I am glad to see you all still talking about using Aerogel to insulate on your boats. I used it on my Roberts 58 to insulate my engine
compartment for sound and temperature (The Class A fire rating is a bonus).
As a form of disclaimer, I am the person selling the Spaceloft on eBay and I just wanted to let everyone in the community know that there is very little difference between Cryogel Z and Spaceloft 100251. I have been selling this product for a couple of years and have nearly 500,000 square feet of it.
Cryogel Z has an integral vapor barrier made of mylar and Spaceloft does not.
Cryogel Z and Spaceloft both have the same thermal conductivity of 0.12 BTU-in/hr-ft2 degrees Fahrenheit.
Spaceloft's 100251 thermal range is from minus 460 degrees Fahrenheit to plus 390 degrees Fahrenheit, but Cryogel Z only goes to plus 257 degrees Fahrenheit.
As with any manufacturer, you don't want to have just one product. So the product derived from the NASA Spin-off project
was an aerogel blanket that has amazing thermal conductive properties. So obviously Aspen Aerogels found ways to manipulate the reinforcing fibers used to comprise the blanket that would be compatible with the various temperatures they sought to create a product to serve.
Spaceloft 100251 will work perfectly for retrofitting your refrigeration
systems aboard your vessels. The data sheet from Aspen Aerogels shows the compatibility of Spaceloft with the cryogenic temperatures.
Spaceloft is currently marketed for use in construction and will even take high temperatures than Cryogel will, which makes it more adaptable for other uses.
When I insulated my engine
room and deck
plates, I encapsulated the Aerogel Spaceloft with a sheet of mylar from a roll I purchased on eBay. I used 3M spray adhesive
to attach the mylar to the Aerogel, which worked very well. Then I used aluminum
foil tape to tape around the edges.
In my application, I added the Mylar for its reflective properties not as a vapor barrier. But, it can be done this same way as a vapor barrier for refrigeration
As an experiment
I used an acetylene torch on the Spaceloft and though it scorched the material, I was still able to keep my bare hand touching the other side of the material. The side the torch was hitting reflected the heat back to my leather glove holding the torch and made the glove start to smoke.
So, I also wrapped my 4045 John Deere's exhaust
riser with the Spaceloft 100251 and aluminum tape to see if it will function under those circumstances. So, far it has. I do not recommend anyone else do this because it does fall out of the published thermal parameters of the product, but I am curious what I can use it for.
Laying multiple layers of Cryogel Z which has an integral vapor barrier all ready installed on one side is a bit unnecessary when you only need a vapor barrier on the final layer of Aerogel.
The thickness needed to attain a specific R-Value has been accurately described in previous posts.
I would also like to add that Aerogel does not support the growth of mold
Good luck to everyone and their projects. And have fun playing with Aerogel.