Page 43 - Zero Net Energy Case Study Homes-Volume 2

All window and door glass was specified as double-glazed in response to the relatively mild climate, as opposed to triple-glazing as required to meet the Passive House standards in colder climates. It was determined that the maximum heating and cooling load requirement of the stan- dards could be met by the less expensive type of glazing.
The window and door manufacturer3 was selected based on NFRC certification, availability of the detailed data required to calculate the U-Value for the PHPP and a guarantee of airtightness.
3 Zola clad-wood Arctic line, https://www.zolawindows.com/clad-wood#Slide4
PERLITA PASSIVE HOUSE
CASE STUDY NO. 7
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FIBERGLASS INSULATION IN 31⁄2” CAVITY
FIBERGLASS INSULATION IN 21⁄2” CHANNEL
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Zero Net Energy Case Study Homes: Volume 2
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(Left, top) Exterior wall fram- ing detail at the second floor, which is all new framing.
(Left, bottom) Exterior wall framing and insulation detail at the first floor showing incor- poration of existing 1906 wall studs into the new framing and added insulation on the inside of the wall with offset studs to mitigate thermal bridging;