmer than you'd expect. Your comparison would be, then, to place your hand on the wall about a foot or two down from the area you felt on the ceiling. If you don't feel much difference, then don't worry about it...and that's assuming you're satisfied with the way the room feels to you to begin with.

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M. G. Burg
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. . . . . . . . . . . . . . . . . . ~ Yogi Berra ~