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
"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…"
"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…"
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…"
"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…"
"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…"
"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…"
"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…"
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
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A presentation by Greg Labbé in April 2014 on retrofitting vintage home for energy efficiency. He talked about basic building science, brick houses, movement of heat energy and moisture in and out of the house, air barrier and water barrier, house…