What is Superinsulation?
Attic insulation over R60, wall insulation over R40 (About double code in NYS)
When do you want to superinsulate?
New construction - All - Typically super insulation adds a bit more than 10% to new building costs.
Existing construction - Up to a 10 yr payback or when the emotional benefit of related work makes it "worth it".
FPSF -
Experiences w/
Old House Rehab
It is saving me the $40,000 or so it would cost to underpin the house, install a foundation and insulate it. Nor would this have addressed the rim joist, a major source of heat loss.
For those concerned with vermin and bugs, termites, etc. in the skirt. I've had one element in 3 yrs, in a vermin and bug heavy area, with only a few spiders taking up residence. I suspect in addtion to being pretty well sealed, it's dry and foodless.
We have noticed that we no longer have ants invading the kitchen every spring, and flies infesting the area outside the kitchen in the summer. There might even be fewer mice.
In addition, the boxout is a great ledge for planters at a real easy height to maintain, with the plants and flowers visible from inside.
I'm going to try some parsely and carrots that we can't grow in the garden, the moles keep eating them.
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