[Greenbuilding] Exterior insulation retrofit

[Reuben Deumling]

On Fri, Apr 29, 2011 at 9:58 AM, John Straube <jfstraube at gmail.com> wrote:

> Relatively small impact if you limit the connections to the minimum. We
> lose about 3% with screws doing foam and maybe up to 10% with thin plywood
> webs. Just add an inch if you care.
>
10% relative to what? An ideal wall that has no plywood gussets?
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