Aimrehtopyh, me too, I agree. There is official 3rd party official lab testing for the corrosion prevention, mold prevention, and lead encapsulation abilities of the product. Per the company itself, one of the major challenges they face is the "too good to be true" factor. This is due to how well the product works - folks often don't believe it until they try it (me included - hence my confidence now).
But, they are light on official "lab" testing for the thermal insulation. Unless the thermal insulating characteristics specified in the patent itself are of interest to you (let me know, I can give you the link to the patent).
Please see page 10 & page 23 in this document for actual letters from real industrial clients, especially the one regarding using Nansulate as insulation for medical devices by Edward Moore.
They are a 3rd party, and the testing was specific and very controlled. There are more letters than just the two on page 10 & 23, but in my opinion those are two of the better ones.
http://industrial-nanotech.com/pdf/INI_CaseStudies.pdf
Corrosion Prevention Testing Data, 3rd Party:
http://www.nansulate.com/corrosion_prevention_data.htm
Mold Resistance Testing Data, 3rd Party:
http://www.nansulate.com/mold_resistance_data.htm
Lead Encapsulation Testing Data, 3rd Party:
http://www.nansulate.com/lead_encapsulation_data.htm
The thermal insulation testing data is 3rd party, but not "official" (as in, not from a lab that I'm aware of). The new epoxy (EPX) product is in process now being tested by a 3rd party lab for R value, FYI, from what I understand.
How many square feet is your metal roof? The only trouble is only in painting it, not in the cure time of course. Whether it's worth it depends on what the situation is with the rest of the structure. If it's poorly insulated, then coating the roof will help but not a lot. You'd need to also coat the walls inside which abut the exterior for the thermal barrier to be highly impactful (basically, as a complete thermal envelope). If the rest of the structure is very well insulate, but the roof is not, then just coating the metal roof may be very beneficial. Anyway, if the rest of the structure isn't insulated well, and you only aim to coat the roof itself... I wouldn't spend the $. It should help, but the heat would transfer out the rest of the structure if it couldn't go upwards anymore.
p.s. To Dezakin... no need for the childish uninformed insults. This is a product discussion, ONLY. Stick to product discussion here - this is not an investment thread. I challenge you or anyone to try this product - I have, and it works. No ifs, ands, or buts, it works. You've seen my offer of risk-free trial, but instead you sling uninformed insults (that's odd, huh?). First, you need to read some of the industrial energy savings case studies, and letters from industrial clients about the savings they achieved via Nansulate application, then call all of them liars if you wish.