21 Feb '12, 2pm

Green Building Q&A: Unvented attic w/ OCSF

Newbie here with a design question. Planning a retirement home about one hour west of Ft. Worth, TX, (Gordon,TX) climate 3B I believe. Having trouble with the proper unvented roof design using, as I'm told by most of the approved builders in my development, open cell sf (spot leaks if any develop). What are my most practicable, cost efficient methods of : 1) achieving my required R code value in the roof (R38 roof/R15 walls per USDOE website) 2) eliminating thermal bridging (if that is a concern in climate 3B?) 3) Use ADA air sealing of sheetrock A portion of the roof will be a cathedral great room, the remaining attic will have the mechanicals in it. My understanding is I cannot use poliso (as in a vented Hunter panel) over the open cell under the roof deck. Roof will most likely be composite shingles or metal panels, if budget allows. My real concerns is the extreme summ...

Full article: http://www.greenbuildingadvisor.com/community/forum/energ...

Tweets

Building an Unvented Crawl Space

Building an Unvented Crawl Space

greenbuildingadvisor.com 25 Feb '12, 1am

The IRC has always called them "Closed" crawl spaces, and I consider it to be the better and more accurate term. A "Sealed...

Green Building Q&A: Any logical reason for a du...

greenbuildingadvisor.com 18 Feb '12, 5pm

I was helping a friend move seasonal items into the unconditional attic of a rental house she is moving into (zone 5a), I ...

Green Building Q&A: Best way to insulate attic ...

greenbuildingadvisor.com 18 Feb '12, 11pm

I live in a 1921 brick and stucco house in climate zone 5a. It has a gable roof with 2 large shed dormers (1 front, 1 rear...

Green Building Q&A: Assistance with Attic Mold ...

greenbuildingadvisor.com 18 Feb '12, 2am

• Shutting off the humidifiers to stop the humidity – something that by most accounts we shouldn’t really have installed h...

Proyecto de cubiertas vegetales en Stuttgart

Proyecto de cubiertas vegetales en Stuttgart

greenroofs.com 20 Feb '12, 2pm

EnBW Energie Baden-Württemberg AG, or simply EnBW, supplies its customers with reliable, economical, and environmentally-f...

Open cell SPF in an attic with no vapor barrier...

greenbuildingadvisor.com 27 Feb '12, 2am

I live in Pittsburgh and am doing a renovation of an old home. I'm doing a lot of the work so far myself, with the help of...