Green attic insulation Questions

How does Icynene on the attic roofline/sillplate compare to old fashioned fiberglass or blown insulation?

— Allyn McCormick Rochester, NY

Harold Remlinger, AIA, LEED AP, NCARB

Answered by Harold Remlinger, AIA, LEED AP, NCARB

Warren, MI

remlinger_Architekts, Plc

November 28, 2011

How does Icynene on the attic roofline/sillplate compare to old fashioned fiberglass or blown insulation?

— Allyn McCormick Rochester, NY

Answered by Harold Remlinger, AIA, LEED AP, NCARB on November 28, 2011

Should the attic be vented or unvented in a new home with spray foam?

— Jevon Warner Robins, GA

Answered by Ted Kidd on November 21, 2011

Had a few insulation companies come in and they suggest foaming over my vents. They said ventilation in attics is a thing of the past.

— Michele Garden City, NY

Answered by David Willson on October 21, 2011

I am thinking of supplementing the fiberglass insulation in my attic.

— Jerry H. Hopkins, SC

Answered by Michael Holcomb on September 22, 2011

Architect spec'd 6" of open cell foam in rafter cavities directly below roof. At what thickness does OC foam become enough?

— Paul McTrim Hilton Head Island, SC

Answered by Jason Kliwinski on April 4, 2011

Which is best for an attic: closed or open cell spray foam?

— Karen Zebulon, NC

Answered by Matthew McCullough on February 22, 2011

Closed or open cell foam in our to-be-finished attic in Maine? And what kind of venting is necessary?

— BHNelson Westbrook, ME

Answered by Matthew McCullough on February 22, 2011

I need to insulate my attic in South Carolina. The house was built in 1984 and remodeled in 2004.

— John Mosher Hilton Head Island, SC

Answered by Matthew McCullough on February 22, 2011

Which one is better in the attic: cellulose or rigid foam board?

— Felix Laredo, TX

Answered by Randy Potter on January 27, 2011

I have a 1946 Cape Cod in Indiana with an unvented attic. I want to insulate the house with foam. Should I use open or closed cell foam?

— David Mills Indianapolis, IN

Answered by Kevin Holdridge on December 20, 2010

 

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