29 Oct '12, 7am

Should Mastic Be Applied inside Ducts? #green

Should Mastic Be Applied inside Ducts? #green

We hired a contractor to clean our crawl and seal our ductwork. The company used Hardcast 321 mastic. We are concerned becasue they smeared into the floor vents from above and all around the cold air return. I have attached a couple of pictures. Should mastic be applied inside the ducts like this, is it harmful/toxic?

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

Tweets

One of Six Finalists for MEMS Inside the Machin...

designnews.com 29 Oct '12, 5pm

Beth, these are indeed exciting time for this technology. Windows 8 gives a new boost to the industry by having a new plat...

A slideshow of what's inside #IBMResearch's #superconductor lab: via @eetimes

A slideshow of what's inside #IBMResearch's #su...

eetimes.com 30 Oct '12, 1pm

Slideshow: Inside IBM’s superconductor lab Rick Merritt 10/30/2012 8:00 AM EDT SAN JOSE, Calif. – IBM cited progress in it...