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Attic insulation
To go along with adding the soffit vents I'm looking at adding some insulation to the attic of the house. It currently has 6" of fiberglass insualtion which is supposidly around an R-19. The recommended R value for my area (Wisconsin) is R-49! So, I was thinking of blowing in some cellulose on top of the fiberglass to boost it up to R-49. However, I'm also wondering if it would be worthwhile to go a bit higher than R-49? Does anyone have any info that compares added insulation to energy savings?
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