Pretty good deal on ProDex Total Insulation

[loess]

I don't have any personal experience with this company, but was looking through posts about insulation over at the old forum and found this:

[dead link]

I checked out their website and it turns out they are having a buy-one-get-one-free sale right now that ends today (4/24):

http://www.insulation4less.com/Insulation4lessBestDeals.aspx

The smallest quantity that you can order is the 4 ft x 50 ft roll:

http://www.insulation4less.com/Insulation4lessProduct-20-Prodex-Total-4-ft-x-50-ft.aspx

Which with the buy one get one free deal gives you 100 feet. With shipping that comes out to about $155 (~$1.50/foot). Way more material than I am going to need for my Toyota Previa but figured I would share the link. I wouldn't mind teaming up on an order though...

 

[loess]

Oops, I did a little more digging on this stuff. That high R-value is actually quite misleading, as Willy pointed out a while back:

https://vanlivingforum.com/Thread-Insulation--2278?pid=30855#pid30855

See also here:

http://www.garagejournal.com/forum/showthread.php?t=57607

Anyway I imagine this material would be suitable for insulating a vehicle, but certainly not worthy of the price tag, even at buy one get one free.

 

[WheelEstate USA]

Retail locally is more for 48".
We use it in our RV windows and works well.

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That was left rather open ended...sorry.

There are better insulation for walls/ceiling dependent on your needs and local.
As you've noted R factor varies, but that factor in based on how and where its installed per the mfgr specs.