30 Oct '12, 10am

On me way 2 Retro expo to give a talk. I expect to talk a lot about use of expanding foam! This is useful reading:

When shopping for spray foam insulation, many builders and homeowners are uncertain whether to choose an open-cell product or a closed-cell product. In my opinion, the choice is clear: for above-grade residential applications, the best choice is usually open-cell foam. In most cases, open-cell foam will be more economical, more flexible, and more forgiving with moisture than closed-cell foam. Open-cell spray foam is often called “half-pound foam,” a reference to its usual density of 0.5 lb. per cubic foot. (The range of densities for open-cell foam actually extends from 0.5 up to 1.7 lb. per cubic foot.) Open-cell foam was first introduced to the market in 1986 by Icynene. At that time, all of the available spray foam products on the market were closed-cell foams. Since about 2003, however, many manufacturers have been marketing both open-cell and closed-cell foams. More v...

Full article: http://www.greenbuildingadvisor.com/blogs/dept/green-buil...

Tweets

Closed cell spray foam in new commercial constr...

greenbuildingadvisor.com 05 Nov '12, 10pm

Hi I would appreciate some input on the wall and roof assembly of a new commercial building in the Buffalo, NY area (clima...

The US Open comes to #Philly for the 1st time s...

usga.org 31 Oct '12, 2pm

Renew Your Club’s USGA Membership Join the USGA as a Golf Course Join the USGA as a Non-Real Estate Club Join the USGA as ...

How bad is it to use Polyiso on the deck and spray foam on the bottom? #green

How bad is it to use Polyiso on the deck and sp...

greenbuildingadvisor.com 25 Oct '12, 2pm

I am having my "flat" roof EPDM rubber roof replaced, which right now is only insulated by whatever amount of polyiso foam...

wherein @gilesgoatboy nails it

gilesbowkett.blogspot.com 30 Oct '12, 8pm

The biggest problem with Markdown: John Gruber. ...the fact that there has been no improvement whatsoever to the specifica...

How to fill the smallest of cracks with foam or...

greenbuildingadvisor.com 23 Oct '12, 3pm

I'm trying to fill some small spaces in between 2 x 6 roof decking that sits on top of finished timber frame rafters at th...