R21 foil insulation?
[email protected]
| Posted in General Questions on
I admit my surprise when entering GBA this afternoon and being greeted by a banner advertisement for an R21 thin foil reflective film insulation.
I went to the website, but not a lot of technical information there on why the product apparently has such extraordinary performance, as claimed of course.
GBA Detail Library
A collection of one thousand construction details organized by climate and house part
Search and download construction details
Replies
Greg,
Have you got a link to a website or a company name?
These Google display ads are always a little goofy. First of all, the ads you see are different from the ones I see. (The ads are partly based on your web surfing history. It's creepy.)
The other funny thing about Google ads is that, when I write a blog that says, "Product X is worthless and the people who sell it are crooks!," there is a pretty good chance that you will see a Google ad for Product X the next time you visit the page.
Martin,
Unfortunately since I didn't take the ad seriously I didn't pay much attention to the company name.
I visited the web site just to see what they had to say....typically they didn't say anything worth noting.
I didn't realize that the ads were partly aimed at me specifically based on my surfing habits. I thought it was just a random Google ad that really landed on the wrong website and I assumed that others would be seeing it as well.
The obvious irony was just too good to pass up.
Thanks for the reply and explanation.
Greg, I got a laugh at that ad too
Well i must be lucky, because i only get adds with lightly covered ....
:p
Seriously, I get 90% of time CNC related ads, so i can confirm how scary google is.
Martin,
It was back this morning.
http://www.fifoil.com/hyfi-insulation/?gclid=CKv58rncwb0CFbFFMgodACoAcw
Hy-Fi Insulation System
AJ, my first thought when I saw it was WTH?? Then I laughed and said "gotta check this one out".
Jin, it is a bit disconcerting for sure to be specifically targeted for ads.
Low-Cost Hybrid Insulation Designed for High Performance Wall Systems
So the explanation is that most of the R-value comes from spray foam or fiberglass batts (not included).
Some of the R-value comes from air spaces -- but how are those air spaces (created by the perfectly parallel sheets of radiant barrier foil shown in the illustration) maintained over many years, without the foil warping?