I've been researching windows and french doors for a little bit now. I'm about ready to take the plunge. In my readings, I've come across so-called Passivhaus certified windows and doors. I've seen wood and fiberglass based products receive Passivhaus certification, but not a vinyl product. Why not?
If energy efficiency and performance are the hallmark of the Passivhaus movement, has any vinyl product received the certification? When I started this window search adventure, I was opposed to vinyl. Much to my surprise, I've come across vinyl windows and doors on the nfrc.org website that surpass performance metrics for wood and fiberglass products. I've also been blown away by how some, e.g. the Sunrise product, simulate the look of wood.
For my own project, I'm 95% leaning toward the Marvin double hung ultimate clad largely due to it fitting the over 100+ year old building I live in. But lord its costly!
In coming to my choice of the Marvin product, I am curious that I've not come across any vinyl Passivhaus window or doors.
This post was edited by ode4minerva on Sun, Mar 2, 14 at 0:19