ryan sentell
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Closed cell foam on underside of my hardwood floor?
8 Replies

I have white oak hardwood floors on an old 1920s house.My contractor is offering to do 2" of closed cell foam on the underside of my hardwood after he does the attic roof.I have no other sub-floor…Continue

Started this discussion. Last reply by Leo Velichkovsky Apr 11, 2011.

 

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Leo Velichkovsky replied to ryan sentell's discussion Closed cell foam on underside of my hardwood floor?
"EPA's / DOE Home Performance with Energy Star protocol (the one intended for existing structures) sets the minimum at R-5 under floors. They do insist, however, on spray-foam insualtion. Makes sence to me, given foam's dual-purpose of…"
Apr 11, 2011
ryan sentell replied to ryan sentell's discussion Closed cell foam on underside of my hardwood floor?
"Texas is hot as hell.    The standard here for attic is R21, and nearly every contractor I've talked to (and that's many) say that getting the R21 with Closed Cell is going to make it ridiculous, putting me in the top…"
Mar 28, 2011
Hal Skinner replied to ryan sentell's discussion Closed cell foam on underside of my hardwood floor?
"Hi Ryan.   Our company is in Texas and we coat attic roof decks and the underside of floors with our coating.  I do not have any picture to show you regarding the underside of wood floors.  I do, however, have a statement from…"
Mar 28, 2011
Pascal Jünger replied to ryan sentell's discussion Closed cell foam on underside of my hardwood floor?
"It would appear the R-rating of this procedure involves a value of 6.0 per inch meaning that your total gain in insulative value would be roughly R-12 which I can tell you from my own experience is somewhat inadequate.  The current Green…"
Mar 27, 2011
Sean Lintow Sr and ryan sentell are now friends
Mar 25, 2011
Sean Lintow Sr replied to ryan sentell's discussion Closed cell foam on underside of my hardwood floor?
"Temp's & humidity do play a roll in the application process, equipment setup, etc... A lot of it depends on the brand chosen, knowledge of crew, equipment choices, etc... So for the most part the contractor is right, it doesn't matter…"
Mar 24, 2011
Evan Mills replied to ryan sentell's discussion Closed cell foam on underside of my hardwood floor?
"I'm looking at a similar project. Contractor says prevailing environmental conditions (temperature/humidity) don't matter much when it comes to application.  Seems dubious.  What's the scoop?  I would think it's…"
Mar 23, 2011
Sean Lintow Sr replied to ryan sentell's discussion Closed cell foam on underside of my hardwood floor?
"Safe - more than likely (see below) Dumb - no Other pro's - less air leakage, moisture intrusion, IAQ problems Cons - foam leaking through gaps, possible problems if floor is not equalized (humidity)   I don't see the solidifying…"
Mar 23, 2011
Jon LaMonte replied to ryan sentell's discussion Closed cell foam on underside of my hardwood floor?
"My suggestion would be to test a small area where it wouldn't be noticed (like in a closet or something) and see what happens."
Mar 23, 2011
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Mar 23, 2011
ryan sentell posted a discussion

Closed cell foam on underside of my hardwood floor?

I have white oak hardwood floors on an old 1920s house.My contractor is offering to do 2" of closed cell foam on the underside of my hardwood after he does the attic roof.I have no other sub-floor other than these tongue/groove hardwoods, so closed cell would be applied directly to it.   It is pier and beam house with about 3 feet of crawl space - in Austin TX.Is this safe?   Or is it dumb?Possible pros: "Solidify" the floor, vapor barrier, bug barrierPossible cons: damage floor?, solidifying…See More
Mar 23, 2011
ryan sentell is now a member of Home Energy Pros
Mar 23, 2011

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At 12:28pm on March 23, 2011, Diane Chojnowski said…

Hi Ryan,

Welcome to Home Energy Pros! Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos and upcoming events. If you're blogging about home performance, this is the place for you!

Don't forget to upload your profile photo. And add your location on our Member Map!


Thanks!
Diane, HEP Moderator

 
 
 

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