The usual rules of courtesy apply:
1. Be nice.
2. If you can't be nice, be polite.
3. If you can't be nice or polite — well, please be brief.
To attach a photo or illustration:
Under the box labeled "More explanation," look for the words "File attachments."
Click that, and you should be able to attach a photo.
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PassivHaus is a standard of construction that yields extremely tight envelopes and low energy use.
The PassivHaus Institute is in Germany, but we have a branch here in North America as well, Passive House Institute US