I am wondering if building experts have an opinion in the correct ordering of vapor and air barrier for a small 1 story house in Berkeley CA. We are planning a DER/Passive house retrofit and are…Continue
Started this discussion. Last reply by Glen Gallo May 3, 2014.
It is my understanding that you need an airtight envelope (let's say less than or equal to 0.6 ACH) along with super insulation (whatever R value you need) for best energy performance. However, a…Continue
Started this discussion. Last reply by Brennan Less Jun 20, 2014.
We have a small 1940s single level house (1005sqf) in Berkeley, California that is in need of a deep energy upgrade. Our plans include making the envelope air-tight, increase insulation, make use of…Continue
Started this discussion. Last reply by Kaushal Bharath Raju May 22, 2014.