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Should we use open cell or closed cell SPF insulation on the underside of our attic roof in southeast Louisiana?

— William Jordan Slidell, LA

Answered by Rick Goyette on May 20, 2010

I am building a new house and trying to decide between the Spider Insulation system vs. spending more for spray foam. What do you recommend?

— Melanie Winston Salem, NC

Answered by Erik Henry on May 19, 2010

What is the best way to insulate an existing frame floor that sits on an on-grade concrete slab? The floor cavities are uninsulated.

— Andrew McDowell Downingtown, PA

Answered by David Lavender on March 18, 2010

I'm building a brick home in a humid climate. I'm confused as to which foam insulation to use for walls/attic: closed or open cell?

— Charles Kent Laurel, MS

Answered by Danny Kelly on March 9, 2010

I want to add wall insulation to my 1920 home. I have two locally available options -- Icynene and Tri-polymer foam. Can you advise me?

— Amy Mudd Louisville, KY

Answered by Alex Georgiou on March 4, 2010

Any advice on installing foam insulation in an RV?

— sandy scott

Answered by Danny Kelly on February 26, 2010

I'm converting my attic into a non-vented conditioned space. Should I use open cell or closed cell foam to insulate?

— Gary Lichtenstein

Answered by Steve Saunders on January 15, 2010

Do you recommend closed cell foam or open cell foam for the undersurface of the roof deck?

— Brad Priester

Answered by David Cook on January 14, 2010

What type of insulation should I use for a new home In Tennessee? Should I use 2x6s for the walls?

— Steve Truelove, Chattanooga, TN

Answered by Richard Reilly on August 6, 2009

Should I leave an air space between my attic insulation and the wood roofing?

— D.L. Bennett, Arlington, VA

Answered by Mike Binder on March 5, 2009

 
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